35 lines · c
1// RUN: %clang_cc1 -fsanitize=alignment -fsanitize-recover=alignment -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s -implicit-check-not="call void @__ubsan_handle_alignment_assumption" --check-prefixes=CHECK2 3// CHECK-LABEL: @baseline4void *baseline(void *x) {5 // CHECK: call void @__ubsan_handle_alignment_assumption(6 return __builtin_assume_aligned(x, 1);7}8 9// CHECK-LABEL: ignorelist_010__attribute__((no_sanitize("undefined"))) void *ignorelist_0(void *x) {11 return __builtin_assume_aligned(x, 1);12}13 14// CHECK-LABEL: ignorelist_115__attribute__((no_sanitize("alignment"))) void *ignorelist_1(void *x) {16 return __builtin_assume_aligned(x, 1);17}18 19// CHECK-LABEL: dont_ignore_volatile_ptrs20void *dont_ignore_volatile_ptrs(void * volatile x) {21 // CHECK: call void @__ubsan_handle_alignment_assumption(22 return __builtin_assume_aligned(x, 1);23}24 25// CHECK-LABEL: ignore_volatiles26void *ignore_volatiles(volatile void * x) {27 return __builtin_assume_aligned(x, 1);28}29 30// CHECK-LABEL: ignore_array_volatiles31void *ignore_array_volatiles() {32 volatile int arr[] = {1};33 return __builtin_assume_aligned(arr, 4);34}35