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[MSan] Introduce __msan_unpoison_param().

Description

[MSan] Introduce __msan_unpoison_param().

Summary:
This allows libFuzzer to unpoison parameter shadow before calling
LLVMFuzzerTestOneInput to eliminate the false positives described
in https://github.com/google/oss-fuzz/issues/2369.

Reviewers: eugenis

Reviewed By: eugenis

Subscribers: llvm-commits, metzman, kcc

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D61751

Details

Committed
morehouseMay 9 2019, 2:50 PM
Reviewer
eugenis
Differential Revision
D61751: [MSan] Introduce __msan_unpoison_param().
Parents
rL360378: [libFuzzer] implement -focus_function=auto, to be used with Data Flow Traces
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