1// RUN: %clang_msan -fsanitize-memory-track-origins=0 -O0 %s -o %t && env MSAN_OPTIONS=soft_rss_limit_mb=18:verbosity=1:allocator_may_return_null=1 %run %t 2>&1 | FileCheck %s -implicit-check-not="soft rss limit" -check-prefixes=CHECK,NOORIG
2// RUN: %clang_msan -fsanitize-memory-track-origins=2 -O0 %s -o %t && env MSAN_OPTIONS=soft_rss_limit_mb=36:verbosity=1:allocator_may_return_null=1 %run %t 2>&1 | FileCheck %s -implicit-check-not="soft rss limit" -check-prefixes=CHECK,ORIGIN
3
4#include <assert.h>
5#include <sanitizer/allocator_interface.h>
6#include <stdio.h>
7#include <stdlib.h>
8#include <string.h>
9#include <unistd.h>
10
11void *p;
12
13int main(int argc, char **argv) {
14 int s = 20 * 1024 * 1024;
15 fprintf(stderr, format: "malloc\n");
16 p = malloc(size: s);
17 sleep(seconds: 1);
18 fprintf(stderr, format: "memset\n");
19 memset(s: p, c: 1, n: s);
20 sleep(seconds: 1);
21 fprintf(stderr, format: "free\n");
22 free(ptr: p);
23 sleep(seconds: 1);
24 return 0;
25}
26
27// CHECK-LABEL: malloc
28
29// Non origin mode allocate ~20M for shadow.
30// Origin mode allocate ~20M for shadow and ~20M for origin.
31// CHECK: soft rss limit exhausted
32
33// CHECK-LABEL: memset
34
35// Memset reserve modified pages, frees ~20M for shadow. So not change in RSS for non-origin mode.
36// Origin mode also frees ~20M of origins, so 'unexhausted'.
37// ORIGIN: soft rss limit unexhausted
38
39// CHECK-LABEL: free
40
41// Now non-origin release all everything.
42// NOORIG: soft rss limit unexhausted
43

source code of compiler-rt/test/msan/release_origin.c