4083d54675
[libFuzzer] experimental flag to tweak the corpus distribution. Seems to improve the situation dramatically on the png benchmark and make things worse on a number of micro-puzzles. Needs more A/B testing
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llvm-svn: 315407
2017-10-11 01:44:26 +00:00
330496c3fc
[libFuzzer] Disable experimental clang coverage support by default.
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Summary:
It can be enabled via "-use_clang_coverage=1" flag. Reason for disabling:
libFuzzer resets Clang Counters and makes it impossible to generate coverage
report for a regular fuzz target (i.e. not standalone build).
Reviewers: kcc
Reviewed By: kcc
Subscribers: kcc
Differential Revision: https://reviews.llvm.org/D38604
llvm-svn: 315029
2017-10-05 22:41:03 +00:00
93679be037
[libFuzzer] factor out some code into GetSizedFilesFromDir; NFC
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llvm-svn: 313081
2017-09-12 21:58:07 +00:00
3f26dac416
[libfuzzer] Compare TotalNumberOfRuns with MaxNumberOfRuns when testing a memory leak.
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Summary:
Fuzzer::TryDetectingAMemoryLeak may call ExecuteCallback which would
increment TotalNumberOfRuns, but it doesn't respect Options.MaxNumberOfRuns
value specified by a user.
Context: https://github.com/google/oss-fuzz/issues/822#issuecomment-328153970
Reviewers: kcc
Reviewed By: kcc
Differential Revision: https://reviews.llvm.org/D37632
llvm-svn: 312993
2017-09-12 02:01:54 +00:00
082e9a7528
[libFuzzer] tolerate missing files when loading the seed corpus
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llvm-svn: 312269
2017-08-31 19:17:15 +00:00
4faeb87ebe
[libFUzzer] change the way we load the seed corpora: instead of loading all files and these executing all files, load and execute them one-by-one. This should reduce the memory usage in many cases
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llvm-svn: 312033
2017-08-29 20:51:24 +00:00
3a8e3c8336
[libFuzzer] refactoring: move reading the seed corpus closer to where it's consumed; NFC
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llvm-svn: 311972
2017-08-29 02:05:01 +00:00
bebcbfb46d
[libFuzzer] Use custom allocators for STL containers in libFuzzer.
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Avoids ODR violations causing spurious ASAN warnings.
Differential Revision: https://reviews.llvm.org/D37086
llvm-svn: 311866
2017-08-27 23:20:09 +00:00
24069a0424
Revert "[libFuzzer] Use custom allocators for STL containers in libFuzzer"
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This reverts commit 3539efc2f2218dba2bcbd645d0fe276f2b5cf588.
llvm-svn: 311831
2017-08-26 17:50:35 +00:00
d50410bfb1
[libFuzzer] Use custom allocators for STL containers in libFuzzer
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Avoids ODR violations causing spurious ASAN container overflow warnings.
Differential Revision: https://reviews.llvm.org/D37086
llvm-svn: 311830
2017-08-26 17:17:37 +00:00
2eef816e6e
[libFuzzer] add -print_funcs=1 (on bey default): print newly discovered functions during fuzzing
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llvm-svn: 311797
2017-08-25 20:09:25 +00:00
f65cf64fa2
[libFuzzer] apply changes lost during the migration to compiler-rt
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llvm-svn: 311420
2017-08-22 01:28:32 +00:00
10ab2ace13
Move libFuzzer to compiler_rt.
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Resulting library binaries will be named libclang_rt.fuzzer*, and will
be placed in Clang toolchain, allowing redistribution.
Differential Revision: https://reviews.llvm.org/D36908
llvm-svn: 311407
2017-08-21 23:25:50 +00:00
Kostya Serebryany