[cfe-commits] r164442 - in /cfe/trunk: lib/StaticAnalyzer/Checkers/DereferenceChecker.cpp lib/StaticAnalyzer/Core/BugReporterVisitors.cpp lib/StaticAnalyzer/Core/ExprEngineObjC.cpp test/Analysis/ivars.m test/Analysis/misc-ps.m test/Analysis/null-deref-path-notes.m
Jordan Rose
jordan_rose at apple.com
Fri Sep 21 18:24:38 PDT 2012
Author: jrose
Date: Fri Sep 21 20:24:38 2012
New Revision: 164442
URL: http://llvm.org/viewvc/llvm-project?rev=164442&view=rev
Log:
[analyzer] Check that an ObjCIvarRefExpr's base is non-null even as an lvalue.
Like with struct fields, we want to catch cases like this early,
so that we can produce better diagnostics and path notes:
PointObj *p = nil;
int *px = &p->_x; // should warn here
*px = 1;
Added:
cfe/trunk/test/Analysis/null-deref-path-notes.m
Modified:
cfe/trunk/lib/StaticAnalyzer/Checkers/DereferenceChecker.cpp
cfe/trunk/lib/StaticAnalyzer/Core/BugReporterVisitors.cpp
cfe/trunk/lib/StaticAnalyzer/Core/ExprEngineObjC.cpp
cfe/trunk/test/Analysis/ivars.m
cfe/trunk/test/Analysis/misc-ps.m
Modified: cfe/trunk/lib/StaticAnalyzer/Checkers/DereferenceChecker.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/StaticAnalyzer/Checkers/DereferenceChecker.cpp?rev=164442&r1=164441&r2=164442&view=diff
==============================================================================
--- cfe/trunk/lib/StaticAnalyzer/Checkers/DereferenceChecker.cpp (original)
+++ cfe/trunk/lib/StaticAnalyzer/Checkers/DereferenceChecker.cpp Fri Sep 21 20:24:38 2012
@@ -91,6 +91,8 @@
BT_null.reset(new BuiltinBug("Dereference of null pointer"));
SmallString<100> buf;
+ llvm::raw_svector_ostream os(buf);
+
SmallVector<SourceRange, 2> Ranges;
// Walk through lvalue casts to get the original expression
@@ -112,7 +114,6 @@
switch (S->getStmtClass()) {
case Stmt::ArraySubscriptExprClass: {
- llvm::raw_svector_ostream os(buf);
os << "Array access";
const ArraySubscriptExpr *AE = cast<ArraySubscriptExpr>(S);
AddDerefSource(os, Ranges, AE->getBase()->IgnoreParenCasts(),
@@ -121,7 +122,6 @@
break;
}
case Stmt::UnaryOperatorClass: {
- llvm::raw_svector_ostream os(buf);
os << "Dereference of null pointer";
const UnaryOperator *U = cast<UnaryOperator>(S);
AddDerefSource(os, Ranges, U->getSubExpr()->IgnoreParens(),
@@ -131,7 +131,6 @@
case Stmt::MemberExprClass: {
const MemberExpr *M = cast<MemberExpr>(S);
if (M->isArrow() || bugreporter::isDeclRefExprToReference(M->getBase())) {
- llvm::raw_svector_ostream os(buf);
os << "Access to field '" << M->getMemberNameInfo()
<< "' results in a dereference of a null pointer";
AddDerefSource(os, Ranges, M->getBase()->IgnoreParenCasts(),
@@ -141,21 +140,17 @@
}
case Stmt::ObjCIvarRefExprClass: {
const ObjCIvarRefExpr *IV = cast<ObjCIvarRefExpr>(S);
- if (const DeclRefExpr *DR =
- dyn_cast<DeclRefExpr>(IV->getBase()->IgnoreParenCasts())) {
- if (const VarDecl *VD = dyn_cast<VarDecl>(DR->getDecl())) {
- llvm::raw_svector_ostream os(buf);
- os << "Instance variable access (via '" << VD->getName()
- << "') results in a null pointer dereference";
- }
- }
- Ranges.push_back(IV->getSourceRange());
+ os << "Access to instance variable '" << *IV->getDecl()
+ << "' results in a dereference of a null pointer";
+ AddDerefSource(os, Ranges, IV->getBase()->IgnoreParenCasts(),
+ State.getPtr(), N->getLocationContext(), true);
break;
}
default:
break;
}
+ os.flush();
BugReport *report =
new BugReport(*BT_null,
buf.empty() ? BT_null->getDescription() : buf.str(),
Modified: cfe/trunk/lib/StaticAnalyzer/Core/BugReporterVisitors.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/StaticAnalyzer/Core/BugReporterVisitors.cpp?rev=164442&r1=164441&r2=164442&view=diff
==============================================================================
--- cfe/trunk/lib/StaticAnalyzer/Core/BugReporterVisitors.cpp (original)
+++ cfe/trunk/lib/StaticAnalyzer/Core/BugReporterVisitors.cpp Fri Sep 21 20:24:38 2012
@@ -65,6 +65,9 @@
return ME->getBase()->IgnoreParenCasts();
}
}
+ else if (const ObjCIvarRefExpr *IvarRef = dyn_cast<ObjCIvarRefExpr>(S)) {
+ return IvarRef->getBase()->IgnoreParenCasts();
+ }
else if (const ArraySubscriptExpr *AE = dyn_cast<ArraySubscriptExpr>(S)) {
return AE->getBase();
}
Modified: cfe/trunk/lib/StaticAnalyzer/Core/ExprEngineObjC.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/StaticAnalyzer/Core/ExprEngineObjC.cpp?rev=164442&r1=164441&r2=164442&view=diff
==============================================================================
--- cfe/trunk/lib/StaticAnalyzer/Core/ExprEngineObjC.cpp (original)
+++ cfe/trunk/lib/StaticAnalyzer/Core/ExprEngineObjC.cpp Fri Sep 21 20:24:38 2012
@@ -25,11 +25,21 @@
ProgramStateRef state = Pred->getState();
const LocationContext *LCtx = Pred->getLocationContext();
SVal baseVal = state->getSVal(Ex->getBase(), LCtx);
+
+ // First check that the base object is valid.
+ ExplodedNodeSet DstLoc;
+ evalLocation(DstLoc, Ex, Ex, Pred, state, baseVal,
+ /*Tag=*/0, /*isLoad=*/true);
+
+ // Bind the lvalue to the expression.
SVal location = state->getLValue(Ex->getDecl(), baseVal);
ExplodedNodeSet dstIvar;
- StmtNodeBuilder Bldr(Pred, dstIvar, *currBldrCtx);
- Bldr.generateNode(Ex, Pred, state->BindExpr(Ex, LCtx, location));
+ StmtNodeBuilder Bldr(DstLoc, dstIvar, *currBldrCtx);
+ for (ExplodedNodeSet::iterator I = DstLoc.begin(), E = DstLoc.end();
+ I != E; ++I) {
+ Bldr.generateNode(Ex, (*I), (*I)->getState()->BindExpr(Ex, LCtx, location));
+ }
// Perform the post-condition check of the ObjCIvarRefExpr and store
// the created nodes in 'Dst'.
Modified: cfe/trunk/test/Analysis/ivars.m
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Analysis/ivars.m?rev=164442&r1=164441&r2=164442&view=diff
==============================================================================
--- cfe/trunk/test/Analysis/ivars.m (original)
+++ cfe/trunk/test/Analysis/ivars.m Fri Sep 21 20:24:38 2012
@@ -130,3 +130,11 @@
}
@end
+
+
+int testNull(Root *obj) {
+ if (obj) return 0;
+
+ int *x = &obj->uniqueID; // expected-warning{{Access to instance variable 'uniqueID' results in a dereference of a null pointer (loaded from variable 'obj')}}
+ return *x;
+}
Modified: cfe/trunk/test/Analysis/misc-ps.m
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Analysis/misc-ps.m?rev=164442&r1=164441&r2=164442&view=diff
==============================================================================
--- cfe/trunk/test/Analysis/misc-ps.m (original)
+++ cfe/trunk/test/Analysis/misc-ps.m Fri Sep 21 20:24:38 2012
@@ -1150,11 +1150,11 @@
@implementation RDar6352035
- (void)foo {
RDar6352035 *friend = 0;
- friend->c = 7; // expected-warning{{Instance variable access (via 'friend') results in a null pointer dereference}}
+ friend->c = 7; // expected-warning{{Access to instance variable 'c' results in a dereference of a null pointer (loaded from variable 'friend')}}
}
- (void)bar {
self = 0;
- c = 7; // expected-warning{{Instance variable access (via 'self') results in a null pointer dereference}}
+ c = 7; // expected-warning{{Access to instance variable 'c' results in a dereference of a null pointer (loaded from variable 'self')}}
}
@end
Added: cfe/trunk/test/Analysis/null-deref-path-notes.m
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Analysis/null-deref-path-notes.m?rev=164442&view=auto
==============================================================================
--- cfe/trunk/test/Analysis/null-deref-path-notes.m (added)
+++ cfe/trunk/test/Analysis/null-deref-path-notes.m Fri Sep 21 20:24:38 2012
@@ -0,0 +1,486 @@
+// RUN: %clang_cc1 -analyze -analyzer-checker=core -analyzer-store=region -analyzer-output=text -fblocks -verify -Wno-objc-root-class %s
+// RUN: %clang_cc1 -analyze -analyzer-checker=core -analyzer-store=region -analyzer-output=plist-multi-file -fblocks -Wno-objc-root-class %s -o - | FileCheck %s
+
+ at interface Root {
+ at public
+ int uniqueID;
+}
+- (id)initWithID:(int)newID;
+- (void)refreshID;
+ at end
+
+int testNull(Root *obj) {
+ if (obj) return 0;
+ // expected-note at -1 {{Assuming 'obj' is nil}}
+ // expected-note at -2 {{Assuming pointer value is null}}
+ // expected-note at -3 {{Taking false branch}}
+ // FIXME: We don't need the second note. <rdar://problem/12252783>
+
+ int *x = &obj->uniqueID; // expected-warning{{Access to instance variable 'uniqueID' results in a dereference of a null pointer (loaded from variable 'obj')}} expected-note{{Access to instance variable 'uniqueID' results in a dereference of a null pointer (loaded from variable 'obj')}}
+ return *x;
+}
+
+
+ at interface Subclass : Root
+ at end
+
+ at implementation Subclass
+- (id)initWithID:(int)newID {
+ self = [super initWithID:newID]; // expected-note{{Value assigned to 'self'}}
+ if (self) return self;
+ // expected-note at -1 {{Assuming 'self' is nil}}
+ // expected-note at -2 {{Assuming pointer value is null}}
+ // expected-note at -3 {{Taking false branch}}
+ // FIXME: We don't need the second note. <rdar://problem/12252783>
+
+ uniqueID = newID; // expected-warning{{Access to instance variable 'uniqueID' results in a dereference of a null pointer (loaded from variable 'self')}} expected-note{{Access to instance variable 'uniqueID' results in a dereference of a null pointer (loaded from variable 'self')}}
+ return self;
+}
+
+ at end
+
+
+// CHECK: <key>diagnostics</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>path</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>kind</key><string>control</string>
+// CHECK-NEXT: <key>edges</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>start</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>13</integer>
+// CHECK-NEXT: <key>col</key><integer>3</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>13</integer>
+// CHECK-NEXT: <key>col</key><integer>4</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: <key>end</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>13</integer>
+// CHECK-NEXT: <key>col</key><integer>7</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>13</integer>
+// CHECK-NEXT: <key>col</key><integer>9</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>kind</key><string>event</string>
+// CHECK-NEXT: <key>location</key>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>13</integer>
+// CHECK-NEXT: <key>col</key><integer>7</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <key>ranges</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>13</integer>
+// CHECK-NEXT: <key>col</key><integer>7</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>13</integer>
+// CHECK-NEXT: <key>col</key><integer>9</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: <key>depth</key><integer>0</integer>
+// CHECK-NEXT: <key>extended_message</key>
+// CHECK-NEXT: <string>Assuming 'obj' is nil</string>
+// CHECK-NEXT: <key>message</key>
+// CHECK-NEXT: <string>Assuming 'obj' is nil</string>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>kind</key><string>event</string>
+// CHECK-NEXT: <key>location</key>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>13</integer>
+// CHECK-NEXT: <key>col</key><integer>7</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <key>ranges</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>13</integer>
+// CHECK-NEXT: <key>col</key><integer>7</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>13</integer>
+// CHECK-NEXT: <key>col</key><integer>9</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: <key>depth</key><integer>0</integer>
+// CHECK-NEXT: <key>extended_message</key>
+// CHECK-NEXT: <string>Assuming pointer value is null</string>
+// CHECK-NEXT: <key>message</key>
+// CHECK-NEXT: <string>Assuming pointer value is null</string>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>kind</key><string>control</string>
+// CHECK-NEXT: <key>edges</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>start</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>13</integer>
+// CHECK-NEXT: <key>col</key><integer>7</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>13</integer>
+// CHECK-NEXT: <key>col</key><integer>9</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: <key>end</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>19</integer>
+// CHECK-NEXT: <key>col</key><integer>3</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>19</integer>
+// CHECK-NEXT: <key>col</key><integer>5</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>kind</key><string>control</string>
+// CHECK-NEXT: <key>edges</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>start</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>19</integer>
+// CHECK-NEXT: <key>col</key><integer>3</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>19</integer>
+// CHECK-NEXT: <key>col</key><integer>5</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: <key>end</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>19</integer>
+// CHECK-NEXT: <key>col</key><integer>13</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>19</integer>
+// CHECK-NEXT: <key>col</key><integer>15</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>kind</key><string>event</string>
+// CHECK-NEXT: <key>location</key>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>19</integer>
+// CHECK-NEXT: <key>col</key><integer>13</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <key>ranges</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>19</integer>
+// CHECK-NEXT: <key>col</key><integer>13</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>19</integer>
+// CHECK-NEXT: <key>col</key><integer>15</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: <key>depth</key><integer>0</integer>
+// CHECK-NEXT: <key>extended_message</key>
+// CHECK-NEXT: <string>Access to instance variable 'uniqueID' results in a dereference of a null pointer (loaded from variable 'obj')</string>
+// CHECK-NEXT: <key>message</key>
+// CHECK-NEXT: <string>Access to instance variable 'uniqueID' results in a dereference of a null pointer (loaded from variable 'obj')</string>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: <key>description</key><string>Access to instance variable 'uniqueID' results in a dereference of a null pointer (loaded from variable 'obj')</string>
+// CHECK-NEXT: <key>category</key><string>Logic error</string>
+// CHECK-NEXT: <key>type</key><string>Dereference of null pointer</string>
+// CHECK-NEXT: <key>issue_context_kind</key><string>function</string>
+// CHECK-NEXT: <key>issue_context</key><string>testNull</string>
+// CHECK-NEXT: <key>issue_hash</key><integer>7</integer>
+// CHECK-NEXT: <key>location</key>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>19</integer>
+// CHECK-NEXT: <key>col</key><integer>13</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>path</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>kind</key><string>event</string>
+// CHECK-NEXT: <key>location</key>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>29</integer>
+// CHECK-NEXT: <key>col</key><integer>3</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <key>ranges</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>29</integer>
+// CHECK-NEXT: <key>col</key><integer>3</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>29</integer>
+// CHECK-NEXT: <key>col</key><integer>33</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: <key>depth</key><integer>0</integer>
+// CHECK-NEXT: <key>extended_message</key>
+// CHECK-NEXT: <string>Value assigned to 'self'</string>
+// CHECK-NEXT: <key>message</key>
+// CHECK-NEXT: <string>Value assigned to 'self'</string>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>kind</key><string>control</string>
+// CHECK-NEXT: <key>edges</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>start</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>29</integer>
+// CHECK-NEXT: <key>col</key><integer>3</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>29</integer>
+// CHECK-NEXT: <key>col</key><integer>6</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: <key>end</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>30</integer>
+// CHECK-NEXT: <key>col</key><integer>3</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>30</integer>
+// CHECK-NEXT: <key>col</key><integer>4</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>kind</key><string>control</string>
+// CHECK-NEXT: <key>edges</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>start</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>30</integer>
+// CHECK-NEXT: <key>col</key><integer>3</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>30</integer>
+// CHECK-NEXT: <key>col</key><integer>4</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: <key>end</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>30</integer>
+// CHECK-NEXT: <key>col</key><integer>7</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>30</integer>
+// CHECK-NEXT: <key>col</key><integer>10</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>kind</key><string>event</string>
+// CHECK-NEXT: <key>location</key>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>30</integer>
+// CHECK-NEXT: <key>col</key><integer>7</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <key>ranges</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>30</integer>
+// CHECK-NEXT: <key>col</key><integer>7</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>30</integer>
+// CHECK-NEXT: <key>col</key><integer>10</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: <key>depth</key><integer>0</integer>
+// CHECK-NEXT: <key>extended_message</key>
+// CHECK-NEXT: <string>Assuming 'self' is nil</string>
+// CHECK-NEXT: <key>message</key>
+// CHECK-NEXT: <string>Assuming 'self' is nil</string>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>kind</key><string>event</string>
+// CHECK-NEXT: <key>location</key>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>30</integer>
+// CHECK-NEXT: <key>col</key><integer>7</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <key>ranges</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>30</integer>
+// CHECK-NEXT: <key>col</key><integer>7</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>30</integer>
+// CHECK-NEXT: <key>col</key><integer>10</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: <key>depth</key><integer>0</integer>
+// CHECK-NEXT: <key>extended_message</key>
+// CHECK-NEXT: <string>Assuming pointer value is null</string>
+// CHECK-NEXT: <key>message</key>
+// CHECK-NEXT: <string>Assuming pointer value is null</string>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>kind</key><string>control</string>
+// CHECK-NEXT: <key>edges</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>start</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>30</integer>
+// CHECK-NEXT: <key>col</key><integer>7</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>30</integer>
+// CHECK-NEXT: <key>col</key><integer>10</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: <key>end</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>36</integer>
+// CHECK-NEXT: <key>col</key><integer>3</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>36</integer>
+// CHECK-NEXT: <key>col</key><integer>10</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>kind</key><string>event</string>
+// CHECK-NEXT: <key>location</key>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>36</integer>
+// CHECK-NEXT: <key>col</key><integer>3</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <key>ranges</key>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <array>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>36</integer>
+// CHECK-NEXT: <key>col</key><integer>3</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>36</integer>
+// CHECK-NEXT: <key>col</key><integer>10</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: <key>depth</key><integer>0</integer>
+// CHECK-NEXT: <key>extended_message</key>
+// CHECK-NEXT: <string>Access to instance variable 'uniqueID' results in a dereference of a null pointer (loaded from variable 'self')</string>
+// CHECK-NEXT: <key>message</key>
+// CHECK-NEXT: <string>Access to instance variable 'uniqueID' results in a dereference of a null pointer (loaded from variable 'self')</string>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: <key>description</key><string>Access to instance variable 'uniqueID' results in a dereference of a null pointer (loaded from variable 'self')</string>
+// CHECK-NEXT: <key>category</key><string>Logic error</string>
+// CHECK-NEXT: <key>type</key><string>Dereference of null pointer</string>
+// CHECK-NEXT: <key>issue_context_kind</key><string>Objective-C method</string>
+// CHECK-NEXT: <key>issue_context</key><string>initWithID:</string>
+// CHECK-NEXT: <key>issue_hash</key><integer>8</integer>
+// CHECK-NEXT: <key>location</key>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>36</integer>
+// CHECK-NEXT: <key>col</key><integer>3</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
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