1*d21b3d34SFangrui Song // Test that on the second entry to a function the origins are still right.
2*d21b3d34SFangrui Song 
3*d21b3d34SFangrui Song // RUN: %clangxx_msan -O0 %s -o %t && not %run %t >%t.out 2>&1
4*d21b3d34SFangrui Song // RUN: FileCheck %s < %t.out
5*d21b3d34SFangrui Song // RUN: %clangxx_msan -O1 %s -o %t && not %run %t >%t.out 2>&1
6*d21b3d34SFangrui Song // RUN: FileCheck %s < %t.out
7*d21b3d34SFangrui Song // RUN: %clangxx_msan -O2 %s -o %t && not %run %t >%t.out 2>&1
8*d21b3d34SFangrui Song // RUN: FileCheck %s < %t.out
9*d21b3d34SFangrui Song // RUN: %clangxx_msan -O3 %s -o %t && not %run %t >%t.out 2>&1
10*d21b3d34SFangrui Song // RUN: FileCheck %s < %t.out
11*d21b3d34SFangrui Song 
12*d21b3d34SFangrui Song // RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -o %t && not %run %t >%t.out 2>&1
13*d21b3d34SFangrui Song // RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
14*d21b3d34SFangrui Song // RUN: %clangxx_msan -fsanitize-memory-track-origins -O1 %s -o %t && not %run %t >%t.out 2>&1
15*d21b3d34SFangrui Song // RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
16*d21b3d34SFangrui Song // RUN: %clangxx_msan -fsanitize-memory-track-origins -O2 %s -o %t && not %run %t >%t.out 2>&1
17*d21b3d34SFangrui Song // RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
18*d21b3d34SFangrui Song // RUN: %clangxx_msan -fsanitize-memory-track-origins -O3 %s -o %t && not %run %t >%t.out 2>&1
19*d21b3d34SFangrui Song // RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
20*d21b3d34SFangrui Song 
21*d21b3d34SFangrui Song #include <stdlib.h>
22*d21b3d34SFangrui Song 
23*d21b3d34SFangrui Song extern "C"
f(int depth)24*d21b3d34SFangrui Song int f(int depth) {
25*d21b3d34SFangrui Song   if (depth) return f(depth - 1);
26*d21b3d34SFangrui Song 
27*d21b3d34SFangrui Song   int x;
28*d21b3d34SFangrui Song   int *volatile p = &x;
29*d21b3d34SFangrui Song   return *p;
30*d21b3d34SFangrui Song }
31*d21b3d34SFangrui Song 
main(int argc,char ** argv)32*d21b3d34SFangrui Song int main(int argc, char **argv) {
33*d21b3d34SFangrui Song   return f(1);
34*d21b3d34SFangrui Song   // CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value
35*d21b3d34SFangrui Song   // CHECK: {{#0 0x.* in main .*stack-origin2.cpp:}}[[@LINE-2]]
36*d21b3d34SFangrui Song 
37*d21b3d34SFangrui Song   // CHECK-ORIGINS: Uninitialized value was created by an allocation of 'x' in the stack frame of function 'f'
38*d21b3d34SFangrui Song   // CHECK-ORIGINS: {{#0 0x.* in f .*stack-origin2.cpp:}}[[@LINE-14]]
39*d21b3d34SFangrui Song 
40*d21b3d34SFangrui Song   // CHECK: SUMMARY: MemorySanitizer: use-of-uninitialized-value {{.*stack-origin2.cpp:.* main}}
41*d21b3d34SFangrui Song }
42