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" 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 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.cc:}}[[@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.cc:}}[[@LINE-14]] 39 40 // CHECK: SUMMARY: MemorySanitizer: use-of-uninitialized-value {{.*stack-origin2.cc:.* main}} 41 } 42
