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[libFuzzer] dump long running units to disk

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@243031 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Kostya Serebryany 2015-07-23 18:37:22 +00:00
parent 899ad49863
commit 6cbc095f13
3 changed files with 9 additions and 8 deletions
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2
lib/Fuzzer/FuzzerInternal.h
View File

@ -108,7 +108,7 @@ class Fuzzer {
size_t RunOneMaximizeFullCoverageSet(const Unit &U);
size_t RunOneMaximizeCoveragePairs(const Unit &U);
void WriteToOutputCorpus(const Unit &U);
void WriteToCrash(const Unit &U, const char *Prefix);
void WriteUnitToFileWithPrefix(const Unit &U, const char *Prefix);
void PrintStats(const char *Where, size_t Cov, const char *End = "\n");
void PrintUnitInASCIIOrTokens(const Unit &U, const char *PrintAfter = "");

9
lib/Fuzzer/FuzzerLoop.cpp
View File

@ -49,7 +49,7 @@ void Fuzzer::DeathCallback() {
Printf("DEATH:\n");
Print(CurrentUnit, "\n");
PrintUnitInASCIIOrTokens(CurrentUnit, "\n");
WriteToCrash(CurrentUnit, "crash-");
WriteUnitToFileWithPrefix(CurrentUnit, "crash-");
}
void Fuzzer::StaticAlarmCallback() {
@ -70,7 +70,7 @@ void Fuzzer::AlarmCallback() {
Options.UnitTimeoutSec);
Print(CurrentUnit, "\n");
PrintUnitInASCIIOrTokens(CurrentUnit, "\n");
WriteToCrash(CurrentUnit, "timeout-");
WriteUnitToFileWithPrefix(CurrentUnit, "timeout-");
exit(1);
}
}
@ -161,6 +161,7 @@ size_t Fuzzer::RunOne(const Unit &U) {
TimeOfLongestUnitInSeconds = TimeOfUnit;
Printf("Longest unit: %zd s:\n", TimeOfLongestUnitInSeconds);
Print(U, "\n");
WriteUnitToFileWithPrefix(U, "long-running-unit-");
}
return Res;
}
@ -248,10 +249,10 @@ void Fuzzer::WriteToOutputCorpus(const Unit &U) {
Printf("Written to %s\n", Path.c_str());
}
void Fuzzer::WriteToCrash(const Unit &U, const char *Prefix) {
void Fuzzer::WriteUnitToFileWithPrefix(const Unit &U, const char *Prefix) {
std::string Path = Prefix + Hash(U);
WriteToFile(U, Path);
Printf("CRASHED; file written to %s\nBase64: ", Path.c_str());
Printf("Test unit written to %s\nBase64: ", Path.c_str());
PrintFileAsBase64(Path);
}

6
lib/Fuzzer/test/fuzzer.test
View File

@ -4,14 +4,14 @@ RUN: LLVMFuzzer-SimpleTest 2>&1 | FileCheck %s
RUN: not LLVMFuzzer-InfiniteTest -timeout=2 2>&1 | FileCheck %s --check-prefix=InfiniteTest
InfiniteTest: ALARM: working on the last Unit for
InfiniteTest: CRASHED; file written to timeout
InfiniteTest: Test unit written to timeout-
RUN: not LLVMFuzzer-TimeoutTest -timeout=5 2>&1 | FileCheck %s --check-prefix=TimeoutTest
TimeoutTest: ALARM: working on the last Unit for
TimeoutTest: CRASHED; file written to timeout
TimeoutTest: Test unit written to timeout-
RUN: not LLVMFuzzer-NullDerefTest 2>&1 | FileCheck %s --check-prefix=NullDerefTest
NullDerefTest: CRASHED; file written to crash-
NullDerefTest: Test unit written to crash-
RUN: not LLVMFuzzer-FullCoverageSetTest -timeout=15 -seed=1 -mutate_depth=2 -use_full_coverage_set=1 2>&1 | FileCheck %s