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[libFuzzer] Avoid STL in MSan test. 

Summary:
STL can cause MSan false positives if lib[std]c++ isn't instrumented
with MSan.

Reviewers: kcc

Reviewed By: kcc

Subscribers: Dor1s, llvm-commits

Differential Revision: https://reviews.llvm.org/D49404

llvm-svn: 337224
This commit is contained in:
Matt Morehouse 2018-07-16 23:22:54 +00:00
parent 6751727d76
commit ef521ffe24
2 changed files with 27 additions and 1 deletions
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26
compiler-rt/test/fuzzer/SimpleTestStdio.cpp Normal file
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@ -0,0 +1,26 @@
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
// Simple test for a fuzzer. The fuzzer must find the string "Hi!".
#include <assert.h>
#include <cstdint>
#include <cstdio>
#include <cstdlib>
static volatile int 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] == '!') {
fprintf(stderr, "BINGO; Found the target, exiting\n");
exit(0);
}
}
}
return 0;
}

2
compiler-rt/test/fuzzer/msan.test
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@ -1,5 +1,5 @@
REQUIRES: msan
RUN: %msan_compiler %S/SimpleTest.cpp -o %t
RUN: %msan_compiler %S/SimpleTestStdio.cpp -o %t
RUN: not %run %t -seed=1 -runs=10000000 2>&1 | FileCheck %s --check-prefix=NO-REPORT
RUN: %msan_compiler %S/SimpleCmpTest.cpp -o %t