[LibFuzzer] test_single_input option to run a single test case.
-test_single_input flag specifies a file name with test data. Review URL: http://reviews.llvm.org/D13359 Patch by Mike Aizatsky! llvm-svn: 249096
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@ -68,6 +68,7 @@ The most important flags are::
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sync_timeout 600 Minimum timeout between syncs.
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use_traces 0 Experimental: use instruction traces
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only_ascii 0 If 1, generate only ASCII (isprint+isspace) inputs.
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test_single_input "" Use specified file content as test input. Test will be run only once. Useful for debugging a particular case.
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For the full list of flags run the fuzzer binary with ``-help=1``.
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@ -202,6 +202,12 @@ int ApplyTokens(const Fuzzer &F, const char *InputFilePath) {
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return 0;
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}
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int RunOneTest(Fuzzer *F, const char *InputFilePath) {
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Unit U = FileToVector(InputFilePath);
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F->ExecuteCallback(U);
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return 0;
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}
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int FuzzerDriver(int argc, char **argv, UserCallback Callback) {
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FuzzerRandomLibc Rand(0);
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SimpleUserSuppliedFuzzer SUSF(&Rand, Callback);
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@ -275,6 +281,9 @@ int FuzzerDriver(const std::vector<std::string> &Args,
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if (Flags.apply_tokens)
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return ApplyTokens(F, Flags.apply_tokens);
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if (Flags.test_single_input)
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return RunOneTest(&F, Flags.test_single_input);
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unsigned Seed = Flags.seed;
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// Initialize Seed.
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if (Seed == 0)
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@ -66,3 +66,4 @@ FUZZER_FLAG_INT(tbm_depth, 5, "Apply at most this number of consecutive"
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"trace-based-mutations (tbm).")
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FUZZER_FLAG_INT(tbm_width, 5, "Apply at most this number of independent"
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"trace-based-mutations (tbm)")
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FUZZER_FLAG_STRING(test_single_input, "Use specified file as test input.")
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@ -115,10 +115,10 @@ class Fuzzer {
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static void StaticAlarmCallback();
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Unit SubstituteTokens(const Unit &U) const;
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void ExecuteCallback(const Unit &U);
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private:
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void AlarmCallback();
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void ExecuteCallback(const Unit &U);
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void MutateAndTestOne(Unit *U);
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void ReportNewCoverage(size_t NewCoverage, const Unit &U);
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size_t RunOne(const Unit &U);
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@ -1,6 +1,7 @@
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CHECK: BINGO
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RUN: LLVMFuzzer-SimpleTest 2>&1 | FileCheck %s
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RUN: LLVMFuzzer-SimpleTest -test_single_input=%S/hi.txt 2>&1 | FileCheck %s
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RUN: not LLVMFuzzer-InfiniteTest -timeout=2 2>&1 | FileCheck %s --check-prefix=InfiniteTest
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InfiniteTest: ALARM: working on the last Unit for
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@ -0,0 +1 @@
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Hi!
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