[clang] 61ae2db - [analyzer] Adjust the reported variable name in retain count checker
Valeriy Savchenko via cfe-commits
cfe-commits at lists.llvm.org
Wed Apr 28 08:38:15 PDT 2021
Author: Valeriy Savchenko
Date: 2021-04-28T18:37:37+03:00
New Revision: 61ae2db2d7a97af5206afe609a303071711f9e6e
URL: https://github.com/llvm/llvm-project/commit/61ae2db2d7a97af5206afe609a303071711f9e6e
DIFF: https://github.com/llvm/llvm-project/commit/61ae2db2d7a97af5206afe609a303071711f9e6e.diff
LOG: [analyzer] Adjust the reported variable name in retain count checker
When reporting leaks, we try to attach the leaking object to some
variable, so it's easier to understand. Before the patch, we always
tried to use the first variable that stored the object in question.
This can get very confusing for the user, if that variable doesn't
contain that object at the moment of the actual leak. In many cases,
the warning is dismissed as false positive and it is effectively a
false positive when we fail to properly explain the warning to the
user.
This patch addresses the bigest issue in cases like this. Now we
check if the variable still contains the leaking symbolic object.
If not, we look for the last variable to actually hold it and use
that variable instead.
rdar://76645710
Differential Revision: https://reviews.llvm.org/D100839
Added:
Modified:
clang/lib/StaticAnalyzer/Checkers/RetainCountChecker/RetainCountDiagnostics.cpp
clang/lib/StaticAnalyzer/Checkers/RetainCountChecker/RetainCountDiagnostics.h
clang/test/Analysis/Inputs/expected-plists/edges-new.mm.plist
clang/test/Analysis/Inputs/expected-plists/retain-release-path-notes.m.plist
clang/test/Analysis/Inputs/expected-plists/retain-release.m.objc.plist
clang/test/Analysis/Inputs/expected-plists/retain-release.m.objcpp.plist
clang/test/Analysis/osobject-retain-release.cpp
clang/test/Analysis/retain-release-path-notes.m
clang/test/Analysis/retain-release.m
Removed:
################################################################################
diff --git a/clang/lib/StaticAnalyzer/Checkers/RetainCountChecker/RetainCountDiagnostics.cpp b/clang/lib/StaticAnalyzer/Checkers/RetainCountChecker/RetainCountDiagnostics.cpp
index a004d78bfe397..48b5f8d9ba7c9 100644
--- a/clang/lib/StaticAnalyzer/Checkers/RetainCountChecker/RetainCountDiagnostics.cpp
+++ b/clang/lib/StaticAnalyzer/Checkers/RetainCountChecker/RetainCountDiagnostics.cpp
@@ -13,6 +13,8 @@
#include "RetainCountDiagnostics.h"
#include "RetainCountChecker.h"
+#include "llvm/ADT/STLExtras.h"
+#include "llvm/ADT/SmallVector.h"
using namespace clang;
using namespace ento;
@@ -337,15 +339,15 @@ class RefCountReportVisitor : public BugReporterVisitor {
class RefLeakReportVisitor : public RefCountReportVisitor {
public:
- RefLeakReportVisitor(SymbolRef Sym, const MemRegion *FirstBinding)
- : RefCountReportVisitor(Sym), FirstBinding(FirstBinding) {}
+ RefLeakReportVisitor(SymbolRef Sym, const MemRegion *LastBinding)
+ : RefCountReportVisitor(Sym), LastBinding(LastBinding) {}
PathDiagnosticPieceRef getEndPath(BugReporterContext &BRC,
const ExplodedNode *N,
PathSensitiveBugReport &BR) override;
private:
- const MemRegion *FirstBinding;
+ const MemRegion *LastBinding;
};
} // end namespace retaincountchecker
@@ -614,6 +616,41 @@ static Optional<std::string> describeRegion(const MemRegion *MR) {
return None;
}
+using Bindings = llvm::SmallVector<const MemRegion *, 4>;
+
+class VarBindingsCollector : public StoreManager::BindingsHandler {
+ SymbolRef Sym;
+ Bindings &Result;
+
+public:
+ VarBindingsCollector(SymbolRef Sym, Bindings &ToFill)
+ : Sym(Sym), Result(ToFill) {}
+
+ bool HandleBinding(StoreManager &SMgr, Store Store, const MemRegion *R,
+ SVal Val) override {
+ SymbolRef SymV = Val.getAsLocSymbol();
+ if (!SymV || SymV != Sym)
+ return true;
+
+ if (isa<NonParamVarRegion>(R))
+ Result.push_back(R);
+
+ return true;
+ }
+};
+
+Bindings getAllVarBindingsForSymbol(ProgramStateManager &Manager,
+ const ExplodedNode *Node, SymbolRef Sym) {
+ Bindings Result;
+ VarBindingsCollector Collector{Sym, Result};
+ while (Result.empty() && Node) {
+ Manager.iterBindings(Node->getState(), Collector);
+ Node = Node->getFirstPred();
+ }
+
+ return Result;
+}
+
namespace {
// Find the first node in the current function context that referred to the
// tracked symbol and the memory location that value was stored to. Note, the
@@ -740,7 +777,7 @@ RefLeakReportVisitor::getEndPath(BugReporterContext &BRC,
os << "Object leaked: ";
- Optional<std::string> RegionDescription = describeRegion(FirstBinding);
+ Optional<std::string> RegionDescription = describeRegion(LastBinding);
if (RegionDescription) {
os << "object allocated and stored into '" << *RegionDescription << '\'';
} else {
@@ -749,7 +786,7 @@ RefLeakReportVisitor::getEndPath(BugReporterContext &BRC,
}
// Get the retain count.
- const RefVal* RV = getRefBinding(EndN->getState(), Sym);
+ const RefVal *RV = getRefBinding(EndN->getState(), Sym);
assert(RV);
if (RV->getKind() == RefVal::ErrorLeakReturned) {
@@ -790,14 +827,15 @@ RefLeakReportVisitor::getEndPath(BugReporterContext &BRC,
" Foundation";
} else if (RV->getObjKind() == ObjKind::OS) {
std::string FuncName = FD->getNameAsString();
- os << "whose name ('" << FuncName
- << "') starts with '" << StringRef(FuncName).substr(0, 3) << "'";
+ os << "whose name ('" << FuncName << "') starts with '"
+ << StringRef(FuncName).substr(0, 3) << "'";
}
}
}
} else {
os << " is not referenced later in this execution path and has a retain "
- "count of +" << RV->getCount();
+ "count of +"
+ << RV->getCount();
}
return std::make_shared<PathDiagnosticEventPiece>(L, os.str());
@@ -819,16 +857,16 @@ RefCountReport::RefCountReport(const RefCountBug &D, const LangOptions &LOpts,
addVisitor(std::make_unique<RefCountReportVisitor>(sym));
}
-void RefLeakReport::deriveParamLocation(CheckerContext &Ctx, SymbolRef sym) {
- const SourceManager& SMgr = Ctx.getSourceManager();
+void RefLeakReport::deriveParamLocation(CheckerContext &Ctx) {
+ const SourceManager &SMgr = Ctx.getSourceManager();
- if (!sym->getOriginRegion())
+ if (!Sym->getOriginRegion())
return;
- auto *Region = dyn_cast<DeclRegion>(sym->getOriginRegion());
+ auto *Region = dyn_cast<DeclRegion>(Sym->getOriginRegion());
if (Region) {
const Decl *PDecl = Region->getDecl();
- if (PDecl && isa<ParmVarDecl>(PDecl)) {
+ if (isa_and_nonnull<ParmVarDecl>(PDecl)) {
PathDiagnosticLocation ParamLocation =
PathDiagnosticLocation::create(PDecl, SMgr);
Location = ParamLocation;
@@ -838,8 +876,7 @@ void RefLeakReport::deriveParamLocation(CheckerContext &Ctx, SymbolRef sym) {
}
}
-void RefLeakReport::deriveAllocLocation(CheckerContext &Ctx,
- SymbolRef sym) {
+void RefLeakReport::deriveAllocLocation(CheckerContext &Ctx) {
// Most bug reports are cached at the location where they occurred.
// With leaks, we want to unique them by the location where they were
// allocated, and only report a single path. To do this, we need to find
@@ -850,13 +887,13 @@ void RefLeakReport::deriveAllocLocation(CheckerContext &Ctx,
// same SourceLocation.
const ExplodedNode *AllocNode = nullptr;
- const SourceManager& SMgr = Ctx.getSourceManager();
+ const SourceManager &SMgr = Ctx.getSourceManager();
AllocationInfo AllocI =
- GetAllocationSite(Ctx.getStateManager(), getErrorNode(), sym);
+ GetAllocationSite(Ctx.getStateManager(), getErrorNode(), Sym);
AllocNode = AllocI.N;
- AllocBinding = AllocI.R;
+ AllocFirstBinding = AllocI.R;
markInteresting(AllocI.InterestingMethodContext);
// Get the SourceLocation for the allocation site.
@@ -866,13 +903,12 @@ void RefLeakReport::deriveAllocLocation(CheckerContext &Ctx,
AllocStmt = AllocNode->getStmtForDiagnostics();
if (!AllocStmt) {
- AllocBinding = nullptr;
+ AllocFirstBinding = nullptr;
return;
}
- PathDiagnosticLocation AllocLocation =
- PathDiagnosticLocation::createBegin(AllocStmt, SMgr,
- AllocNode->getLocationContext());
+ PathDiagnosticLocation AllocLocation = PathDiagnosticLocation::createBegin(
+ AllocStmt, SMgr, AllocNode->getLocationContext());
Location = AllocLocation;
// Set uniqieing info, which will be used for unique the bug reports. The
@@ -887,7 +923,8 @@ void RefLeakReport::createDescription(CheckerContext &Ctx) {
llvm::raw_string_ostream os(Description);
os << "Potential leak of an object";
- Optional<std::string> RegionDescription = describeRegion(AllocBinding);
+ Optional<std::string> RegionDescription =
+ describeRegion(AllocBindingToReport);
if (RegionDescription) {
os << " stored into '" << *RegionDescription << '\'';
} else {
@@ -897,16 +934,59 @@ void RefLeakReport::createDescription(CheckerContext &Ctx) {
}
}
+void RefLeakReport::findBindingToReport(CheckerContext &Ctx,
+ ExplodedNode *Node) {
+ if (!AllocFirstBinding)
+ // If we don't have any bindings, we won't be able to find any
+ // better binding to report.
+ return;
+
+ // If the original region still contains the leaking symbol...
+ if (Node->getState()->getSVal(AllocFirstBinding).getAsSymbol() == Sym) {
+ // ...it is the best binding to report.
+ AllocBindingToReport = AllocFirstBinding;
+ return;
+ }
+
+ // At this point, we know that the original region doesn't contain the leaking
+ // when the actual leak happens. It means that it can be confusing for the
+ // user to see such description in the message.
+ //
+ // Let's consider the following example:
+ // Object *Original = allocate(...);
+ // Object *New = Original;
+ // Original = allocate(...);
+ // Original->release();
+ //
+ // Complaining about a leaking object "stored into Original" might cause a
+ // rightful confusion because 'Original' is actually released.
+ // We should complain about 'New' instead.
+ Bindings AllVarBindings =
+ getAllVarBindingsForSymbol(Ctx.getStateManager(), Node, Sym);
+
+ // While looking for the last var bindings, we can still find
+ // `AllocFirstBinding` to be one of them. In situations like this,
+ // it would still be the easiest case to explain to our users.
+ if (!AllVarBindings.empty() &&
+ llvm::count(AllVarBindings, AllocFirstBinding) == 0)
+ // Let's pick one of them at random (if there is something to pick from).
+ AllocBindingToReport = AllVarBindings[0];
+ else
+ AllocBindingToReport = AllocFirstBinding;
+}
+
RefLeakReport::RefLeakReport(const RefCountBug &D, const LangOptions &LOpts,
ExplodedNode *N, SymbolRef Sym,
CheckerContext &Ctx)
: RefCountReport(D, LOpts, N, Sym, /*isLeak=*/true) {
- deriveAllocLocation(Ctx, Sym);
- if (!AllocBinding)
- deriveParamLocation(Ctx, Sym);
+ deriveAllocLocation(Ctx);
+ findBindingToReport(Ctx, N);
+
+ if (!AllocFirstBinding)
+ deriveParamLocation(Ctx);
createDescription(Ctx);
- addVisitor(std::make_unique<RefLeakReportVisitor>(Sym, AllocBinding));
+ addVisitor(std::make_unique<RefLeakReportVisitor>(Sym, AllocBindingToReport));
}
diff --git a/clang/lib/StaticAnalyzer/Checkers/RetainCountChecker/RetainCountDiagnostics.h b/clang/lib/StaticAnalyzer/Checkers/RetainCountChecker/RetainCountDiagnostics.h
index 286a8ae2ef7d7..d05900895c6a6 100644
--- a/clang/lib/StaticAnalyzer/Checkers/RetainCountChecker/RetainCountDiagnostics.h
+++ b/clang/lib/StaticAnalyzer/Checkers/RetainCountChecker/RetainCountDiagnostics.h
@@ -68,17 +68,20 @@ class RefCountReport : public PathSensitiveBugReport {
};
class RefLeakReport : public RefCountReport {
- const MemRegion* AllocBinding;
- const Stmt *AllocStmt;
+ const MemRegion *AllocFirstBinding = nullptr;
+ const MemRegion *AllocBindingToReport = nullptr;
+ const Stmt *AllocStmt = nullptr;
PathDiagnosticLocation Location;
// Finds the function declaration where a leak warning for the parameter
// 'sym' should be raised.
- void deriveParamLocation(CheckerContext &Ctx, SymbolRef sym);
- // Finds the location where a leak warning for 'sym' should be raised.
- void deriveAllocLocation(CheckerContext &Ctx, SymbolRef sym);
+ void deriveParamLocation(CheckerContext &Ctx);
+ // Finds the location where the leaking object is allocated.
+ void deriveAllocLocation(CheckerContext &Ctx);
// Produces description of a leak warning which is printed on the console.
void createDescription(CheckerContext &Ctx);
+ // Finds the binding that we should use in a leak warning.
+ void findBindingToReport(CheckerContext &Ctx, ExplodedNode *Node);
public:
RefLeakReport(const RefCountBug &D, const LangOptions &LOpts, ExplodedNode *n,
diff --git a/clang/test/Analysis/Inputs/expected-plists/edges-new.mm.plist b/clang/test/Analysis/Inputs/expected-plists/edges-new.mm.plist
index 1d82f3cd84242..0665e976efe9d 100644
--- a/clang/test/Analysis/Inputs/expected-plists/edges-new.mm.plist
+++ b/clang/test/Analysis/Inputs/expected-plists/edges-new.mm.plist
@@ -21946,12 +21946,12 @@
</dict>
<key>depth</key><integer>0</integer>
<key>extended_message</key>
- <string>Object leaked: object allocated and stored into 'foo' is not referenced later in this execution path and has a retain count of +1</string>
+ <string>Object leaked: object allocated and stored into 'garply' is not referenced later in this execution path and has a retain count of +1</string>
<key>message</key>
- <string>Object leaked: object allocated and stored into 'foo' is not referenced later in this execution path and has a retain count of +1</string>
+ <string>Object leaked: object allocated and stored into 'garply' is not referenced later in this execution path and has a retain count of +1</string>
</dict>
</array>
- <key>description</key><string>Potential leak of an object stored into 'foo'</string>
+ <key>description</key><string>Potential leak of an object stored into 'garply'</string>
<key>category</key><string>Memory (Core Foundation/Objective-C/OSObject)</string>
<key>type</key><string>Leak</string>
<key>check_name</key><string>osx.cocoa.RetainCount</string>
diff --git a/clang/test/Analysis/Inputs/expected-plists/retain-release-path-notes.m.plist b/clang/test/Analysis/Inputs/expected-plists/retain-release-path-notes.m.plist
index 71ccd79bf3a7b..185525c3a8473 100644
--- a/clang/test/Analysis/Inputs/expected-plists/retain-release-path-notes.m.plist
+++ b/clang/test/Analysis/Inputs/expected-plists/retain-release-path-notes.m.plist
@@ -5012,6 +5012,1834 @@
</array>
</dict>
</dict>
+ <dict>
+ <key>path</key>
+ <array>
+ <dict>
+ <key>kind</key><string>control</string>
+ <key>edges</key>
+ <array>
+ <dict>
+ <key>start</key>
+ <array>
+ <dict>
+ <key>line</key><integer>337</integer>
+ <key>col</key><integer>3</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>337</integer>
+ <key>col</key><integer>4</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ <key>end</key>
+ <array>
+ <dict>
+ <key>line</key><integer>337</integer>
+ <key>col</key><integer>17</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>337</integer>
+ <key>col</key><integer>17</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ </dict>
+ </array>
+ </dict>
+ <dict>
+ <key>kind</key><string>event</string>
+ <key>location</key>
+ <dict>
+ <key>line</key><integer>337</integer>
+ <key>col</key><integer>17</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <key>ranges</key>
+ <array>
+ <array>
+ <dict>
+ <key>line</key><integer>337</integer>
+ <key>col</key><integer>17</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>337</integer>
+ <key>col</key><integer>37</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ </array>
+ <key>depth</key><integer>0</integer>
+ <key>extended_message</key>
+ <string>Calling 'initY'</string>
+ <key>message</key>
+ <string>Calling 'initY'</string>
+ </dict>
+ <dict>
+ <key>kind</key><string>event</string>
+ <key>location</key>
+ <dict>
+ <key>line</key><integer>214</integer>
+ <key>col</key><integer>1</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <key>depth</key><integer>1</integer>
+ <key>extended_message</key>
+ <string>Entered call from 'testLeakAliasSimple'</string>
+ <key>message</key>
+ <string>Entered call from 'testLeakAliasSimple'</string>
+ </dict>
+ <dict>
+ <key>kind</key><string>control</string>
+ <key>edges</key>
+ <array>
+ <dict>
+ <key>start</key>
+ <array>
+ <dict>
+ <key>line</key><integer>214</integer>
+ <key>col</key><integer>1</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>214</integer>
+ <key>col</key><integer>1</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ <key>end</key>
+ <array>
+ <dict>
+ <key>line</key><integer>215</integer>
+ <key>col</key><integer>3</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>215</integer>
+ <key>col</key><integer>6</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ </dict>
+ </array>
+ </dict>
+ <dict>
+ <key>kind</key><string>event</string>
+ <key>location</key>
+ <dict>
+ <key>line</key><integer>215</integer>
+ <key>col</key><integer>10</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <key>ranges</key>
+ <array>
+ <array>
+ <dict>
+ <key>line</key><integer>215</integer>
+ <key>col</key><integer>10</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>215</integer>
+ <key>col</key><integer>21</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ </array>
+ <key>depth</key><integer>1</integer>
+ <key>extended_message</key>
+ <string>Method returns an instance of MyObj with a +1 retain count</string>
+ <key>message</key>
+ <string>Method returns an instance of MyObj with a +1 retain count</string>
+ </dict>
+ <dict>
+ <key>kind</key><string>control</string>
+ <key>edges</key>
+ <array>
+ <dict>
+ <key>start</key>
+ <array>
+ <dict>
+ <key>line</key><integer>215</integer>
+ <key>col</key><integer>3</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>215</integer>
+ <key>col</key><integer>6</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ <key>end</key>
+ <array>
+ <dict>
+ <key>line</key><integer>216</integer>
+ <key>col</key><integer>3</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>216</integer>
+ <key>col</key><integer>8</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ </dict>
+ </array>
+ </dict>
+ <dict>
+ <key>kind</key><string>event</string>
+ <key>location</key>
+ <dict>
+ <key>line</key><integer>337</integer>
+ <key>col</key><integer>17</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <key>ranges</key>
+ <array>
+ <array>
+ <dict>
+ <key>line</key><integer>337</integer>
+ <key>col</key><integer>17</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>337</integer>
+ <key>col</key><integer>37</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ </array>
+ <key>depth</key><integer>0</integer>
+ <key>extended_message</key>
+ <string>Returning from 'initY'</string>
+ <key>message</key>
+ <string>Returning from 'initY'</string>
+ </dict>
+ <dict>
+ <key>kind</key><string>control</string>
+ <key>edges</key>
+ <array>
+ <dict>
+ <key>start</key>
+ <array>
+ <dict>
+ <key>line</key><integer>337</integer>
+ <key>col</key><integer>17</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>337</integer>
+ <key>col</key><integer>17</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ <key>end</key>
+ <array>
+ <dict>
+ <key>line</key><integer>337</integer>
+ <key>col</key><integer>3</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>337</integer>
+ <key>col</key><integer>4</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ </dict>
+ </array>
+ </dict>
+ <dict>
+ <key>kind</key><string>control</string>
+ <key>edges</key>
+ <array>
+ <dict>
+ <key>start</key>
+ <array>
+ <dict>
+ <key>line</key><integer>337</integer>
+ <key>col</key><integer>3</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>337</integer>
+ <key>col</key><integer>4</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ <key>end</key>
+ <array>
+ <dict>
+ <key>line</key><integer>342</integer>
+ <key>col</key><integer>3</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>342</integer>
+ <key>col</key><integer>3</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ </dict>
+ </array>
+ </dict>
+ <dict>
+ <key>kind</key><string>event</string>
+ <key>location</key>
+ <dict>
+ <key>line</key><integer>342</integer>
+ <key>col</key><integer>3</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <key>ranges</key>
+ <array>
+ <array>
+ <dict>
+ <key>line</key><integer>342</integer>
+ <key>col</key><integer>3</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>342</integer>
+ <key>col</key><integer>20</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ </array>
+ <key>depth</key><integer>0</integer>
+ <key>extended_message</key>
+ <string>Object leaked: object allocated and stored into 'New' is not referenced later in this execution path and has a retain count of +1</string>
+ <key>message</key>
+ <string>Object leaked: object allocated and stored into 'New' is not referenced later in this execution path and has a retain count of +1</string>
+ </dict>
+ </array>
+ <key>description</key><string>Potential leak of an object stored into 'New'</string>
+ <key>category</key><string>Memory (Core Foundation/Objective-C/OSObject)</string>
+ <key>type</key><string>Leak</string>
+ <key>check_name</key><string>osx.cocoa.RetainCount</string>
+ <!-- This hash is experimental and going to change! -->
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+ <dict>
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+ </dict>
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+ </dict>
+ <dict>
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+ <string>Object leaked: object allocated and stored into 'New' is not referenced later in this execution path and has a retain count of +1</string>
+ <key>message</key>
+ <string>Object leaked: object allocated and stored into 'New' is not referenced later in this execution path and has a retain count of +1</string>
+ </dict>
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+ <key>type</key><string>Leak</string>
+ <key>check_name</key><string>osx.cocoa.RetainCount</string>
+ <!-- This hash is experimental and going to change! -->
+ <key>issue_hash_content_of_line_in_context</key><string>076457f7cf482449386f129554f48f68</string>
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+ </dict>
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+ </dict>
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+ <key>file</key><integer>0</integer>
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+ <key>file</key><integer>0</integer>
+ </dict>
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+ <key>extended_message</key>
+ <string>Object leaked: object allocated and stored into 'New' is not referenced later in this execution path and has a retain count of +1</string>
+ <key>message</key>
+ <string>Object leaked: object allocated and stored into 'New' is not referenced later in this execution path and has a retain count of +1</string>
+ </dict>
+ </array>
+ <key>description</key><string>Potential leak of an object stored into 'New'</string>
+ <key>category</key><string>Memory (Core Foundation/Objective-C/OSObject)</string>
+ <key>type</key><string>Leak</string>
+ <key>check_name</key><string>osx.cocoa.RetainCount</string>
+ <!-- This hash is experimental and going to change! -->
+ <key>issue_hash_content_of_line_in_context</key><string>1ead75ff85eb09fa93374d0083f531e5</string>
+ <key>issue_context_kind</key><string>Objective-C method</string>
+ <key>issue_context</key><string>testLeakAliasDeathInExpr</string>
+ <key>issue_hash_function_offset</key><string>1</string>
+ <key>location</key>
+ <dict>
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+ <key>col</key><integer>3</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <key>ExecutedLines</key>
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+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ <key>end</key>
+ <array>
+ <dict>
+ <key>line</key><integer>381</integer>
+ <key>col</key><integer>17</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>381</integer>
+ <key>col</key><integer>17</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ </dict>
+ </array>
+ </dict>
+ <dict>
+ <key>kind</key><string>event</string>
+ <key>location</key>
+ <dict>
+ <key>line</key><integer>381</integer>
+ <key>col</key><integer>17</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <key>ranges</key>
+ <array>
+ <array>
+ <dict>
+ <key>line</key><integer>381</integer>
+ <key>col</key><integer>17</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>381</integer>
+ <key>col</key><integer>37</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ </array>
+ <key>depth</key><integer>0</integer>
+ <key>extended_message</key>
+ <string>Calling 'initY'</string>
+ <key>message</key>
+ <string>Calling 'initY'</string>
+ </dict>
+ <dict>
+ <key>kind</key><string>event</string>
+ <key>location</key>
+ <dict>
+ <key>line</key><integer>214</integer>
+ <key>col</key><integer>1</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <key>depth</key><integer>1</integer>
+ <key>extended_message</key>
+ <string>Entered call from 'testLeakReassign'</string>
+ <key>message</key>
+ <string>Entered call from 'testLeakReassign'</string>
+ </dict>
+ <dict>
+ <key>kind</key><string>control</string>
+ <key>edges</key>
+ <array>
+ <dict>
+ <key>start</key>
+ <array>
+ <dict>
+ <key>line</key><integer>214</integer>
+ <key>col</key><integer>1</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>214</integer>
+ <key>col</key><integer>1</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ <key>end</key>
+ <array>
+ <dict>
+ <key>line</key><integer>215</integer>
+ <key>col</key><integer>3</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>215</integer>
+ <key>col</key><integer>6</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ </dict>
+ </array>
+ </dict>
+ <dict>
+ <key>kind</key><string>event</string>
+ <key>location</key>
+ <dict>
+ <key>line</key><integer>215</integer>
+ <key>col</key><integer>10</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <key>ranges</key>
+ <array>
+ <array>
+ <dict>
+ <key>line</key><integer>215</integer>
+ <key>col</key><integer>10</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>215</integer>
+ <key>col</key><integer>21</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ </array>
+ <key>depth</key><integer>1</integer>
+ <key>extended_message</key>
+ <string>Method returns an instance of MyObj with a +1 retain count</string>
+ <key>message</key>
+ <string>Method returns an instance of MyObj with a +1 retain count</string>
+ </dict>
+ <dict>
+ <key>kind</key><string>control</string>
+ <key>edges</key>
+ <array>
+ <dict>
+ <key>start</key>
+ <array>
+ <dict>
+ <key>line</key><integer>215</integer>
+ <key>col</key><integer>3</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>215</integer>
+ <key>col</key><integer>6</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ <key>end</key>
+ <array>
+ <dict>
+ <key>line</key><integer>216</integer>
+ <key>col</key><integer>3</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>216</integer>
+ <key>col</key><integer>8</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ </dict>
+ </array>
+ </dict>
+ <dict>
+ <key>kind</key><string>event</string>
+ <key>location</key>
+ <dict>
+ <key>line</key><integer>381</integer>
+ <key>col</key><integer>17</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <key>ranges</key>
+ <array>
+ <array>
+ <dict>
+ <key>line</key><integer>381</integer>
+ <key>col</key><integer>17</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>381</integer>
+ <key>col</key><integer>37</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ </array>
+ <key>depth</key><integer>0</integer>
+ <key>extended_message</key>
+ <string>Returning from 'initY'</string>
+ <key>message</key>
+ <string>Returning from 'initY'</string>
+ </dict>
+ <dict>
+ <key>kind</key><string>control</string>
+ <key>edges</key>
+ <array>
+ <dict>
+ <key>start</key>
+ <array>
+ <dict>
+ <key>line</key><integer>381</integer>
+ <key>col</key><integer>17</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>381</integer>
+ <key>col</key><integer>17</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ <key>end</key>
+ <array>
+ <dict>
+ <key>line</key><integer>381</integer>
+ <key>col</key><integer>3</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>381</integer>
+ <key>col</key><integer>4</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ </dict>
+ </array>
+ </dict>
+ <dict>
+ <key>kind</key><string>control</string>
+ <key>edges</key>
+ <array>
+ <dict>
+ <key>start</key>
+ <array>
+ <dict>
+ <key>line</key><integer>381</integer>
+ <key>col</key><integer>3</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>381</integer>
+ <key>col</key><integer>4</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ <key>end</key>
+ <array>
+ <dict>
+ <key>line</key><integer>385</integer>
+ <key>col</key><integer>3</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>385</integer>
+ <key>col</key><integer>3</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ </dict>
+ </array>
+ </dict>
+ <dict>
+ <key>kind</key><string>event</string>
+ <key>location</key>
+ <dict>
+ <key>line</key><integer>385</integer>
+ <key>col</key><integer>3</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <key>ranges</key>
+ <array>
+ <array>
+ <dict>
+ <key>line</key><integer>385</integer>
+ <key>col</key><integer>3</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>385</integer>
+ <key>col</key><integer>20</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ </array>
+ <key>depth</key><integer>0</integer>
+ <key>extended_message</key>
+ <string>Object leaked: object allocated and stored into 'Original' is not referenced later in this execution path and has a retain count of +1</string>
+ <key>message</key>
+ <string>Object leaked: object allocated and stored into 'Original' is not referenced later in this execution path and has a retain count of +1</string>
+ </dict>
+ </array>
+ <key>description</key><string>Potential leak of an object stored into 'Original'</string>
+ <key>category</key><string>Memory (Core Foundation/Objective-C/OSObject)</string>
+ <key>type</key><string>Leak</string>
+ <key>check_name</key><string>osx.cocoa.RetainCount</string>
+ <!-- This hash is experimental and going to change! -->
+ <key>issue_hash_content_of_line_in_context</key><string>b258720b6e75b13188d9d8f67a8c328f</string>
+ <key>issue_context_kind</key><string>Objective-C method</string>
+ <key>issue_context</key><string>testLeakReassign</string>
+ <key>issue_hash_function_offset</key><string>1</string>
+ <key>location</key>
+ <dict>
+ <key>line</key><integer>385</integer>
+ <key>col</key><integer>3</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <key>ExecutedLines</key>
+ <dict>
+ <key>0</key>
+ <array>
+ <integer>214</integer>
+ <integer>215</integer>
+ <integer>216</integer>
+ <integer>219</integer>
+ <integer>220</integer>
+ <integer>221</integer>
+ <integer>380</integer>
+ <integer>381</integer>
+ <integer>384</integer>
+ <integer>385</integer>
+ </array>
+ </dict>
+ </dict>
+ <dict>
+ <key>path</key>
+ <array>
+ <dict>
+ <key>kind</key><string>control</string>
+ <key>edges</key>
+ <array>
+ <dict>
+ <key>start</key>
+ <array>
+ <dict>
+ <key>line</key><integer>390</integer>
+ <key>col</key><integer>3</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>390</integer>
+ <key>col</key><integer>4</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ <key>end</key>
+ <array>
+ <dict>
+ <key>line</key><integer>390</integer>
+ <key>col</key><integer>17</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>390</integer>
+ <key>col</key><integer>17</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ </dict>
+ </array>
+ </dict>
+ <dict>
+ <key>kind</key><string>event</string>
+ <key>location</key>
+ <dict>
+ <key>line</key><integer>390</integer>
+ <key>col</key><integer>17</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <key>ranges</key>
+ <array>
+ <array>
+ <dict>
+ <key>line</key><integer>390</integer>
+ <key>col</key><integer>17</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>390</integer>
+ <key>col</key><integer>37</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ </array>
+ <key>depth</key><integer>0</integer>
+ <key>extended_message</key>
+ <string>Calling 'initY'</string>
+ <key>message</key>
+ <string>Calling 'initY'</string>
+ </dict>
+ <dict>
+ <key>kind</key><string>event</string>
+ <key>location</key>
+ <dict>
+ <key>line</key><integer>214</integer>
+ <key>col</key><integer>1</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <key>depth</key><integer>1</integer>
+ <key>extended_message</key>
+ <string>Entered call from 'testLeakReassign:'</string>
+ <key>message</key>
+ <string>Entered call from 'testLeakReassign:'</string>
+ </dict>
+ <dict>
+ <key>kind</key><string>control</string>
+ <key>edges</key>
+ <array>
+ <dict>
+ <key>start</key>
+ <array>
+ <dict>
+ <key>line</key><integer>214</integer>
+ <key>col</key><integer>1</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>214</integer>
+ <key>col</key><integer>1</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ <key>end</key>
+ <array>
+ <dict>
+ <key>line</key><integer>215</integer>
+ <key>col</key><integer>3</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>215</integer>
+ <key>col</key><integer>6</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ </dict>
+ </array>
+ </dict>
+ <dict>
+ <key>kind</key><string>event</string>
+ <key>location</key>
+ <dict>
+ <key>line</key><integer>215</integer>
+ <key>col</key><integer>10</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <key>ranges</key>
+ <array>
+ <array>
+ <dict>
+ <key>line</key><integer>215</integer>
+ <key>col</key><integer>10</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>215</integer>
+ <key>col</key><integer>21</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ </array>
+ <key>depth</key><integer>1</integer>
+ <key>extended_message</key>
+ <string>Method returns an instance of MyObj with a +1 retain count</string>
+ <key>message</key>
+ <string>Method returns an instance of MyObj with a +1 retain count</string>
+ </dict>
+ <dict>
+ <key>kind</key><string>control</string>
+ <key>edges</key>
+ <array>
+ <dict>
+ <key>start</key>
+ <array>
+ <dict>
+ <key>line</key><integer>215</integer>
+ <key>col</key><integer>3</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>215</integer>
+ <key>col</key><integer>6</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ <key>end</key>
+ <array>
+ <dict>
+ <key>line</key><integer>216</integer>
+ <key>col</key><integer>3</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>216</integer>
+ <key>col</key><integer>8</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ </dict>
+ </array>
+ </dict>
+ <dict>
+ <key>kind</key><string>event</string>
+ <key>location</key>
+ <dict>
+ <key>line</key><integer>390</integer>
+ <key>col</key><integer>17</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <key>ranges</key>
+ <array>
+ <array>
+ <dict>
+ <key>line</key><integer>390</integer>
+ <key>col</key><integer>17</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>390</integer>
+ <key>col</key><integer>37</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ </array>
+ <key>depth</key><integer>0</integer>
+ <key>extended_message</key>
+ <string>Returning from 'initY'</string>
+ <key>message</key>
+ <string>Returning from 'initY'</string>
+ </dict>
+ <dict>
+ <key>kind</key><string>control</string>
+ <key>edges</key>
+ <array>
+ <dict>
+ <key>start</key>
+ <array>
+ <dict>
+ <key>line</key><integer>390</integer>
+ <key>col</key><integer>17</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>390</integer>
+ <key>col</key><integer>17</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ <key>end</key>
+ <array>
+ <dict>
+ <key>line</key><integer>390</integer>
+ <key>col</key><integer>3</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>390</integer>
+ <key>col</key><integer>4</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ </dict>
+ </array>
+ </dict>
+ <dict>
+ <key>kind</key><string>control</string>
+ <key>edges</key>
+ <array>
+ <dict>
+ <key>start</key>
+ <array>
+ <dict>
+ <key>line</key><integer>390</integer>
+ <key>col</key><integer>3</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>390</integer>
+ <key>col</key><integer>4</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ <key>end</key>
+ <array>
+ <dict>
+ <key>line</key><integer>392</integer>
+ <key>col</key><integer>3</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>392</integer>
+ <key>col</key><integer>4</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ </dict>
+ </array>
+ </dict>
+ <dict>
+ <key>kind</key><string>control</string>
+ <key>edges</key>
+ <array>
+ <dict>
+ <key>start</key>
+ <array>
+ <dict>
+ <key>line</key><integer>392</integer>
+ <key>col</key><integer>3</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>392</integer>
+ <key>col</key><integer>4</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ <key>end</key>
+ <array>
+ <dict>
+ <key>line</key><integer>392</integer>
+ <key>col</key><integer>7</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>392</integer>
+ <key>col</key><integer>10</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ </dict>
+ </array>
+ </dict>
+ <dict>
+ <key>kind</key><string>event</string>
+ <key>location</key>
+ <dict>
+ <key>line</key><integer>392</integer>
+ <key>col</key><integer>7</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <key>ranges</key>
+ <array>
+ <array>
+ <dict>
+ <key>line</key><integer>392</integer>
+ <key>col</key><integer>7</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>392</integer>
+ <key>col</key><integer>10</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ </array>
+ <key>depth</key><integer>0</integer>
+ <key>extended_message</key>
+ <string>Assuming 'cond' is not equal to 0</string>
+ <key>message</key>
+ <string>Assuming 'cond' is not equal to 0</string>
+ </dict>
+ <dict>
+ <key>kind</key><string>control</string>
+ <key>edges</key>
+ <array>
+ <dict>
+ <key>start</key>
+ <array>
+ <dict>
+ <key>line</key><integer>392</integer>
+ <key>col</key><integer>7</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>392</integer>
+ <key>col</key><integer>10</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ <key>end</key>
+ <array>
+ <dict>
+ <key>line</key><integer>395</integer>
+ <key>col</key><integer>5</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>395</integer>
+ <key>col</key><integer>12</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ </dict>
+ </array>
+ </dict>
+ <dict>
+ <key>kind</key><string>control</string>
+ <key>edges</key>
+ <array>
+ <dict>
+ <key>start</key>
+ <array>
+ <dict>
+ <key>line</key><integer>395</integer>
+ <key>col</key><integer>5</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>395</integer>
+ <key>col</key><integer>12</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ <key>end</key>
+ <array>
+ <dict>
+ <key>line</key><integer>396</integer>
+ <key>col</key><integer>3</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>396</integer>
+ <key>col</key><integer>3</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ </dict>
+ </array>
+ </dict>
+ <dict>
+ <key>kind</key><string>event</string>
+ <key>location</key>
+ <dict>
+ <key>line</key><integer>396</integer>
+ <key>col</key><integer>4</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <key>ranges</key>
+ <array>
+ <array>
+ <dict>
+ <key>line</key><integer>396</integer>
+ <key>col</key><integer>4</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <dict>
+ <key>line</key><integer>396</integer>
+ <key>col</key><integer>11</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ </array>
+ </array>
+ <key>depth</key><integer>0</integer>
+ <key>extended_message</key>
+ <string>Object leaked: object allocated and stored into 'Original' is not referenced later in this execution path and has a retain count of +1</string>
+ <key>message</key>
+ <string>Object leaked: object allocated and stored into 'Original' is not referenced later in this execution path and has a retain count of +1</string>
+ </dict>
+ </array>
+ <key>description</key><string>Potential leak of an object stored into 'Original'</string>
+ <key>category</key><string>Memory (Core Foundation/Objective-C/OSObject)</string>
+ <key>type</key><string>Leak</string>
+ <key>check_name</key><string>osx.cocoa.RetainCount</string>
+ <!-- This hash is experimental and going to change! -->
+ <key>issue_hash_content_of_line_in_context</key><string>918946c323e2654da63c0d3b21f718fc</string>
+ <key>issue_context_kind</key><string>Objective-C method</string>
+ <key>issue_context</key><string>testLeakReassign:</string>
+ <key>issue_hash_function_offset</key><string>1</string>
+ <key>location</key>
+ <dict>
+ <key>line</key><integer>396</integer>
+ <key>col</key><integer>4</integer>
+ <key>file</key><integer>0</integer>
+ </dict>
+ <key>ExecutedLines</key>
+ <dict>
+ <key>0</key>
+ <array>
+ <integer>214</integer>
+ <integer>215</integer>
+ <integer>216</integer>
+ <integer>219</integer>
+ <integer>220</integer>
+ <integer>221</integer>
+ <integer>389</integer>
+ <integer>390</integer>
+ <integer>392</integer>
+ <integer>395</integer>
+ <integer>396</integer>
+ </array>
+ </dict>
+ </dict>
</array>
<key>files</key>
<array>
diff --git a/clang/test/Analysis/Inputs/expected-plists/retain-release.m.objc.plist b/clang/test/Analysis/Inputs/expected-plists/retain-release.m.objc.plist
index 8b5ab23df9ed6..5ccca4cea9afe 100644
--- a/clang/test/Analysis/Inputs/expected-plists/retain-release.m.objc.plist
+++ b/clang/test/Analysis/Inputs/expected-plists/retain-release.m.objc.plist
@@ -25407,12 +25407,12 @@
</dict>
<key>depth</key><integer>0</integer>
<key>extended_message</key>
- <string>Object leaked: object allocated and stored into 'obj' is not referenced later in this execution path and has a retain count of +1</string>
+ <string>Object leaked: object allocated and stored into 'second' is not referenced later in this execution path and has a retain count of +1</string>
<key>message</key>
- <string>Object leaked: object allocated and stored into 'obj' is not referenced later in this execution path and has a retain count of +1</string>
+ <string>Object leaked: object allocated and stored into 'second' is not referenced later in this execution path and has a retain count of +1</string>
</dict>
</array>
- <key>description</key><string>Potential leak of an object stored into 'obj'</string>
+ <key>description</key><string>Potential leak of an object stored into 'second'</string>
<key>category</key><string>Memory (Core Foundation/Objective-C/OSObject)</string>
<key>type</key><string>Leak</string>
<key>check_name</key><string>osx.cocoa.RetainCount</string>
@@ -25665,12 +25665,12 @@
</dict>
<key>depth</key><integer>0</integer>
<key>extended_message</key>
- <string>Object leaked: object allocated and stored into 'arr' is not referenced later in this execution path and has a retain count of +1</string>
+ <string>Object leaked: object allocated and stored into 'alias' is not referenced later in this execution path and has a retain count of +1</string>
<key>message</key>
- <string>Object leaked: object allocated and stored into 'arr' is not referenced later in this execution path and has a retain count of +1</string>
+ <string>Object leaked: object allocated and stored into 'alias' is not referenced later in this execution path and has a retain count of +1</string>
</dict>
</array>
- <key>description</key><string>Potential leak of an object stored into 'arr'</string>
+ <key>description</key><string>Potential leak of an object stored into 'alias'</string>
<key>category</key><string>Memory (Core Foundation/Objective-C/OSObject)</string>
<key>type</key><string>Leak</string>
<key>check_name</key><string>osx.cocoa.RetainCount</string>
diff --git a/clang/test/Analysis/Inputs/expected-plists/retain-release.m.objcpp.plist b/clang/test/Analysis/Inputs/expected-plists/retain-release.m.objcpp.plist
index d797626af86df..56d93bd43f9a1 100644
--- a/clang/test/Analysis/Inputs/expected-plists/retain-release.m.objcpp.plist
+++ b/clang/test/Analysis/Inputs/expected-plists/retain-release.m.objcpp.plist
@@ -25476,12 +25476,12 @@
</dict>
<key>depth</key><integer>0</integer>
<key>extended_message</key>
- <string>Object leaked: object allocated and stored into 'obj' is not referenced later in this execution path and has a retain count of +1</string>
+ <string>Object leaked: object allocated and stored into 'second' is not referenced later in this execution path and has a retain count of +1</string>
<key>message</key>
- <string>Object leaked: object allocated and stored into 'obj' is not referenced later in this execution path and has a retain count of +1</string>
+ <string>Object leaked: object allocated and stored into 'second' is not referenced later in this execution path and has a retain count of +1</string>
</dict>
</array>
- <key>description</key><string>Potential leak of an object stored into 'obj'</string>
+ <key>description</key><string>Potential leak of an object stored into 'second'</string>
<key>category</key><string>Memory (Core Foundation/Objective-C/OSObject)</string>
<key>type</key><string>Leak</string>
<key>check_name</key><string>osx.cocoa.RetainCount</string>
@@ -25734,12 +25734,12 @@
</dict>
<key>depth</key><integer>0</integer>
<key>extended_message</key>
- <string>Object leaked: object allocated and stored into 'arr' is not referenced later in this execution path and has a retain count of +1</string>
+ <string>Object leaked: object allocated and stored into 'alias' is not referenced later in this execution path and has a retain count of +1</string>
<key>message</key>
- <string>Object leaked: object allocated and stored into 'arr' is not referenced later in this execution path and has a retain count of +1</string>
+ <string>Object leaked: object allocated and stored into 'alias' is not referenced later in this execution path and has a retain count of +1</string>
</dict>
</array>
- <key>description</key><string>Potential leak of an object stored into 'arr'</string>
+ <key>description</key><string>Potential leak of an object stored into 'alias'</string>
<key>category</key><string>Memory (Core Foundation/Objective-C/OSObject)</string>
<key>type</key><string>Leak</string>
<key>check_name</key><string>osx.cocoa.RetainCount</string>
diff --git a/clang/test/Analysis/osobject-retain-release.cpp b/clang/test/Analysis/osobject-retain-release.cpp
index 41606a30c39f4..3b566976ae0f6 100644
--- a/clang/test/Analysis/osobject-retain-release.cpp
+++ b/clang/test/Analysis/osobject-retain-release.cpp
@@ -641,7 +641,7 @@ void test_smart_ptr_leak() {
OSObject *obj = new OSObject; // expected-note{{Operator 'new' returns an OSObject of type 'OSObject' with a +1 retain count}}
{
OSObjectPtr p(obj); // expected-note{{Calling constructor for 'smart_ptr<OSObject>'}}
- // expected-note at -1{{Returning from constructor for 'smart_ptr<OSObject>'}}
+ // expected-note at -1{{Returning from constructor for 'smart_ptr<OSObject>'}}
// expected-note at os_smart_ptr.h:13{{Field 'pointer' is non-null}}
// expected-note at os_smart_ptr.h:13{{Taking true branch}}
// expected-note at os_smart_ptr.h:14{{Calling 'smart_ptr::_retain'}}
@@ -653,9 +653,9 @@ void test_smart_ptr_leak() {
// expected-note at os_smart_ptr.h:36{{Calling 'smart_ptr::_release'}}
// expected-note at os_smart_ptr.h:76{{Reference count decremented. The object now has a +1 retain count}}
// expected-note at os_smart_ptr.h:36{{Returning from 'smart_ptr::_release'}}
- // expected-note at -6{{Returning from '~smart_ptr'}}
-} // expected-warning{{Potential leak of an object stored into 'obj'}}
-// expected-note at -1{{Object leaked: object allocated and stored into 'obj' is not referenced later in this execution path and has a retain count of +1}}
+ // expected-note at -6{{Returning from '~smart_ptr'}}
+} // expected-warning{{Potential leak of an object stored into 'p'}}
+// expected-note at -1{{Object leaked: object allocated and stored into 'p' is not referenced later in this execution path and has a retain count of +1}}
void test_smart_ptr_no_leak() {
OSObject *obj = new OSObject;
diff --git a/clang/test/Analysis/retain-release-path-notes.m b/clang/test/Analysis/retain-release-path-notes.m
index b6072bae6769a..e8ce8b474f41d 100644
--- a/clang/test/Analysis/retain-release-path-notes.m
+++ b/clang/test/Analysis/retain-release-path-notes.m
@@ -212,7 +212,7 @@ -(id)initX {
}
-(id)initY {
- self = [super init]; //expected-note {{Method returns an instance of MyObj with a +1 retain count}}
+ self = [super init]; // expected-note 6 {{Method returns an instance of MyObj with a +1 retain count}}
return self;
}
@@ -327,5 +327,74 @@ - (void)testOverreleaseIvarOnlyAutorelease {
@end
+int seed();
+ at interface LeakReassignmentTests : MyObj
+ at end
+
+ at implementation LeakReassignmentTests
++(void)testLeakAliasSimple {
+ id Original = [[MyObj alloc] initY]; // expected-note {{Calling 'initY'}}
+ // expected-note at -1 {{Returning from 'initY'}}
+ id New = Original;
+ Original = [[MyObj alloc] initZ];
+ (void)New;
+ [Original release]; // expected-warning {{Potential leak of an object stored into 'New'}}
+ // expected-note at -1 {{Object leaked: object allocated and stored into 'New' is not referenced later in this execution path and has a retain count of +1}}
+}
+
++(void)testLeakAliasChain {
+ id Original = [[MyObj alloc] initY]; // expected-note {{Calling 'initY'}}
+ // expected-note at -1 {{Returning from 'initY'}}
+ id Intermediate = Original;
+ id New = Intermediate;
+ Original = [[MyObj alloc] initZ];
+ (void)New;
+ [Original release]; // expected-warning {{Potential leak of an object stored into 'New'}}
+ // expected-note at -1 {{Object leaked: object allocated and stored into 'New' is not referenced later in this execution path and has a retain count of +1}}
+}
+
++(void)log:(id)Obj with:(int)Num {
+ Num *= 42;
+ if (Obj )
+ Num /= 2;
+}
+
++(int)calculate {
+ int x = 10;
+ int y = 25;
+ x += y * x + seed();
+ return y - x * y;
+}
+
++(void)testLeakAliasDeathInExpr {
+ id Original = [[MyObj alloc] initY]; // expected-note {{Calling 'initY'}}
+ // expected-note at -1 {{Returning from 'initY'}}
+ id New = Original;
+ Original = [[MyObj alloc] initZ];
+ [self log:New with:[self calculate]];
+ [Original release]; // expected-warning {{Potential leak of an object stored into 'New'}}
+ // expected-note at -1 {{Object leaked: object allocated and stored into 'New' is not referenced later in this execution path and has a retain count of +1}}
+}
+
++(void)testLeakReassign {
+ id Original = [[MyObj alloc] initY]; // expected-note {{Calling 'initY'}}
+ // expected-note at -1 {{Returning from 'initY'}}
+ // TODO: move warning here
+ Original = [[MyObj alloc] initZ];
+ [Original release]; // expected-warning {{Potential leak of an object stored into 'Original'}}
+ // expected-note at -1 {{Object leaked: object allocated and stored into 'Original' is not referenced later in this execution path and has a retain count of +1}}
+}
+
++(void)testLeakReassign:(int)cond {
+ id Original = [[MyObj alloc] initY]; // expected-note {{Calling 'initY'}}
+ // expected-note at -1 {{Returning from 'initY'}}
+ if (cond) // expected-note {{Assuming 'cond' is not equal to 0}}
+ // expected-note at -1 {{Taking true branch}}
+ // TODO: move warning here
+ Original = [[MyObj alloc] initZ];
+ [Original release]; // expected-warning {{Potential leak of an object stored into 'Original'}}
+ // expected-note at -1 {{Object leaked: object allocated and stored into 'Original' is not referenced later in this execution path and has a retain count of +1}}
+}
+ at end
diff --git a/clang/test/Analysis/retain-release.m b/clang/test/Analysis/retain-release.m
index e459fb7a0b858..a35b694688a10 100644
--- a/clang/test/Analysis/retain-release.m
+++ b/clang/test/Analysis/retain-release.m
@@ -2282,7 +2282,7 @@ void useAfterRelease() {
void testAutoreleaseReturnsInput() {
extern CFTypeRef CFCreateSomething();
- CFTypeRef obj = CFCreateSomething(); // expected-warning{{Potential leak of an object stored into 'obj'}}
+ CFTypeRef obj = CFCreateSomething(); // expected-warning{{Potential leak of an object stored into 'second'}}
CFTypeRef second = CFAutorelease(obj);
CFRetain(second);
}
@@ -2302,7 +2302,7 @@ void autoreleaseTypedObject() {
}
void autoreleaseReturningTypedObject() {
- CFArrayRef arr = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning{{Potential leak of an object stored into 'arr'}}
+ CFArrayRef arr = CFArrayCreateMutable(0, 10, &kCFTypeArrayCallBacks); // expected-warning{{Potential leak of an object stored into 'alias'}}
CFArrayRef alias = (CFArrayRef)CFAutorelease((CFTypeRef)arr);
CFRetain(alias);
}
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