[llvm-bugs] [Bug 47286] FAIL: libFuzzer :: fuzzer-custommutator.test from llvmorg-11.0.0-rc2

[via llvm-bugs]

https://bugs.llvm.org/show_bug.cgi?id=47286

Hans Wennborg <hans at chromium.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |FIXED
             Status|NEW                         |RESOLVED

--- Comment #3 from Hans Wennborg <hans at chromium.org> ---
(In reply to Max Moroz from comment #2)
> Yes, it expects a small number after the "lim: ", as that number indicates
> the temporary input length limit enforced by the -len_control= feature.
> 
> I suspect the feature is WAI, but the number printed is >=100 as the first
> line in the output is coming from a mutation #10629, i.e. earlier mutations
> used the smaller lim value.
> 
> To fix this, I would kindly ask you to change
> 
> RUN: not %run %t-CustomMutatorTest -len_control=100 2>&1 | FileCheck %s
> --check-prefix=LLVMFuzzerCustomMutatorWithLenControl
> 
> 
> to
> 
> RUN: not %run %t-CustomMutatorTest -len_control=1000 2>&1 | FileCheck %s
> --check-prefix=LLVMFuzzerCustomMutatorWithLenControl
> 
> len_control goes from 100 to 1000, that would make it more aggressive and
> should keep the "lim: " value small even after 10,000 mutations

Done as 8421503300c6145480710761983f089ccbe0bb56 on trunk and
46f3aed198a5530b5115881628e1fcfb3e7541c9 on 11.x.

Optimistically marking this fixed.

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