// Check that 8-byte store updates origin for the full store range. // RUN: %clangxx_msan -fsanitize-memory-track-origins -O0 %s -o %t && not %run %t >%t.out 2>&1 // RUN: FileCheck %s < %t.out && FileCheck %s < %t.out // RUN: %clangxx_msan -fsanitize-memory-track-origins -O2 %s -o %t && not %run %t >%t.out 2>&1 // RUN: FileCheck %s < %t.out && FileCheck %s < %t.out #include int main() { uint64_t *volatile p = new uint64_t; uint64_t *volatile q = new uint64_t; *p = *q; char *z = (char *)p; return z[6]; // CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value // CHECK: in main {{.*}}origin-store-long.cc:[[@LINE-2]] // CHECK: Uninitialized value was created by a heap allocation // CHECK: in main {{.*}}origin-store-long.cc:[[@LINE-8]] }