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[compiler-rt] libFuzzer: update -merge_control_file= help message. 

Summary:
The motivation for this change is to have a distinguisher in libFuzzer
that would let the runner know whether multistep merge is supported or not by
a particular fuzz target binary. Otherwise, multistep merge fails to execute
with older version of libFuzzer, and there is no way to verify that easily.

Reviewers: kcc

Subscribers: dberris, #sanitizers, llvm-commits

Tags: #sanitizers, #llvm

Differential Revision: https://reviews.llvm.org/D71423
This commit is contained in:
Max Moroz 2019-12-12 08:52:07 -08:00
parent bcae3a77af
commit 926fa4088c
1 changed files with 2 additions and 1 deletions
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3
compiler-rt/lib/fuzzer/FuzzerFlags.def
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@ -56,7 +56,8 @@ FUZZER_FLAG_STRING(merge_control_file,
"Specify a control file used for the merge process. "
"If a merge process gets killed it tries to leave this file "
"in a state suitable for resuming the merge. "
"By default a temporary file will be used.")
"By default a temporary file will be used."
"The same file can be used for multistep merge process.")
FUZZER_FLAG_INT(minimize_crash, 0, "If 1, minimizes the provided"
" crash input. Use with -runs=N or -max_total_time=N to limit "
"the number attempts."