Author: Donát Nagy Date: 2024-07-02T10:27:45+02:00 New Revision: fdcfb277465e4530e5837fb8a95031794e58cb9b
URL: https://github.com/llvm/llvm-project/commit/fdcfb277465e4530e5837fb8a95031794e58cb9b DIFF: https://github.com/llvm/llvm-project/commit/fdcfb277465e4530e5837fb8a95031794e58cb9b.diff LOG: [clang-tidy] Clarify diagnostics of bugprone-sizeof-expression (#95550) … because they were strangely worded and in a few cases outright incorrect. Added: Modified: clang-tools-extra/clang-tidy/bugprone/SizeofExpressionCheck.cpp clang-tools-extra/docs/ReleaseNotes.rst clang-tools-extra/test/clang-tidy/checkers/bugprone/sizeof-expression-2.c clang-tools-extra/test/clang-tidy/checkers/bugprone/sizeof-expression-any-pointer.cpp clang-tools-extra/test/clang-tidy/checkers/bugprone/sizeof-expression-warn-on-sizeof-pointer-to-aggregate.cpp clang-tools-extra/test/clang-tidy/checkers/bugprone/sizeof-expression.cpp Removed: ################################################################################ diff --git a/clang-tools-extra/clang-tidy/bugprone/SizeofExpressionCheck.cpp b/clang-tools-extra/clang-tidy/bugprone/SizeofExpressionCheck.cpp index c25ee42d0899a..d517e8473d94a 100644 --- a/clang-tools-extra/clang-tidy/bugprone/SizeofExpressionCheck.cpp +++ b/clang-tools-extra/clang-tidy/bugprone/SizeofExpressionCheck.cpp @@ -296,7 +296,7 @@ void SizeofExpressionCheck::check(const MatchFinder::MatchResult &Result) { } else if (const auto *E = Result.Nodes.getNodeAs<Expr>("sizeof-integer-call")) { diag(E->getBeginLoc(), "suspicious usage of 'sizeof()' on an expression " - "that results in an integer") + "of integer type") << E->getSourceRange(); } else if (const auto *E = Result.Nodes.getNodeAs<Expr>("sizeof-this")) { diag(E->getBeginLoc(), @@ -314,7 +314,7 @@ void SizeofExpressionCheck::check(const MatchFinder::MatchResult &Result) { << E->getSourceRange(); } else { diag(E->getBeginLoc(), "suspicious usage of 'sizeof()' on an expression " - "that results in a pointer") + "of pointer type") << E->getSourceRange(); } } else if (const auto *E = Result.Nodes.getNodeAs<BinaryOperator>( @@ -348,25 +348,28 @@ void SizeofExpressionCheck::check(const MatchFinder::MatchResult &Result) { } else if (ElementSize > CharUnits::Zero() && DenominatorSize > CharUnits::Zero() && ElementSize != DenominatorSize) { - diag(E->getOperatorLoc(), "suspicious usage of 'sizeof(...)/sizeof(...)';" - " numerator is not a multiple of denominator") + // FIXME: Apparently there are no testcases that cover this branch! + diag(E->getOperatorLoc(), + "suspicious usage of 'sizeof(array)/sizeof(...)';" + " denominator diff ers from the size of array elements") << E->getLHS()->getSourceRange() << E->getRHS()->getSourceRange(); } else if (NumTy && DenomTy && NumTy == DenomTy) { - // FIXME: This message is wrong, it should not refer to sizeof "pointer" - // usage (and by the way, it would be to clarify all the messages). diag(E->getOperatorLoc(), - "suspicious usage of sizeof pointer 'sizeof(T)/sizeof(T)'") + "suspicious usage of 'sizeof(...)/sizeof(...)'; both expressions " + "have the same type") << E->getLHS()->getSourceRange() << E->getRHS()->getSourceRange(); } else if (!WarnOnSizeOfPointer) { // When 'WarnOnSizeOfPointer' is enabled, these messages become redundant: if (PointedTy && DenomTy && PointedTy == DenomTy) { diag(E->getOperatorLoc(), - "suspicious usage of sizeof pointer 'sizeof(T*)/sizeof(T)'") + "suspicious usage of 'sizeof(...)/sizeof(...)'; size of pointer " + "is divided by size of pointed type") << E->getLHS()->getSourceRange() << E->getRHS()->getSourceRange(); } else if (NumTy && DenomTy && NumTy->isPointerType() && DenomTy->isPointerType()) { diag(E->getOperatorLoc(), - "suspicious usage of sizeof pointer 'sizeof(P*)/sizeof(Q*)'") + "suspicious usage of 'sizeof(...)/sizeof(...)'; both expressions " + "have pointer types") << E->getLHS()->getSourceRange() << E->getRHS()->getSourceRange(); } } diff --git a/clang-tools-extra/docs/ReleaseNotes.rst b/clang-tools-extra/docs/ReleaseNotes.rst index 4d2cd0a9621ba..fe819731f38b9 100644 --- a/clang-tools-extra/docs/ReleaseNotes.rst +++ b/clang-tools-extra/docs/ReleaseNotes.rst @@ -241,10 +241,10 @@ Changes in existing checks false positives resulting from use of optionals in unevaluated context. - Improved :doc:`bugprone-sizeof-expression - <clang-tidy/checks/bugprone/sizeof-expression>` check by eliminating some - false positives and adding a new (off-by-default) option - `WarnOnSizeOfPointer` that reports all ``sizeof(pointer)`` expressions - (except for a few that are idiomatic). + <clang-tidy/checks/bugprone/sizeof-expression>` check by clarifying the + diagnostics, eliminating some false positives and adding a new + (off-by-default) option `WarnOnSizeOfPointer` that reports all + ``sizeof(pointer)`` expressions (except for a few that are idiomatic). - Improved :doc:`bugprone-suspicious-include <clang-tidy/checks/bugprone/suspicious-include>` check by replacing the local diff --git a/clang-tools-extra/test/clang-tidy/checkers/bugprone/sizeof-expression-2.c b/clang-tools-extra/test/clang-tidy/checkers/bugprone/sizeof-expression-2.c index aef930f2c8fda..b898071a56613 100644 --- a/clang-tools-extra/test/clang-tidy/checkers/bugprone/sizeof-expression-2.c +++ b/clang-tools-extra/test/clang-tidy/checkers/bugprone/sizeof-expression-2.c @@ -34,24 +34,24 @@ int Test5() { int sum = 0; sum += sizeof(&S); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(__typeof(&S)); sum += sizeof(&TS); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(__typeof(&TS)); sum += sizeof(STRKWD MyStruct*); sum += sizeof(__typeof(STRKWD MyStruct*)); sum += sizeof(TypedefStruct*); sum += sizeof(__typeof(TypedefStruct*)); sum += sizeof(PTTS); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(PMyStruct); sum += sizeof(PS); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(PS2); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(&A10); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type #ifdef __cplusplus MyStruct &rS = S; diff --git a/clang-tools-extra/test/clang-tidy/checkers/bugprone/sizeof-expression-any-pointer.cpp b/clang-tools-extra/test/clang-tidy/checkers/bugprone/sizeof-expression-any-pointer.cpp index bfb2ec3a9eb02..4c65d253baefd 100644 --- a/clang-tools-extra/test/clang-tidy/checkers/bugprone/sizeof-expression-any-pointer.cpp +++ b/clang-tools-extra/test/clang-tidy/checkers/bugprone/sizeof-expression-any-pointer.cpp @@ -38,17 +38,17 @@ int Test1(const char* ptr) { sum += sizeof(sum, LEN); // CHECK-MESSAGES: :[[@LINE-1]]:20: warning: suspicious usage of 'sizeof(..., ...)' sum += sizeof(AsBool()); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in an integer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of integer type sum += sizeof(AsInt()); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in an integer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of integer type sum += sizeof(AsEnum()); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in an integer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of integer type sum += sizeof(AsEnumClass()); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in an integer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of integer type sum += sizeof(M{}.AsInt()); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in an integer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of integer type sum += sizeof(M{}.AsEnum()); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in an integer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of integer type sum += sizeof(sizeof(X)); // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof(sizeof(...))' sum += sizeof(LEN + sizeof(X)); @@ -62,7 +62,7 @@ int Test1(const char* ptr) { sum += sizeof(LEN + - + -sizeof(X)); // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof(sizeof(...))' sum += sizeof(char) / sizeof(char); - // CHECK-MESSAGES: :[[@LINE-1]]:23: warning: suspicious usage of sizeof pointer 'sizeof(T)/sizeof(T)' + // CHECK-MESSAGES: :[[@LINE-1]]:23: warning: suspicious usage of 'sizeof(...)/sizeof(...)'; both expressions have the same type sum += sizeof(A) / sizeof(S); // CHECK-MESSAGES: :[[@LINE-1]]:20: warning: suspicious usage of 'sizeof(...)/sizeof(...)'; numerator is not a multiple of denominator sum += sizeof(char) / sizeof(int); @@ -72,21 +72,21 @@ int Test1(const char* ptr) { sum += sizeof(B[0]) / sizeof(A); // CHECK-MESSAGES: :[[@LINE-1]]:23: warning: suspicious usage of 'sizeof(...)/sizeof(...)'; numerator is not a multiple of denominator sum += sizeof(ptr) / sizeof(char); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(ptr) / sizeof(ptr[0]); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(ptr) / sizeof(char*); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(ptr) / sizeof(void*); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(ptr) / sizeof(const void volatile*); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(ptr) / sizeof(char); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(int) * sizeof(char); // CHECK-MESSAGES: :[[@LINE-1]]:22: warning: suspicious 'sizeof' by 'sizeof' multiplication sum += sizeof(ptr) * sizeof(ptr[0]); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type // CHECK-MESSAGES: :[[@LINE-2]]:22: warning: suspicious 'sizeof' by 'sizeof' multiplication sum += sizeof(int) * (2 * sizeof(char)); // CHECK-MESSAGES: :[[@LINE-1]]:22: warning: suspicious 'sizeof' by 'sizeof' multiplication @@ -127,54 +127,54 @@ int Test5() { int sum = 0; sum += sizeof(&S.arr); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(&kGlocalMyStruct.arr); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(&kGlocalMyStructPtr->arr); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(S.arr + 0); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(+ S.arr); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof((int*)S.arr); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(S.ptr); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(kGlocalMyStruct.ptr); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(kGlocalMyStructPtr->ptr); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(&kGlocalMyStruct); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(&S); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(MyStruct*); sum += sizeof(PMyStruct); sum += sizeof(PS); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(PS2); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(&A10); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(PtrArray) / sizeof(PtrArray[1]); - // CHECK-MESSAGES: :[[@LINE-1]]:29: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:29: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(A10) / sizeof(PtrArray[0]); sum += sizeof(PC) / sizeof(PtrArray[0]); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer - // CHECK-MESSAGES: :[[@LINE-2]]:21: warning: suspicious usage of sizeof pointer 'sizeof(T)/sizeof(T)' + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type + // CHECK-MESSAGES: :[[@LINE-2]]:21: warning: suspicious usage of 'sizeof(...)/sizeof(...)'; both expressions have the same type sum += sizeof(ArrayC) / sizeof(PtrArray[0]); // CHECK-MESSAGES: :[[@LINE-1]]:25: warning: suspicious usage of 'sizeof(...)/sizeof(...)'; numerator is not a multiple of denominator sum += sizeof(PChar); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(PInt); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(PPInt); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(PPMyStruct); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type return sum; } @@ -200,9 +200,9 @@ void GenericFunctionTest() { // reported by the `sizeof(pointer)` checks, but this causes some false // positives, so it would be good to create an exception for them. some_generic_function(&IntPP, sizeof(IntP)); - // CHECK-MESSAGES: :[[@LINE-1]]:33: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:33: warning: suspicious usage of 'sizeof()' on an expression of pointer type some_generic_function(&ClassPP, sizeof(ClassP)); - // CHECK-MESSAGES: :[[@LINE-1]]:35: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:35: warning: suspicious usage of 'sizeof()' on an expression of pointer type } int ValidExpressions() { @@ -222,7 +222,7 @@ int ValidExpressions() { sum += sizeof(A[sizeof(A) / sizeof(int)]); // Here the outer sizeof is reported, but the inner ones are accepted: sum += sizeof(&A[sizeof(A) / sizeof(int)]); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(sizeof(0)); // Special case: sizeof size_t. sum += sizeof(void*); sum += sizeof(void const *); diff --git a/clang-tools-extra/test/clang-tidy/checkers/bugprone/sizeof-expression-warn-on-sizeof-pointer-to-aggregate.cpp b/clang-tools-extra/test/clang-tidy/checkers/bugprone/sizeof-expression-warn-on-sizeof-pointer-to-aggregate.cpp index 5ef2c46ffbdf1..5c6b728efcee9 100644 --- a/clang-tools-extra/test/clang-tidy/checkers/bugprone/sizeof-expression-warn-on-sizeof-pointer-to-aggregate.cpp +++ b/clang-tools-extra/test/clang-tidy/checkers/bugprone/sizeof-expression-warn-on-sizeof-pointer-to-aggregate.cpp @@ -68,7 +68,7 @@ int Test5() { sum += sizeof(A10) / sizeof(PtrArray[0]); // No warning. sum += sizeof(PC) / sizeof(PtrArray[0]); - // CHECK-MESSAGES: :[[@LINE-1]]:21: warning: suspicious usage of sizeof pointer 'sizeof(T)/sizeof(T)' + // CHECK-MESSAGES: :[[@LINE-1]]:21: warning: suspicious usage of 'sizeof(...)/sizeof(...)'; both expressions have the same type sum += sizeof(ArrayC) / sizeof(PtrArray[0]); // CHECK-MESSAGES: :[[@LINE-1]]:25: warning: suspicious usage of 'sizeof(...)/sizeof(...)'; numerator is not a multiple of denominator diff --git a/clang-tools-extra/test/clang-tidy/checkers/bugprone/sizeof-expression.cpp b/clang-tools-extra/test/clang-tidy/checkers/bugprone/sizeof-expression.cpp index 064f31cb08c6b..671fd8370894f 100644 --- a/clang-tools-extra/test/clang-tidy/checkers/bugprone/sizeof-expression.cpp +++ b/clang-tools-extra/test/clang-tidy/checkers/bugprone/sizeof-expression.cpp @@ -48,13 +48,13 @@ bool TestTrait2() { template <class T> bool TestTrait3() { return sizeof(ReturnOverload(0)) == sizeof(T{}); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in an integer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of integer type } template <class T> bool TestTrait4() { return sizeof(ReturnTemplate(0)) == sizeof(T{}); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in an integer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of integer type } bool TestTemplates() { @@ -79,17 +79,17 @@ int Test1(const char* ptr) { sum += sizeof(sum, LEN); // CHECK-MESSAGES: :[[@LINE-1]]:20: warning: suspicious usage of 'sizeof(..., ...)' sum += sizeof(AsBool()); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in an integer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of integer type sum += sizeof(AsInt()); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in an integer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of integer type sum += sizeof(AsEnum()); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in an integer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of integer type sum += sizeof(AsEnumClass()); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in an integer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of integer type sum += sizeof(M{}.AsInt()); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in an integer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of integer type sum += sizeof(M{}.AsEnum()); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in an integer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of integer type sum += sizeof(sizeof(X)); // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof(sizeof(...))' sum += sizeof(LEN + sizeof(X)); @@ -103,7 +103,7 @@ int Test1(const char* ptr) { sum += sizeof(LEN + - + -sizeof(X)); // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof(sizeof(...))' sum += sizeof(char) / sizeof(char); - // CHECK-MESSAGES: :[[@LINE-1]]:23: warning: suspicious usage of sizeof pointer 'sizeof(T)/sizeof(T)' + // CHECK-MESSAGES: :[[@LINE-1]]:23: warning: suspicious usage of 'sizeof(...)/sizeof(...)'; both expressions have the same type sum += sizeof(A) / sizeof(S); // CHECK-MESSAGES: :[[@LINE-1]]:20: warning: suspicious usage of 'sizeof(...)/sizeof(...)'; numerator is not a multiple of denominator sum += sizeof(char) / sizeof(int); @@ -113,17 +113,17 @@ int Test1(const char* ptr) { sum += sizeof(B[0]) / sizeof(A); // CHECK-MESSAGES: :[[@LINE-1]]:23: warning: suspicious usage of 'sizeof(...)/sizeof(...)'; numerator is not a multiple of denominator sum += sizeof(ptr) / sizeof(char); - // CHECK-MESSAGES: :[[@LINE-1]]:22: warning: suspicious usage of sizeof pointer 'sizeof(T*)/sizeof(T)' + // CHECK-MESSAGES: :[[@LINE-1]]:22: warning: suspicious usage of 'sizeof(...)/sizeof(...)'; size of pointer is divided by size of pointed type sum += sizeof(ptr) / sizeof(ptr[0]); - // CHECK-MESSAGES: :[[@LINE-1]]:22: warning: suspicious usage of sizeof pointer 'sizeof(T*)/sizeof(T)' + // CHECK-MESSAGES: :[[@LINE-1]]:22: warning: suspicious usage of 'sizeof(...)/sizeof(...)'; size of pointer is divided by size of pointed type sum += sizeof(ptr) / sizeof(char*); - // CHECK-MESSAGES: :[[@LINE-1]]:22: warning: suspicious usage of sizeof pointer 'sizeof(P*)/sizeof(Q*)' + // CHECK-MESSAGES: :[[@LINE-1]]:22: warning: suspicious usage of 'sizeof(...)/sizeof(...)'; both expressions have pointer types sum += sizeof(ptr) / sizeof(void*); - // CHECK-MESSAGES: :[[@LINE-1]]:22: warning: suspicious usage of sizeof pointer 'sizeof(P*)/sizeof(Q*)' + // CHECK-MESSAGES: :[[@LINE-1]]:22: warning: suspicious usage of 'sizeof(...)/sizeof(...)'; both expressions have pointer types sum += sizeof(ptr) / sizeof(const void volatile*); - // CHECK-MESSAGES: :[[@LINE-1]]:22: warning: suspicious usage of sizeof pointer 'sizeof(P*)/sizeof(Q*)' + // CHECK-MESSAGES: :[[@LINE-1]]:22: warning: suspicious usage of 'sizeof(...)/sizeof(...)'; both expressions have pointer types sum += sizeof(ptr) / sizeof(char); - // CHECK-MESSAGES: :[[@LINE-1]]:22: warning: suspicious usage of sizeof pointer 'sizeof(T*)/sizeof(T)' + // CHECK-MESSAGES: :[[@LINE-1]]:22: warning: suspicious usage of 'sizeof(...)/sizeof(...)'; size of pointer is divided by size of pointed type sum += sizeof(int) * sizeof(char); // CHECK-MESSAGES: :[[@LINE-1]]:22: warning: suspicious 'sizeof' by 'sizeof' multiplication sum += sizeof(ptr) * sizeof(ptr[0]); @@ -156,11 +156,11 @@ int CE4 = sizeof sizeof(MyConstChar); int Test2(MyConstChar* A) { int sum = 0; sum += sizeof(MyConstChar) / sizeof(char); - // CHECK-MESSAGES: :[[@LINE-1]]:30: warning: suspicious usage of sizeof pointer 'sizeof(T)/sizeof(T)' + // CHECK-MESSAGES: :[[@LINE-1]]:30: warning: suspicious usage of 'sizeof(...)/sizeof(...)'; both expressions have the same type sum += sizeof(MyConstChar) / sizeof(MyChar); - // CHECK-MESSAGES: :[[@LINE-1]]:30: warning: suspicious usage of sizeof pointer 'sizeof(T)/sizeof(T)' + // CHECK-MESSAGES: :[[@LINE-1]]:30: warning: suspicious usage of 'sizeof(...)/sizeof(...)'; both expressions have the same type sum += sizeof(A[0]) / sizeof(char); - // CHECK-MESSAGES: :[[@LINE-1]]:23: warning: suspicious usage of sizeof pointer 'sizeof(T)/sizeof(T)' + // CHECK-MESSAGES: :[[@LINE-1]]:23: warning: suspicious usage of 'sizeof(...)/sizeof(...)'; both expressions have the same type return sum; } @@ -169,7 +169,7 @@ int Foo() { int A[T]; return sizeof(T); } // CHECK-MESSAGES: :[[@LINE-1]]:30: warning: suspicious usage of 'sizeof(K)' template <typename T> int Bar() { T A[5]; return sizeof(A[0]) / sizeof(T); } -// CHECK-MESSAGES: :[[@LINE-1]]:41: warning: suspicious usage of sizeof pointer 'sizeof(T)/sizeof(T)' +// CHECK-MESSAGES: :[[@LINE-1]]:41: warning: suspicious usage of 'sizeof(...)/sizeof(...)'; both expressions have the same type int Test3() { return Foo<42>() + Bar<char>(); } static const char* kABC = "abc"; @@ -211,43 +211,43 @@ int Test5() { int sum = 0; sum += sizeof(&S.arr); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(&kGlocalMyStruct.arr); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(&kGlocalMyStructPtr->arr); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(S.arr + 0); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(+ S.arr); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof((int*)S.arr); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(S.ptr); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(kGlocalMyStruct.ptr); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(kGlocalMyStructPtr->ptr); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(&kGlocalMyStruct); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(&S); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(MyStruct*); sum += sizeof(PMyStruct); sum += sizeof(PS); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(PS2); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(&A10); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(PtrArray) / sizeof(PtrArray[1]); - // CHECK-MESSAGES: :[[@LINE-1]]:29: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:29: warning: suspicious usage of 'sizeof()' on an expression of pointer type sum += sizeof(A10) / sizeof(PtrArray[0]); sum += sizeof(PC) / sizeof(PtrArray[0]); - // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer - // CHECK-MESSAGES: :[[@LINE-2]]:21: warning: suspicious usage of sizeof pointer 'sizeof(T)/sizeof(T)' + // CHECK-MESSAGES: :[[@LINE-1]]:10: warning: suspicious usage of 'sizeof()' on an expression of pointer type + // CHECK-MESSAGES: :[[@LINE-2]]:21: warning: suspicious usage of 'sizeof(...)/sizeof(...)'; both expressions have the same type sum += sizeof(ArrayC) / sizeof(PtrArray[0]); // CHECK-MESSAGES: :[[@LINE-1]]:25: warning: suspicious usage of 'sizeof(...)/sizeof(...)'; numerator is not a multiple of denominator @@ -321,7 +321,7 @@ void GenericFunctionTest() { // NOTE: `sizeof(IntP)` is only reported with `WarnOnSizeOfPointer=true`. some_generic_function(&IntPP, sizeof(IntP)); some_generic_function(&ClassPP, sizeof(ClassP)); - // CHECK-MESSAGES: :[[@LINE-1]]:35: warning: suspicious usage of 'sizeof()' on an expression that results in a pointer + // CHECK-MESSAGES: :[[@LINE-1]]:35: warning: suspicious usage of 'sizeof()' on an expression of pointer type } int ValidExpressions() { _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits