1 // Check that 8-byte store updates origin for the full store range. 2 // RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -o %t && not %run %t >%t.out 2>&1 3 // RUN: FileCheck %s < %t.out && FileCheck %s < %t.out 4 // RUN: %clangxx_msan -fsanitize-memory-track-origins -O2 %s -o %t && not %run %t >%t.out 2>&1 5 // RUN: FileCheck %s < %t.out && FileCheck %s < %t.out 6 7 #include <sanitizer/msan_interface.h> 8 9 int main() { 10 uint64_t *volatile p = new uint64_t; 11 uint64_t *volatile q = new uint64_t; 12 *p = *q; 13 char *z = (char *)p; 14 return z[6]; 15 // CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value 16 // CHECK: in main {{.*}}origin-store-long.cc:[[@LINE-2]] 17 18 // CHECK: Uninitialized value was created by a heap allocation 19 // CHECK: in main {{.*}}origin-store-long.cc:[[@LINE-8]] 20 } 21 22
