1#include "jemalloc/internal/jemalloc_preamble.h"
2#include "jemalloc/internal/jemalloc_internal_includes.h"
3
4static safety_check_abort_hook_t safety_check_abort;
5
6void safety_check_fail_sized_dealloc(bool current_dealloc, const void *ptr,
7 size_t true_size, size_t input_size) {
8 char *src = current_dealloc ? "the current pointer being freed" :
9 "in thread cache, possibly from previous deallocations";
10
11 safety_check_fail("<jemalloc>: size mismatch detected (true size %zu "
12 "vs input size %zu), likely caused by application sized "
13 "deallocation bugs (source address: %p, %s). Suggest building with "
14 "--enable-debug or address sanitizer for debugging. Abort.\n",
15 true_size, input_size, ptr, src);
16}
17
18void safety_check_set_abort(safety_check_abort_hook_t abort_fn) {
19 safety_check_abort = abort_fn;
20}
21
22void safety_check_fail(const char *format, ...) {
23 char buf[MALLOC_PRINTF_BUFSIZE];
24
25 va_list ap;
26 va_start(ap, format);
27 malloc_vsnprintf(buf, MALLOC_PRINTF_BUFSIZE, format, ap);
28 va_end(ap);
29
30 if (safety_check_abort == NULL) {
31 malloc_write(buf);
32 abort();
33 } else {
34 safety_check_abort(buf);
35 }
36}
37