llvm-for-llvmta/tools/clang/test/Analysis/stack-frame-context-revisio...

38 lines
1001 B
C++
Raw Normal View History

2022-04-25 13:02:35 +02:00
// RUN: %clang_analyze_cc1 -std=c++14 -analyzer-checker=core,cplusplus.NewDelete -verify %s
// expected-no-diagnostics:
// From now the profile of the 'StackFrameContext' also contains the
// 'NodeBuilderContext::blockCount()'. With this addition we can distinguish
// between the 'StackArgumentsSpaceRegion' of the 'P' arguments being different
// on every iteration.
typedef __INTPTR_TYPE__ intptr_t;
template <typename PointerTy>
struct SmarterPointer {
PointerTy getFromVoidPointer(void *P) const {
return static_cast<PointerTy>(P);
}
PointerTy getPointer() const {
return getFromVoidPointer(reinterpret_cast<void *>(Value));
}
intptr_t Value = 13;
};
struct Node {
SmarterPointer<Node *> Pred;
};
void test(Node *N) {
while (N) {
SmarterPointer<Node *> Next = N->Pred;
delete N;
N = Next.getPointer();
// no-warning: 'Use of memory after it is freed' was here as the same
// 'StackArgumentsSpaceRegion' purged out twice as 'P'.
}
}