1 // RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -o %t && not %run %t >%t.out 2>&1 2 // RUN: FileCheck %s < %t.out && FileCheck %s < %t.out 3 // RUN: %clangxx_msan -fsanitize-memory-track-origins -O3 %s -o %t && not %run %t >%t.out 2>&1 4 // RUN: FileCheck %s < %t.out && FileCheck %s < %t.out 5 6 // Test origin propagation through insertvalue IR instruction. 7 // REQUIRES: stable-runtime 8 9 #include <stdio.h> 10 #include <stdint.h> 11 12 struct mypair { 13 int64_t x; 14 int y; 15 }; 16 17 mypair my_make_pair(int64_t x, int y) { 18 mypair p; 19 p.x = x; 20 p.y = y; 21 return p; 22 } 23 24 int main() { 25 int64_t * volatile p = new int64_t; 26 mypair z = my_make_pair(*p, 0); 27 if (z.x) 28 printf("zzz\n"); 29 // CHECK: MemorySanitizer: use-of-uninitialized-value 30 // CHECK: {{in main .*insertvalue_origin.cc:}}[[@LINE-3]] 31 32 // CHECK: Uninitialized value was created by a heap allocation 33 // CHECK: {{in main .*insertvalue_origin.cc:}}[[@LINE-8]] 34 delete p; 35 return 0; 36 } 37
