llvm-project/compiler-rt/test/gwp_asan/backtrace.c

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// REQUIRES: gwp_asan
// RUN: %clang_gwp_asan -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer %s -g -o %t
// RUN: %expect_crash %t 2>&1 | FileCheck %s
// Ensure we don't crash when using the unwinder when frame pointers are
// disabled.
// RUN: %clang_gwp_asan -fomit-frame-pointer -momit-leaf-frame-pointer %s -g -o %t
// RUN: %expect_crash %t
#include <stdlib.h>
__attribute__((noinline)) void *allocate_mem() { return malloc(1); }
__attribute__((noinline)) void free_mem(void *ptr) { free(ptr); }
__attribute__((noinline)) void touch_mem(void *ptr) {
volatile char sink = *((volatile char *)ptr);
}
// CHECK: Use After Free
// CHECK: touch_mem
// CHECK: was deallocated
// CHECK: free_mem
// CHECK: was allocated
// CHECK: allocate_mem
int main() {
for (unsigned i = 0; i < 0x10000; ++i) {
void *ptr = allocate_mem();
free_mem(ptr);
touch_mem(ptr);
}
return 0;
}