// RUN: %clang -fsanitize=alignment %s -o %t && %run %t 2>&1 | FileCheck %s --check-prefixes=CHECK #include int main(int argc, char *argv[]) { char *ptr = (char *)malloc(2); void *t = __builtin_assume_aligned(ptr + 1, 0x8000); (void)t; // CHECK: ubsan: alignment-assumption // CHECK-NOT: alignment-assumption free(ptr); return 0; }