1 // Build a library with origin tracking and an executable w/o origin tracking.
2 // Test that origin tracking is enabled at runtime.
3 // RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -DBUILD_SO -fPIC -shared -o %t-so.so
4 // RUN: %clangxx_msan -O0 %s %t-so.so -o %t && not %run %t 2>&1 | FileCheck %s
5
6 #ifdef BUILD_SO
7
8 #include <stdlib.h>
9
10 extern "C" {
my_access(int * p)11 void my_access(int *p) {
12 volatile int tmp;
13 // Force initialize-ness check.
14 if (*p)
15 tmp = 1;
16 }
17
my_alloc(unsigned sz)18 void *my_alloc(unsigned sz) {
19 return malloc(sz);
20 }
21 } // extern "C"
22
23 #else // BUILD_SO
24
25 #include <stdlib.h>
26
27 extern "C" {
28 void my_access(int *p);
29 void *my_alloc(unsigned sz);
30 }
31
main(int argc,char ** argv)32 int main(int argc, char **argv) {
33 int *x = (int *)my_alloc(sizeof(int));
34 my_access(x);
35 delete x;
36
37 // CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value
38 // CHECK: {{#0 0x.* in my_access .*dso-origin.cc:}}
39 // CHECK: {{#1 0x.* in main .*dso-origin.cc:}}[[@LINE-5]]
40 // CHECK: Uninitialized value was created by a heap allocation
41 // CHECK: {{#0 0x.* in .*malloc}}
42 // CHECK: {{#1 0x.* in my_alloc .*dso-origin.cc:}}
43 // CHECK: {{#2 0x.* in main .*dso-origin.cc:}}[[@LINE-10]]
44 // CHECK: SUMMARY: MemorySanitizer: use-of-uninitialized-value {{.*dso-origin.cc:.* my_access}}
45 return 0;
46 }
47
48 #endif // BUILD_SO
49