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// Check that free hook doesn't conflict with Realloc.
// RUN: %clangxx_asan -O2 %s -o %t
// RUN: %run %t 2>&1 | FileCheck %s
#include <stdlib.h>
#include <unistd.h>
#include <sanitizer/allocator_interface.h>
static void *glob_ptr;
extern "C" {
void __sanitizer_free_hook(const volatile void *ptr) {
if (ptr == glob_ptr) {
*(int*)ptr = 0;
write(1, "FreeHook\n", sizeof("FreeHook\n"));
}
}
}
int main() {
int *x = (int*)malloc(100);
x[0] = 42;
glob_ptr = x;
int *y = (int*)realloc(x, 200);
// Verify that free hook was called and didn't spoil the memory.
if (y[0] != 42) {
_exit(1);
}
write(1, "Passed\n", sizeof("Passed\n"));
free(y);
// CHECK: FreeHook
// CHECK: Passed
return 0;
}
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