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22 Commits

Author SHA1 Message Date
Kostya Serebryany
f77ffed10e [libFuzzer] suggest a dictionary to the user of some of the trace-based dictionary entries were successful 
llvm-svn: 257736
 2016-01-14 02:36:44 +00:00
Kostya Serebryany
df2508fcaf [libFuzzer] when a new unit is discovered using a dictionary, print all used dictionary entries 
llvm-svn: 257435
 2016-01-12 02:36:59 +00:00
Kostya Serebryany
bdc66ac566 [libFuzzer] change the way trace-based mutations are applied. Instead of a custom code just rely on the automatically created dictionary 
llvm-svn: 257248
 2016-01-09 03:08:58 +00:00
Kostya Serebryany
da719cf533 [libFuzzer] add a position hint to the dictionary-based mutator 
llvm-svn: 257013
 2016-01-07 01:49:35 +00:00
Kostya Serebryany
2c6246a7e6 [libFuzzer] extend the dictionary mutator to optionally overwrite data with the dict entry 
llvm-svn: 256900
 2016-01-06 02:13:04 +00:00
Kostya Serebryany
ab36ca708c [libFuzzer] make CrossOver just one of the other mutations 
llvm-svn: 256081
 2015-12-19 02:49:09 +00:00
Kostya Serebryany
e4adf51693 [libFuzzer] print successfull mutations sequences 
llvm-svn: 256071
 2015-12-19 01:09:49 +00:00
Kostya Serebryany
6e1f94e9cd [libFuzzer] fix 32-bit build 
llvm-svn: 249646
 2015-10-08 00:59:25 +00:00
Kostya Serebryany
a575372f59 [libFuzzer] add one more mutator: Mutate_ChangeASCIIInteger 
llvm-svn: 247027
 2015-09-08 17:19:31 +00:00
Kostya Serebryany
2c51ca12e7 [libFuzzer] when a single mutation fails try a few more times with other mutations before returning un-mutated data 
llvm-svn: 246828
 2015-09-04 00:40:29 +00:00
Kostya Serebryany
28a699d9b8 [libFuzzer] actually make the dictionaries work (+docs) 
llvm-svn: 246825
 2015-09-04 00:12:11 +00:00
Kostya Serebryany
3eaa9123bf [libFuzzer] refactor the mutation functions so that they are now methods of a class. NFC 
llvm-svn: 246808
 2015-09-03 21:24:19 +00:00
Kostya Serebryany
acf2228ee8 [libFuzzer] add one more mutation strategy: byte shuffling 
llvm-svn: 244188
 2015-08-06 01:29:13 +00:00
Kostya Serebryany
7ee2b779f7 [libFuzzer] more refactoring of the Mutator and adding tests to it 
llvm-svn: 243818
 2015-08-01 02:23:06 +00:00
Kostya Serebryany
82464edd32 [libFuzzer] start refactoring the Mutator and adding tests to it 
llvm-svn: 243817
 2015-08-01 01:42:51 +00:00
Kostya Serebryany
02e05d0662 [libFuzzer] allow users to supply their own implementation of rand 
llvm-svn: 243078
 2015-07-24 01:06:40 +00:00
Kostya Serebryany
2ee531c66a [lib/Fuzzer] extend the fuzzer interface to allow user-supplied mutators 
llvm-svn: 238059
 2015-05-22 22:35:31 +00:00
Kostya Serebryany
1b890a52e0 [fuzzer] properly annotate fallthrough, add one more entry to FAQ 
llvm-svn: 229880
 2015-02-19 18:21:12 +00:00
Kostya Serebryany
31b6858756 [fuzzer] make multi-process execution more verbose; fix mutation to actually respect mutation depth and to never produce empty units 
llvm-svn: 228170
 2015-02-04 19:10:20 +00:00
Aaron Ballman
ea7bb26fdf Reverting r227452, which adds back the fuzzer library. Now excluding the fuzzer library based on LLVM_USE_SANITIZE_COVERAGE being set or unset. 
llvm-svn: 227464
 2015-01-29 16:58:29 +00:00
Aaron Ballman
28eea44386 Temporarily reverting the fuzzer library as it causes too many build issues for MSVC users. This reverts: 227445, 227395, 227389, 227357, 227254, 227252 
llvm-svn: 227452
 2015-01-29 15:49:22 +00:00
Kostya Serebryany
87931c3355 Add a Fuzzer library 
Summary:
A simple genetic in-process coverage-guided fuzz testing library.

I've used this fuzzer to test clang-format
(it found 12+ bugs, thanks djasper@ for the fixes!)
and it may also help us test other parts of LLVM.
So why not keep it in the LLVM repository?

I plan to add the cmake build rules later (in a separate patch, if that's ok)
and also add a clang-format-fuzzer target.

See README.txt for details.

Test Plan: Tests will follow separately.

Reviewers: djasper, chandlerc, rnk

Reviewed By: rnk

Subscribers: majnemer, ygribov, dblaikie, llvm-commits

Differential Revision: http://reviews.llvm.org/D7184

llvm-svn: 227252
 2015-01-27 22:08:41 +00:00