compiler-rt/test/msan/stack-origin.cpp

   1 // RUN: %clangxx_msan -O0 %s -o %t && not %run %t >%t.out 2>&1
   2 // RUN: FileCheck %s < %t.out
   3 // RUN: %clangxx_msan -O1 %s -o %t && not %run %t >%t.out 2>&1
   4 // RUN: FileCheck %s < %t.out
   5 // RUN: %clangxx_msan -O2 %s -o %t && not %run %t >%t.out 2>&1
   6 // RUN: FileCheck %s < %t.out
   7 // RUN: %clangxx_msan -O3 %s -o %t && not %run %t >%t.out 2>&1
   8 // RUN: FileCheck %s < %t.out
   9
  10 // RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -o %t && not %run %t >%t.out 2>&1
  11 // RUN: FileCheck %s < %t.out && FileCheck %s --check-prefix=CHECK-ORIGINS < %t.out
  12 // RUN: %clangxx_msan -fsanitize-memory-track-origins -O1 %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 -O2 %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 -O3 %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
  19 #include <stdlib.h>
  20 int main(int argc, char **argv) {
  21   int x;
  22   int *volatile p = &x;
  23   return *p;
  24   // CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value
  25   // CHECK: {{#0 0x.* in main .*stack-origin.cpp:}}[[@LINE-2]]
  26
  27   // CHECK-ORIGINS: Uninitialized value was created by an allocation of 'x' in the stack frame of function 'main'
  28   // CHECK-ORIGINS: {{#0 0x.* in main .*stack-origin.cpp:}}[[@LINE-8]]
  29
  30   // CHECK: SUMMARY: MemorySanitizer: use-of-uninitialized-value {{.*stack-origin.cpp:.* main}}
  31 }