r283094 - [analyzer] Improve CloneChecker diagnostics
Artem Dergachev via cfe-commits
cfe-commits at lists.llvm.org
Mon Oct 3 01:11:51 PDT 2016
Author: dergachev
Date: Mon Oct 3 03:11:50 2016
New Revision: 283094
URL: http://llvm.org/viewvc/llvm-project?rev=283094&view=rev
Log:
[analyzer] Improve CloneChecker diagnostics
Highlight code clones referenced by the warning message with the help of
the extra notes feature recently introduced in r283092.
Change warning text to more clang-ish. Remove suggestions from the copy-paste
error checker diagnostics, because currently our suggestions are strictly 50%
wrong (we do not know which of the two code clones contains the error), and
for that reason we should not sound as if we're actually suggesting this.
Hopefully a better solution would bring them back.
Make sure the suspicious clone pair structure always mentions
the correct variable for the second clone.
Differential Revision: https://reviews.llvm.org/D24916
Added:
cfe/trunk/test/Analysis/copypaste/plist-diagnostics-notes-as-events.cpp
cfe/trunk/test/Analysis/copypaste/plist-diagnostics.cpp
cfe/trunk/test/Analysis/copypaste/text-diagnostics.cpp
Modified:
cfe/trunk/include/clang/Analysis/CloneDetection.h
cfe/trunk/lib/Analysis/CloneDetection.cpp
cfe/trunk/lib/StaticAnalyzer/Checkers/CloneChecker.cpp
cfe/trunk/test/Analysis/copypaste/blocks.cpp
cfe/trunk/test/Analysis/copypaste/function-try-block.cpp
cfe/trunk/test/Analysis/copypaste/functions.cpp
cfe/trunk/test/Analysis/copypaste/macro-complexity.cpp
cfe/trunk/test/Analysis/copypaste/macros.cpp
cfe/trunk/test/Analysis/copypaste/objc-methods.m
cfe/trunk/test/Analysis/copypaste/sub-sequences.cpp
cfe/trunk/test/Analysis/copypaste/suspicious-clones.cpp
Modified: cfe/trunk/include/clang/Analysis/CloneDetection.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Analysis/CloneDetection.h?rev=283094&r1=283093&r2=283094&view=diff
==============================================================================
--- cfe/trunk/include/clang/Analysis/CloneDetection.h (original)
+++ cfe/trunk/include/clang/Analysis/CloneDetection.h Mon Oct 3 03:11:50 2016
@@ -128,6 +128,10 @@ public:
/// This method should only be called on a non-empty StmtSequence object.
SourceLocation getEndLoc() const;
+ /// Returns the source range of the whole sequence - from the beginning
+ /// of the first statement to the end of the last statement.
+ SourceRange getSourceRange() const;
+
bool operator==(const StmtSequence &Other) const {
return std::tie(S, StartIndex, EndIndex) ==
std::tie(Other.S, Other.StartIndex, Other.EndIndex);
@@ -250,14 +254,14 @@ public:
/// The variable which referencing in this clone was against the pattern.
const VarDecl *Variable;
/// Where the variable was referenced.
- SourceRange VarRange;
+ const Stmt *Mention;
/// The variable that should have been referenced to follow the pattern.
/// If Suggestion is a nullptr then it's not possible to fix the pattern
/// by referencing a different variable in this clone.
const VarDecl *Suggestion;
- SuspiciousCloneInfo(const VarDecl *Variable, SourceRange Range,
+ SuspiciousCloneInfo(const VarDecl *Variable, const Stmt *Mention,
const VarDecl *Suggestion)
- : Variable(Variable), VarRange(Range), Suggestion(Suggestion) {}
+ : Variable(Variable), Mention(Mention), Suggestion(Suggestion) {}
SuspiciousCloneInfo() {}
};
/// The first clone in the pair which always has a suggested variable.
Modified: cfe/trunk/lib/Analysis/CloneDetection.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Analysis/CloneDetection.cpp?rev=283094&r1=283093&r2=283094&view=diff
==============================================================================
--- cfe/trunk/lib/Analysis/CloneDetection.cpp (original)
+++ cfe/trunk/lib/Analysis/CloneDetection.cpp Mon Oct 3 03:11:50 2016
@@ -82,6 +82,10 @@ SourceLocation StmtSequence::getStartLoc
SourceLocation StmtSequence::getEndLoc() const { return back()->getLocEnd(); }
+SourceRange StmtSequence::getSourceRange() const {
+ return SourceRange(getStartLoc(), getEndLoc());
+}
+
namespace {
/// \brief Analyzes the pattern of the referenced variables in a statement.
@@ -91,11 +95,11 @@ class VariablePattern {
struct VariableOccurence {
/// The index of the associated VarDecl in the Variables vector.
size_t KindID;
- /// The source range in the code where the variable was referenced.
- SourceRange Range;
+ /// The statement in the code where the variable was referenced.
+ const Stmt *Mention;
- VariableOccurence(size_t KindID, SourceRange Range)
- : KindID(KindID), Range(Range) {}
+ VariableOccurence(size_t KindID, const Stmt *Mention)
+ : KindID(KindID), Mention(Mention) {}
};
/// All occurences of referenced variables in the order of appearance.
@@ -107,19 +111,19 @@ class VariablePattern {
/// \brief Adds a new variable referenced to this pattern.
/// \param VarDecl The declaration of the variable that is referenced.
/// \param Range The SourceRange where this variable is referenced.
- void addVariableOccurence(const VarDecl *VarDecl, SourceRange Range) {
+ void addVariableOccurence(const VarDecl *VarDecl, const Stmt *Mention) {
// First check if we already reference this variable
for (size_t KindIndex = 0; KindIndex < Variables.size(); ++KindIndex) {
if (Variables[KindIndex] == VarDecl) {
// If yes, add a new occurence that points to the existing entry in
// the Variables vector.
- Occurences.emplace_back(KindIndex, Range);
+ Occurences.emplace_back(KindIndex, Mention);
return;
}
}
// If this variable wasn't already referenced, add it to the list of
// referenced variables and add a occurence that points to this new entry.
- Occurences.emplace_back(Variables.size(), Range);
+ Occurences.emplace_back(Variables.size(), Mention);
Variables.push_back(VarDecl);
}
@@ -134,7 +138,7 @@ class VariablePattern {
// Check if S is a reference to a variable. If yes, add it to the pattern.
if (auto D = dyn_cast<DeclRefExpr>(S)) {
if (auto VD = dyn_cast<VarDecl>(D->getDecl()->getCanonicalDecl()))
- addVariableOccurence(VD, D->getSourceRange());
+ addVariableOccurence(VD, D);
}
// Recursively check all children of the given statement.
@@ -208,7 +212,7 @@ public:
// Store information about the first clone.
FirstMismatch->FirstCloneInfo =
CloneDetector::SuspiciousClonePair::SuspiciousCloneInfo(
- Variables[ThisOccurence.KindID], ThisOccurence.Range,
+ Variables[ThisOccurence.KindID], ThisOccurence.Mention,
FirstSuggestion);
// Same as above but with the other clone. We do this for both clones as
@@ -221,7 +225,7 @@ public:
// Store information about the second clone.
FirstMismatch->SecondCloneInfo =
CloneDetector::SuspiciousClonePair::SuspiciousCloneInfo(
- Variables[ThisOccurence.KindID], OtherOccurence.Range,
+ Other.Variables[OtherOccurence.KindID], OtherOccurence.Mention,
SecondSuggestion);
// SuspiciousClonePair guarantees that the first clone always has a
Modified: cfe/trunk/lib/StaticAnalyzer/Checkers/CloneChecker.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/StaticAnalyzer/Checkers/CloneChecker.cpp?rev=283094&r1=283093&r2=283094&view=diff
==============================================================================
--- cfe/trunk/lib/StaticAnalyzer/Checkers/CloneChecker.cpp (original)
+++ cfe/trunk/lib/StaticAnalyzer/Checkers/CloneChecker.cpp Mon Oct 3 03:11:50 2016
@@ -16,8 +16,10 @@
#include "ClangSACheckers.h"
#include "clang/Analysis/CloneDetection.h"
#include "clang/Basic/Diagnostic.h"
+#include "clang/StaticAnalyzer/Core/BugReporter/BugType.h"
#include "clang/StaticAnalyzer/Core/Checker.h"
#include "clang/StaticAnalyzer/Core/CheckerManager.h"
+#include "clang/StaticAnalyzer/Core/PathSensitive/AnalysisManager.h"
#include "clang/StaticAnalyzer/Core/PathSensitive/CheckerContext.h"
using namespace clang;
@@ -27,6 +29,7 @@ namespace {
class CloneChecker
: public Checker<check::ASTCodeBody, check::EndOfTranslationUnit> {
mutable CloneDetector Detector;
+ mutable std::unique_ptr<BugType> BT_Exact, BT_Suspicious;
public:
void checkASTCodeBody(const Decl *D, AnalysisManager &Mgr,
@@ -36,12 +39,12 @@ public:
AnalysisManager &Mgr, BugReporter &BR) const;
/// \brief Reports all clones to the user.
- void reportClones(SourceManager &SM, AnalysisManager &Mgr,
+ void reportClones(BugReporter &BR, AnalysisManager &Mgr,
int MinComplexity) const;
/// \brief Reports only suspicious clones to the user along with informaton
/// that explain why they are suspicious.
- void reportSuspiciousClones(SourceManager &SM, AnalysisManager &Mgr,
+ void reportSuspiciousClones(BugReporter &BR, AnalysisManager &Mgr,
int MinComplexity) const;
};
} // end anonymous namespace
@@ -70,79 +73,82 @@ void CloneChecker::checkEndOfTranslation
"ReportNormalClones", true, this);
if (ReportSuspiciousClones)
- reportSuspiciousClones(BR.getSourceManager(), Mgr, MinComplexity);
+ reportSuspiciousClones(BR, Mgr, MinComplexity);
if (ReportNormalClones)
- reportClones(BR.getSourceManager(), Mgr, MinComplexity);
+ reportClones(BR, Mgr, MinComplexity);
}
-void CloneChecker::reportClones(SourceManager &SM, AnalysisManager &Mgr,
+static PathDiagnosticLocation makeLocation(const StmtSequence &S,
+ AnalysisManager &Mgr) {
+ ASTContext &ACtx = Mgr.getASTContext();
+ return PathDiagnosticLocation::createBegin(
+ S.front(), ACtx.getSourceManager(),
+ Mgr.getAnalysisDeclContext(ACtx.getTranslationUnitDecl()));
+}
+
+void CloneChecker::reportClones(BugReporter &BR, AnalysisManager &Mgr,
int MinComplexity) const {
std::vector<CloneDetector::CloneGroup> CloneGroups;
Detector.findClones(CloneGroups, MinComplexity);
- DiagnosticsEngine &DiagEngine = Mgr.getDiagnostic();
-
- unsigned WarnID = DiagEngine.getCustomDiagID(DiagnosticsEngine::Warning,
- "Detected code clone.");
-
- unsigned NoteID = DiagEngine.getCustomDiagID(DiagnosticsEngine::Note,
- "Related code clone is here.");
+ if (!BT_Exact)
+ BT_Exact.reset(new BugType(this, "Exact code clone", "Code clone"));
for (CloneDetector::CloneGroup &Group : CloneGroups) {
// We group the clones by printing the first as a warning and all others
// as a note.
- DiagEngine.Report(Group.Sequences.front().getStartLoc(), WarnID);
- for (unsigned i = 1; i < Group.Sequences.size(); ++i) {
- DiagEngine.Report(Group.Sequences[i].getStartLoc(), NoteID);
- }
+ auto R = llvm::make_unique<BugReport>(
+ *BT_Exact, "Duplicate code detected",
+ makeLocation(Group.Sequences.front(), Mgr));
+ R->addRange(Group.Sequences.front().getSourceRange());
+
+ for (unsigned i = 1; i < Group.Sequences.size(); ++i)
+ R->addNote("Similar code here",
+ makeLocation(Group.Sequences[i], Mgr),
+ Group.Sequences[i].getSourceRange());
+ BR.emitReport(std::move(R));
}
}
-void CloneChecker::reportSuspiciousClones(SourceManager &SM,
+void CloneChecker::reportSuspiciousClones(BugReporter &BR,
AnalysisManager &Mgr,
int MinComplexity) const {
std::vector<CloneDetector::SuspiciousClonePair> Clones;
Detector.findSuspiciousClones(Clones, MinComplexity);
- DiagnosticsEngine &DiagEngine = Mgr.getDiagnostic();
-
- auto SuspiciousCloneWarning = DiagEngine.getCustomDiagID(
- DiagnosticsEngine::Warning, "suspicious code clone detected; did you "
- "mean to use %0?");
-
- auto RelatedCloneNote = DiagEngine.getCustomDiagID(
- DiagnosticsEngine::Note, "suggestion is based on the usage of this "
- "variable in a similar piece of code");
-
- auto RelatedSuspiciousCloneNote = DiagEngine.getCustomDiagID(
- DiagnosticsEngine::Note, "suggestion is based on the usage of this "
- "variable in a similar piece of code; did you "
- "mean to use %0?");
+ if (!BT_Suspicious)
+ BT_Suspicious.reset(
+ new BugType(this, "Suspicious code clone", "Code clone"));
+
+ ASTContext &ACtx = BR.getContext();
+ SourceManager &SM = ACtx.getSourceManager();
+ AnalysisDeclContext *ADC =
+ Mgr.getAnalysisDeclContext(ACtx.getTranslationUnitDecl());
for (CloneDetector::SuspiciousClonePair &Pair : Clones) {
- // The first clone always has a suggestion and we report it to the user
- // along with the place where the suggestion should be used.
- DiagEngine.Report(Pair.FirstCloneInfo.VarRange.getBegin(),
- SuspiciousCloneWarning)
- << Pair.FirstCloneInfo.VarRange << Pair.FirstCloneInfo.Suggestion;
-
- // The second clone can have a suggestion and if there is one, we report
- // that suggestion to the user.
- if (Pair.SecondCloneInfo.Suggestion) {
- DiagEngine.Report(Pair.SecondCloneInfo.VarRange.getBegin(),
- RelatedSuspiciousCloneNote)
- << Pair.SecondCloneInfo.VarRange << Pair.SecondCloneInfo.Suggestion;
- continue;
- }
-
- // If there isn't a suggestion in the second clone, we only inform the
- // user where we got the idea that his code could contain an error.
- DiagEngine.Report(Pair.SecondCloneInfo.VarRange.getBegin(),
- RelatedCloneNote)
- << Pair.SecondCloneInfo.VarRange;
+ // FIXME: We are ignoring the suggestions currently, because they are
+ // only 50% accurate (even if the second suggestion is unavailable),
+ // which may confuse the user.
+ // Think how to perform more accurate suggestions?
+
+ auto R = llvm::make_unique<BugReport>(
+ *BT_Suspicious,
+ "Potential copy-paste error; did you really mean to use '" +
+ Pair.FirstCloneInfo.Variable->getNameAsString() + "' here?",
+ PathDiagnosticLocation::createBegin(Pair.FirstCloneInfo.Mention, SM,
+ ADC));
+ R->addRange(Pair.FirstCloneInfo.Mention->getSourceRange());
+
+ R->addNote("Similar code using '" +
+ Pair.SecondCloneInfo.Variable->getNameAsString() + "' here",
+ PathDiagnosticLocation::createBegin(Pair.SecondCloneInfo.Mention,
+ SM, ADC),
+ Pair.SecondCloneInfo.Mention->getSourceRange());
+
+ BR.emitReport(std::move(R));
}
}
Modified: cfe/trunk/test/Analysis/copypaste/blocks.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Analysis/copypaste/blocks.cpp?rev=283094&r1=283093&r2=283094&view=diff
==============================================================================
--- cfe/trunk/test/Analysis/copypaste/blocks.cpp (original)
+++ cfe/trunk/test/Analysis/copypaste/blocks.cpp Mon Oct 3 03:11:50 2016
@@ -4,14 +4,14 @@
void log();
-auto BlockA = ^(int a, int b){ // expected-warning{{Detected code clone.}}
+auto BlockA = ^(int a, int b){ // expected-warning{{Duplicate code detected}}
log();
if (a > b)
return a;
return b;
};
-auto BlockB = ^(int a, int b){ // expected-note{{Related code clone is here.}}
+auto BlockB = ^(int a, int b){ // expected-note{{Similar code here}}
log();
if (a > b)
return a;
Modified: cfe/trunk/test/Analysis/copypaste/function-try-block.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Analysis/copypaste/function-try-block.cpp?rev=283094&r1=283093&r2=283094&view=diff
==============================================================================
--- cfe/trunk/test/Analysis/copypaste/function-try-block.cpp (original)
+++ cfe/trunk/test/Analysis/copypaste/function-try-block.cpp Mon Oct 3 03:11:50 2016
@@ -3,7 +3,7 @@
// Tests if function try blocks are correctly handled.
void nonCompoundStmt1(int& x)
- try { x += 1; } catch(...) { x -= 1; } // expected-warning{{Detected code clone.}}
+ try { x += 1; } catch(...) { x -= 1; } // expected-warning{{Duplicate code detected}}
void nonCompoundStmt2(int& x)
- try { x += 1; } catch(...) { x -= 1; } // expected-note{{Related code clone is here.}}
+ try { x += 1; } catch(...) { x -= 1; } // expected-note{{Similar code here}}
Modified: cfe/trunk/test/Analysis/copypaste/functions.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Analysis/copypaste/functions.cpp?rev=283094&r1=283093&r2=283094&view=diff
==============================================================================
--- cfe/trunk/test/Analysis/copypaste/functions.cpp (original)
+++ cfe/trunk/test/Analysis/copypaste/functions.cpp Mon Oct 3 03:11:50 2016
@@ -4,14 +4,14 @@
void log();
-int max(int a, int b) { // expected-warning{{Detected code clone.}}
+int max(int a, int b) { // expected-warning{{Duplicate code detected}}
log();
if (a > b)
return a;
return b;
}
-int maxClone(int x, int y) { // expected-note{{Related code clone is here.}}
+int maxClone(int x, int y) { // expected-note{{Similar code here}}
log();
if (x > y)
return x;
Modified: cfe/trunk/test/Analysis/copypaste/macro-complexity.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Analysis/copypaste/macro-complexity.cpp?rev=283094&r1=283093&r2=283094&view=diff
==============================================================================
--- cfe/trunk/test/Analysis/copypaste/macro-complexity.cpp (original)
+++ cfe/trunk/test/Analysis/copypaste/macro-complexity.cpp Mon Oct 3 03:11:50 2016
@@ -11,11 +11,11 @@
// This confirms that with the current configuration the macro body would be
// considered large enough to pass the MinimumCloneComplexity constraint.
-int manualMacro(int a, int b) { // expected-warning{{Detected code clone.}}
+int manualMacro(int a, int b) { // expected-warning{{Duplicate code detected}}
return a > b ? -a * a : -b * b;
}
-int manualMacroClone(int a, int b) { // expected-note{{Related code clone is here.}}
+int manualMacroClone(int a, int b) { // expected-note{{Similar code here}}
return a > b ? -a * a : -b * b;
}
@@ -41,10 +41,10 @@ int macroClone(int a, int b) {
#define NEG(A) -(A)
-int nestedMacros() { // expected-warning{{Detected code clone.}}
+int nestedMacros() { // expected-warning{{Duplicate code detected}}
return NEG(NEG(NEG(NEG(NEG(NEG(NEG(NEG(NEG(NEG(1))))))))));
}
-int nestedMacrosClone() { // expected-note{{Related code clone is here.}}
+int nestedMacrosClone() { // expected-note{{Similar code here}}
return NEG(NEG(NEG(NEG(NEG(NEG(NEG(NEG(NEG(NEG(1))))))))));
}
Modified: cfe/trunk/test/Analysis/copypaste/macros.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Analysis/copypaste/macros.cpp?rev=283094&r1=283093&r2=283094&view=diff
==============================================================================
--- cfe/trunk/test/Analysis/copypaste/macros.cpp (original)
+++ cfe/trunk/test/Analysis/copypaste/macros.cpp Mon Oct 3 03:11:50 2016
@@ -5,7 +5,7 @@
// to have the same complexity value. Macros have smaller complexity values
// and need to be in their own hash group.
-int foo(int a) { // expected-warning{{Detected code clone.}}
+int foo(int a) { // expected-warning{{Duplicate code detected}}
a = a + 1;
a = a + 1 / 1;
a = a + 1 + 1 + 1;
@@ -15,7 +15,7 @@ int foo(int a) { // expected-warning{{De
return a;
}
-int fooClone(int a) { // expected-note{{Related code clone is here.}}
+int fooClone(int a) { // expected-note{{Similar code here}}
a = a + 1;
a = a + 1 / 1;
a = a + 1 + 1 + 1;
@@ -30,7 +30,7 @@ int fooClone(int a) { // expected-note{{
#define ASSIGN(T, V) T = T + V
-int macro(int a) { // expected-warning{{Detected code clone.}}
+int macro(int a) { // expected-warning{{Duplicate code detected}}
ASSIGN(a, 1);
ASSIGN(a, 1 / 1);
ASSIGN(a, 1 + 1 + 1);
@@ -40,7 +40,7 @@ int macro(int a) { // expected-warning{{
return a;
}
-int macroClone(int a) { // expected-note{{Related code clone is here.}}
+int macroClone(int a) { // expected-note{{Similar code here}}
ASSIGN(a, 1);
ASSIGN(a, 1 / 1);
ASSIGN(a, 1 + 1 + 1);
@@ -54,7 +54,7 @@ int macroClone(int a) { // expected-note
#define EMPTY
-int fooFalsePositiveClone(int a) { // expected-note{{Related code clone is here.}}
+int fooFalsePositiveClone(int a) { // expected-note{{Similar code here}}
a = EMPTY a + 1;
a = a + 1 / 1;
a = a + 1 + 1 + 1;
Modified: cfe/trunk/test/Analysis/copypaste/objc-methods.m
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Analysis/copypaste/objc-methods.m?rev=283094&r1=283093&r2=283094&view=diff
==============================================================================
--- cfe/trunk/test/Analysis/copypaste/objc-methods.m (original)
+++ cfe/trunk/test/Analysis/copypaste/objc-methods.m Mon Oct 3 03:11:50 2016
@@ -7,7 +7,7 @@
@end
@implementation A
-- (int) setOk : (int) a : (int) b { // expected-warning{{Detected code clone.}}
+- (int) setOk : (int) a : (int) b { // expected-warning{{Duplicate code detected}}
if (a > b)
return a;
return b;
@@ -19,7 +19,7 @@
@end
@implementation B
-- (int) setOk : (int) a : (int) b { // expected-note{{Related code clone is here.}}
+- (int) setOk : (int) a : (int) b { // expected-note{{Similar code here}}
if (a > b)
return a;
return b;
Added: cfe/trunk/test/Analysis/copypaste/plist-diagnostics-notes-as-events.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Analysis/copypaste/plist-diagnostics-notes-as-events.cpp?rev=283094&view=auto
==============================================================================
--- cfe/trunk/test/Analysis/copypaste/plist-diagnostics-notes-as-events.cpp (added)
+++ cfe/trunk/test/Analysis/copypaste/plist-diagnostics-notes-as-events.cpp Mon Oct 3 03:11:50 2016
@@ -0,0 +1,97 @@
+// RUN: %clang_cc1 -analyze -analyzer-output=plist -analyzer-config notes-as-events=true -o %t.plist -std=c++11 -analyzer-checker=alpha.clone.CloneChecker -verify %s
+// RUN: FileCheck --input-file=%t.plist %s
+
+void log();
+
+int max(int a, int b) { // expected-warning{{Duplicate code detected}}
+ log();
+ if (a > b)
+ return a;
+ return b;
+}
+
+int maxClone(int a, int b) { // no-note (converted into event)
+ log();
+ if (a > b)
+ return a;
+ return b;
+}
+
+// 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>event</string>
+// CHECK-NEXT: <key>location</key>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>13</integer>
+// CHECK-NEXT: <key>col</key><integer>28</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>28</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>18</integer>
+// CHECK-NEXT: <key>col</key><integer>1</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>Similar code here</string>
+// CHECK-NEXT: <key>message</key>
+// CHECK-NEXT: <string>Similar code here</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>6</integer>
+// CHECK-NEXT: <key>col</key><integer>23</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>6</integer>
+// CHECK-NEXT: <key>col</key><integer>23</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>11</integer>
+// CHECK-NEXT: <key>col</key><integer>1</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>Duplicate code detected</string>
+// CHECK-NEXT: <key>message</key>
+// CHECK-NEXT: <string>Duplicate code detected</string>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: <key>description</key><string>Duplicate code detected</string>
+// CHECK-NEXT: <key>category</key><string>Code clone</string>
+// CHECK-NEXT: <key>type</key><string>Exact code clone</string>
+// CHECK-NEXT: <key>check_name</key><string>alpha.clone.CloneChecker</string>
+// CHECK-NEXT: <!-- This hash is experimental and going to change! -->
+// CHECK-NEXT: <key>issue_hash_content_of_line_in_context</key><string>3d15184f38c5fa57e479b744fe3f5035</string>
+// CHECK-NEXT: <key>location</key>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>6</integer>
+// CHECK-NEXT: <key>col</key><integer>23</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
Added: cfe/trunk/test/Analysis/copypaste/plist-diagnostics.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Analysis/copypaste/plist-diagnostics.cpp?rev=283094&view=auto
==============================================================================
--- cfe/trunk/test/Analysis/copypaste/plist-diagnostics.cpp (added)
+++ cfe/trunk/test/Analysis/copypaste/plist-diagnostics.cpp Mon Oct 3 03:11:50 2016
@@ -0,0 +1,71 @@
+// RUN: %clang_cc1 -analyze -analyzer-output=plist -o %t.plist -std=c++11 -analyzer-checker=alpha.clone.CloneChecker -verify %s
+// RUN: FileCheck --input-file=%t.plist %s
+
+void log();
+
+int max(int a, int b) { // expected-warning{{Duplicate code detected}}
+ log();
+ if (a > b)
+ return a;
+ return b;
+}
+
+int maxClone(int a, int b) { // expected-note{{Similar code here}}
+ log();
+ if (a > b)
+ return a;
+ return b;
+}
+
+// FIXME: This plist output doesn't include the extra note on line 13.
+// It should be updated once the format for extra notes in plists is defined.
+
+// 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>event</string>
+// CHECK-NEXT: <key>location</key>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>6</integer>
+// CHECK-NEXT: <key>col</key><integer>23</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>6</integer>
+// CHECK-NEXT: <key>col</key><integer>23</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>11</integer>
+// CHECK-NEXT: <key>col</key><integer>1</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>Duplicate code detected</string>
+// CHECK-NEXT: <key>message</key>
+// CHECK-NEXT: <string>Duplicate code detected</string>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
+// CHECK-NEXT: <key>description</key><string>Duplicate code detected</string>
+// CHECK-NEXT: <key>category</key><string>Code clone</string>
+// CHECK-NEXT: <key>type</key><string>Exact code clone</string>
+// CHECK-NEXT: <key>check_name</key><string>alpha.clone.CloneChecker</string>
+// CHECK-NEXT: <!-- This hash is experimental and going to change! -->
+// CHECK-NEXT: <key>issue_hash_content_of_line_in_context</key><string>3d15184f38c5fa57e479b744fe3f5035</string>
+// CHECK-NEXT: <key>location</key>
+// CHECK-NEXT: <dict>
+// CHECK-NEXT: <key>line</key><integer>6</integer>
+// CHECK-NEXT: <key>col</key><integer>23</integer>
+// CHECK-NEXT: <key>file</key><integer>0</integer>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </dict>
+// CHECK-NEXT: </array>
Modified: cfe/trunk/test/Analysis/copypaste/sub-sequences.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Analysis/copypaste/sub-sequences.cpp?rev=283094&r1=283093&r2=283094&view=diff
==============================================================================
--- cfe/trunk/test/Analysis/copypaste/sub-sequences.cpp (original)
+++ cfe/trunk/test/Analysis/copypaste/sub-sequences.cpp Mon Oct 3 03:11:50 2016
@@ -7,14 +7,14 @@ void log();
int max(int a, int b) {
log2(a);
- log(); // expected-warning{{Detected code clone.}}
+ log(); // expected-warning{{Duplicate code detected}}
if (a > b)
return a;
return b;
}
int maxClone(int a, int b) {
- log(); // expected-note{{Related code clone is here.}}
+ log(); // expected-note{{Similar code here}}
if (a > b)
return a;
return b;
Modified: cfe/trunk/test/Analysis/copypaste/suspicious-clones.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Analysis/copypaste/suspicious-clones.cpp?rev=283094&r1=283093&r2=283094&view=diff
==============================================================================
--- cfe/trunk/test/Analysis/copypaste/suspicious-clones.cpp (original)
+++ cfe/trunk/test/Analysis/copypaste/suspicious-clones.cpp Mon Oct 3 03:11:50 2016
@@ -8,14 +8,14 @@ int max(int a, int b) {
log();
if (a > b)
return a;
- return b; // expected-note{{suggestion is based on the usage of this variable in a similar piece of code}}
+ return b; // expected-note{{Similar code using 'b' here}}
}
int maxClone(int x, int y, int z) {
log();
if (x > y)
return x;
- return z; // expected-warning{{suspicious code clone detected; did you mean to use 'y'?}}
+ return z; // expected-warning{{Potential copy-paste error; did you really mean to use 'z' here?}}
}
// Tests finding a suspicious clone that references global variables.
@@ -33,7 +33,7 @@ void busyIncrement() {
while (true) {
if (m1.try_lock()) {
++i;
- m1.unlock(); // expected-note{{suggestion is based on the usage of this variable in a similar piece of code}}
+ m1.unlock(); // expected-note{{Similar code using 'm1' here}}
if (i > 1000) {
return;
}
@@ -45,7 +45,7 @@ void faultyBusyIncrement() {
while (true) {
if (m1.try_lock()) {
++i;
- m2.unlock(); // expected-warning{{suspicious code clone detected; did you mean to use 'm1'?}}
+ m2.unlock(); // expected-warning{{Potential copy-paste error; did you really mean to use 'm2' here?}}
if (i > 1000) {
return;
}
@@ -58,14 +58,14 @@ void faultyBusyIncrement() {
int foo(int a, int b, int c) {
a += b + c;
b /= a + b;
- c -= b * a; // expected-warning{{suspicious code clone detected; did you mean to use 'a'?}}
+ c -= b * a; // expected-warning{{Potential copy-paste error; did you really mean to use 'b' here?}}
return c;
}
int fooClone(int a, int b, int c) {
a += b + c;
b /= a + b;
- c -= a * a; // expected-note{{suggestion is based on the usage of this variable in a similar piece of code; did you mean to use 'b'?}}
+ c -= a * a; // expected-note{{Similar code using 'a' here}}
return c;
}
@@ -77,21 +77,21 @@ int fooClone(int a, int b, int c) {
long bar1(long a, long b, long c, long d) {
c = a - b;
c = c / d * a;
- d = b * b - c; // expected-warning{{suspicious code clone detected; did you mean to use 'c'?}}
+ d = b * b - c; // expected-warning{{Potential copy-paste error; did you really mean to use 'b' here?}}
return d;
}
long bar2(long a, long b, long c, long d) {
c = a - b;
c = c / d * a;
- d = c * b - c; // expected-note{{suggestion is based on the usage of this variable in a similar piece of code; did you mean to use 'b'?}} \
- // expected-warning{{suspicious code clone detected; did you mean to use 'a'?}}
+ d = c * b - c; // expected-note{{Similar code using 'c' here}} \
+ // expected-warning{{Potential copy-paste error; did you really mean to use 'c' here?}}
return d;
}
long bar3(long a, long b, long c, long d) {
c = a - b;
c = c / d * a;
- d = a * b - c; // expected-note{{suggestion is based on the usage of this variable in a similar piece of code; did you mean to use 'c'?}}
+ d = a * b - c; // expected-note{{Similar code using 'a' here}}
return d;
}
Added: cfe/trunk/test/Analysis/copypaste/text-diagnostics.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Analysis/copypaste/text-diagnostics.cpp?rev=283094&view=auto
==============================================================================
--- cfe/trunk/test/Analysis/copypaste/text-diagnostics.cpp (added)
+++ cfe/trunk/test/Analysis/copypaste/text-diagnostics.cpp Mon Oct 3 03:11:50 2016
@@ -0,0 +1,17 @@
+// RUN: %clang_cc1 -analyze -analyzer-output=text -std=c++11 -analyzer-checker=alpha.clone.CloneChecker -verify %s
+
+void log();
+
+int max(int a, int b) { // expected-warning{{Duplicate code detected}} // expected-note{{Duplicate code detected}}
+ log();
+ if (a > b)
+ return a;
+ return b;
+}
+
+int maxClone(int a, int b) { // expected-note{{Similar code here}}
+ log();
+ if (a > b)
+ return a;
+ return b;
+}
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