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Disable running LSan tests on Darwin due the recent changes to the Clang driver #32
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to the Clang driver in apple/swift-clang#249. This is necessary because the standalone LSan tests will be executed and will fail without this patch when using the newer Clang. rdar://problem/45841334 (cherry picked from commit 56b6455)
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kubamracek
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Dec 31, 2018
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Summary: feature coverage is a useful signal that is available during the merge process, but was not printed previously. Output example: ``` $ ./fuzzer -use_value_profile=1 -merge=1 new_corpus/ seed_corpus/ INFO: Seed: 1676551929 INFO: Loaded 1 modules (2380 inline 8-bit counters): 2380 [0x90d180, 0x90dacc), INFO: Loaded 1 PC tables (2380 PCs): 2380 [0x684018,0x68d4d8), MERGE-OUTER: 180 files, 78 in the initial corpus MERGE-OUTER: attempt 1 INFO: Seed: 1676574577 INFO: Loaded 1 modules (2380 inline 8-bit counters): 2380 [0x90d180, 0x90dacc), INFO: Loaded 1 PC tables (2380 PCs): 2380 [0x684018,0x68d4d8), INFO: -max_len is not provided; libFuzzer will not generate inputs larger than 1048576 bytes MERGE-INNER: using the control file '/tmp/libFuzzerTemp.111754.txt' MERGE-INNER: 180 total files; 0 processed earlier; will process 180 files now #1 pulse cov: 134 ft: 330 exec/s: 0 rss: 37Mb #2 pulse cov: 142 ft: 462 exec/s: 0 rss: 38Mb #4 pulse cov: 152 ft: 651 exec/s: 0 rss: 38Mb #8 pulse cov: 152 ft: 943 exec/s: 0 rss: 38Mb #16 pulse cov: 520 ft: 2783 exec/s: 0 rss: 39Mb #32 pulse cov: 552 ft: 3280 exec/s: 0 rss: 41Mb #64 pulse cov: 576 ft: 3641 exec/s: 0 rss: 50Mb #78 LOADED cov: 602 ft: 3936 exec/s: 0 rss: 88Mb #128 pulse cov: 611 ft: 3996 exec/s: 0 rss: 93Mb #180 DONE cov: 611 ft: 4016 exec/s: 0 rss: 155Mb MERGE-OUTER: succesfull in 1 attempt(s) MERGE-OUTER: the control file has 39741 bytes MERGE-OUTER: consumed 0Mb (37Mb rss) to parse the control file MERGE-OUTER: 9 new files with 80 new features added; 9 new coverage edges ``` Reviewers: hctim, morehouse Reviewed By: morehouse Subscribers: delcypher, #sanitizers, llvm-commits, kcc Tags: #llvm, #sanitizers Differential Revision: https://reviews.llvm.org/D66030 git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@368617 91177308-0d34-0410-b5e6-96231b3b80d8
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Cherry-pick #31. DO NOT MERGE until approved.