File: AlignmentAssumptionTest.cpp

package info (click to toggle)
llvm-toolchain-snapshot 1%3A22~%2B%2B20251023025710%2B3f47a7be1ae6-1~exp2
  • links: PTS, VCS
  • area: main
  • in suites: experimental
  • size: 2,336,072 kB
  • sloc: cpp: 7,822,956; ansic: 1,531,523; asm: 1,088,291; python: 260,771; f90: 98,765; objc: 70,846; lisp: 47,149; pascal: 17,852; sh: 8,636; ml: 5,111; perl: 4,720; makefile: 3,645; awk: 3,523; javascript: 2,270; xml: 892; fortran: 793
file content (28 lines) | stat: -rw-r--r-- 720 bytes parent folder | download | duplicates (34) 
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
 
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception

// Test for alignment assumption failure.

#include <assert.h>
#include <climits>
#include <cstddef>
#include <cstdint>
#include <cstdlib>
#include <iostream>

static volatile int32_t Sink;

extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
  assert(Data);
  if (Size > 0 && Data[0] == 'H') {
    Sink = 1;
    if (Size > 1 && Data[1] == 'i') {
      Sink = 2;
      if (Size > 2 && Data[2] == '!') {
        auto r = __builtin_assume_aligned(Data + 1, 0x8000);
      }
    }
  }
  return 0;
}