1 | // RUN: %clangxx -m64 -O0 -g -xc++ %s -o %t && %run %t |
2 | // RUN: %clangxx -m64 -O3 -g -xc++ %s -o %t && %run %t |
3 | // REQUIRES: x86_64-target-arch |
4 | |
5 | #include <assert.h> |
6 | #include <stdio.h> |
7 | #include <stdlib.h> |
8 | #include <string.h> |
9 | |
10 | #include "sanitizer_common/sanitizer_specific.h" |
11 | |
12 | static void run(bool flush) { |
13 | char *buf; |
14 | size_t buf_len; |
15 | fprintf(stderr, format: " &buf %p, &buf_len %p\n" , &buf, &buf_len); |
16 | FILE *fp = open_memstream(bufloc: &buf, sizeloc: &buf_len); |
17 | fprintf(stream: fp, format: "hello" ); |
18 | if (flush) { |
19 | fflush(stream: fp); |
20 | check_mem_is_good(&buf, sizeof(buf)); |
21 | check_mem_is_good(&buf_len, sizeof(buf_len)); |
22 | check_mem_is_good(buf, buf_len); |
23 | } |
24 | |
25 | char *p = new char[1024]; |
26 | memset(s: p, c: 'a', n: 1023); |
27 | p[1023] = 0; |
28 | for (int i = 0; i < 100; ++i) |
29 | fprintf(stream: fp, format: "%s" , p); |
30 | delete[] p; |
31 | |
32 | if (flush) { |
33 | fflush(stream: fp); |
34 | fprintf(stderr, format: " %p addr %p, len %zu\n" , &buf, buf, buf_len); |
35 | check_mem_is_good(&buf, sizeof(buf)); |
36 | check_mem_is_good(&buf_len, sizeof(buf_len)); |
37 | check_mem_is_good(buf, buf_len);\ |
38 | } |
39 | |
40 | fclose(stream: fp); |
41 | check_mem_is_good(&buf, sizeof(buf)); |
42 | check_mem_is_good(&buf_len, sizeof(buf_len)); |
43 | check_mem_is_good(buf, buf_len); |
44 | |
45 | free(ptr: buf); |
46 | } |
47 | |
48 | int main(void) { |
49 | for (int i = 0; i < 100; ++i) |
50 | run(flush: false); |
51 | for (int i = 0; i < 100; ++i) |
52 | run(flush: true); |
53 | return 0; |
54 | } |
55 | |