llvm-project/compiler-rt/test/gwp_asan/use_after_free.cpp

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// REQUIRES: gwp_asan
// RUN: %clangxx_gwp_asan %s -o %t
// RUN: %expect_crash %run %t 2>&1 | FileCheck %s
// CHECK: GWP-ASan detected a memory error
// CHECK: Use After Free at 0x{{[a-f0-9]+}} (0 bytes into a 10-byte allocation
#include <cstdlib>
int main() {
char *Ptr = reinterpret_cast<char *>(malloc(10));
for (unsigned i = 0; i < 10; ++i) {
*(Ptr + i) = 0x0;
}
free(Ptr);
volatile char x = *Ptr;
return 0;
}