1 // Test that on the second entry to a function the origins are still right.
2
3 // RUN: %clangxx_msan -O0 %s -o %t && not %run %t >%t.out 2>&1
4 // RUN: FileCheck %s < %t.out
5 // RUN: %clangxx_msan -O1 %s -o %t && not %run %t >%t.out 2>&1
6 // RUN: FileCheck %s < %t.out
7 // RUN: %clangxx_msan -O2 %s -o %t && not %run %t >%t.out 2>&1
8 // RUN: FileCheck %s < %t.out
9 // RUN: %clangxx_msan -O3 %s -o %t && not %run %t >%t.out 2>&1
10 // RUN: FileCheck %s < %t.out
11
12 // RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -o %t && not %run %t >%t.out 2>&1
13 // RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
14 // RUN: %clangxx_msan -fsanitize-memory-track-origins -O1 %s -o %t && not %run %t >%t.out 2>&1
15 // RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
16 // RUN: %clangxx_msan -fsanitize-memory-track-origins -O2 %s -o %t && not %run %t >%t.out 2>&1
17 // RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
18 // RUN: %clangxx_msan -fsanitize-memory-track-origins -O3 %s -o %t && not %run %t >%t.out 2>&1
19 // RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
20
21 #include <stdlib.h>
22
23 extern "C"
f(int depth)24 int f(int depth) {
25 if (depth) return f(depth - 1);
26
27 int x;
28 int *volatile p = &x;
29 return *p;
30 }
31
main(int argc,char ** argv)32 int main(int argc, char **argv) {
33 return f(1);
34 // CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value
35 // CHECK: {{#0 0x.* in main .*stack-origin2.cpp:}}[[@LINE-2]]
36
37 // CHECK-ORIGINS: Uninitialized value was created by an allocation of 'x' in the stack frame of function 'f'
38 // CHECK-ORIGINS: {{#0 0x.* in f .*stack-origin2.cpp:}}[[@LINE-14]]
39
40 // CHECK: SUMMARY: MemorySanitizer: use-of-uninitialized-value {{.*stack-origin2.cpp:.* main}}
41 }
42