forked from OSchip/llvm-project
37 lines
840 B
C++
37 lines
840 B
C++
// RUN: %clangxx_msan -O2 %s -o %t
|
|
// RUN: %t 2>&1 | FileCheck %s
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
extern "C" {
|
|
int __msan_get_ownership(const void *p);
|
|
|
|
void *global_ptr;
|
|
|
|
// Note: avoid calling functions that allocate memory in malloc/free
|
|
// to avoid infinite recursion.
|
|
void __msan_malloc_hook(void *ptr, size_t sz) {
|
|
if (__msan_get_ownership(ptr)) {
|
|
write(1, "MallocHook\n", sizeof("MallocHook\n"));
|
|
global_ptr = ptr;
|
|
}
|
|
}
|
|
void __msan_free_hook(void *ptr) {
|
|
if (__msan_get_ownership(ptr) && ptr == global_ptr)
|
|
write(1, "FreeHook\n", sizeof("FreeHook\n"));
|
|
}
|
|
} // extern "C"
|
|
|
|
int main() {
|
|
volatile int *x = new int;
|
|
// CHECK: MallocHook
|
|
// Check that malloc hook was called with correct argument.
|
|
if (global_ptr != (void*)x) {
|
|
_exit(1);
|
|
}
|
|
*x = 0;
|
|
delete x;
|
|
// CHECK: FreeHook
|
|
return 0;
|
|
}
|