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This CL adds experimental coverage instrumentation similar to what github.com/dvyukov/go-fuzz produces in its -libfuzzer mode. The coverage can be enabled by compiling with -d=libfuzzer. It's intended to be used in conjunction with -buildmode=c-archive to produce an ELF archive (.a) file that can be linked with libFuzzer. See #14565 for example usage. The coverage generates a unique 8-bit counter for each basic block in the original source code, and emits an increment operation. These counters are then collected into the __libfuzzer_extra_counters ELF section for use by libFuzzer. Updates #14565. Change-Id: I239758cc0ceb9ca1220f2d9d3d23b9e761db9bf1 Reviewed-on: https://go-review.googlesource.com/c/go/+/202117 Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Keith Randall <khr@golang.org> |
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The Go Programming Language
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