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[libFuzzer] fix a recent bugs (buffer overflow)

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llvm-svn: 283021
This commit is contained in:
Kostya Serebryany 2016-10-01 07:13:25 +00:00
parent 6d5567d561
commit 827a5cb086
1 changed files with 1 additions and 1 deletions
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2
lib/Fuzzer/FuzzerTracePC.cpp
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@ -92,7 +92,7 @@ bool TracePC::FinalizeTrace(size_t InputSize) {
else if (Counter >= 2) Bit = 1;
size_t Feature = i * 8 + Bit;
CounterMap.AddValue(Feature);
uint32_t *SizePtr = &InputSizesPerFeature[Feature];
uint32_t *SizePtr = &InputSizesPerFeature[Feature % kFeatureSetSize];
if (!*SizePtr || *SizePtr > InputSize) {
*SizePtr = InputSize;
Res = true;