File: catch-alignment-assumption-blacklist.c

package info (click to toggle)
llvm-toolchain-11 1%3A11.0.1-2
  • links: PTS, VCS
  • area: main
  • in suites: bullseye
  • size: 995,808 kB
  • sloc: cpp: 4,767,656; ansic: 760,916; asm: 477,436; python: 170,940; objc: 69,804; lisp: 29,914; sh: 23,855; f90: 18,173; pascal: 7,551; perl: 7,471; ml: 5,603; awk: 3,489; makefile: 2,573; xml: 915; cs: 573; fortran: 503; javascript: 452
file content (28 lines) | stat: -rw-r--r-- 982 bytes parent folder | download | duplicates (7) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
 
// 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=CHECK

// CHECK-LABEL: @baseline
void *baseline(void *x) {
  // CHECK: call void @__ubsan_handle_alignment_assumption(
  return __builtin_assume_aligned(x, 1);
}

// CHECK-LABEL: blacklist_0
__attribute__((no_sanitize("undefined"))) void *blacklist_0(void *x) {
  return __builtin_assume_aligned(x, 1);
}

// CHECK-LABEL: blacklist_1
__attribute__((no_sanitize("alignment"))) void *blacklist_1(void *x) {
  return __builtin_assume_aligned(x, 1);
}

// CHECK-LABEL: dont_ignore_volatile_ptrs
void *dont_ignore_volatile_ptrs(void * volatile x) {
  // CHECK: call void @__ubsan_handle_alignment_assumption(
  return __builtin_assume_aligned(x, 1);
}

// CHECK-LABEL: ignore_volatiles
void *ignore_volatiles(volatile void * x) {
  return __builtin_assume_aligned(x, 1);
}