a06ad18669
Summary: This is the compiler-rt part. The clang part is D54589. This is a second commit, the original one was r351106, which was mass-reverted in r351159 because 2 compiler-rt tests were failing. Now, i have fundamentally changed the testing approach: i malloc a few bytes, intentionally mis-align the pointer (increment it by one), and check that. Also, i have decreased the expected alignment. This hopefully should be enough to pacify all the bots. If not, i guess i might just drop the two 'bad' tests. Reviewers: filcab, vsk, #sanitizers, vitalybuka, rsmith, morehouse Reviewed By: morehouse Subscribers: rjmccall, krytarowski, rsmith, kcc, srhines, kubamracek, dberris, llvm-commits Tags: #sanitizers Differential Revision: https://reviews.llvm.org/D54590 llvm-svn: 351178
28 lines
624 B
C++
28 lines
624 B
C++
// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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// Test for alignment assumption failure.
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#include <assert.h>
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#include <climits>
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#include <cstddef>
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#include <cstdint>
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#include <cstdlib>
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#include <iostream>
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static volatile int32_t Sink;
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extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
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assert(Data);
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if (Size > 0 && Data[0] == 'H') {
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Sink = 1;
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if (Size > 1 && Data[1] == 'i') {
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Sink = 2;
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if (Size > 2 && Data[2] == '!') {
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__builtin_assume_aligned(Data + 1, 0x8000);
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}
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}
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}
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return 0;
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}
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