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| author | Langston Barrett <langston.barrett@gmail.com> | 2023-03-16 17:36:38 -0400 |
|---|---|---|
| committer | Michael Goulet <michael@errs.io> | 2023-03-16 18:40:40 -0700 |
| commit | 0eb0d25f26ed340cdfc9b24ddb6d173f7a7503bd (patch) | |
| tree | e26a4a7e5230e28b858fe87e866ff4333f4be3ac /src/doc/rustc-dev-guide | |
| parent | 7dedcf9ade17e5ae6a4aa3ea737decc22002b105 (diff) | |
| download | rust-0eb0d25f26ed340cdfc9b24ddb6d173f7a7503bd.tar.gz rust-0eb0d25f26ed340cdfc9b24ddb6d173f7a7503bd.zip | |
Mention debug assertions
Diffstat (limited to 'src/doc/rustc-dev-guide')
| -rw-r--r-- | src/doc/rustc-dev-guide/src/fuzzing.md | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/doc/rustc-dev-guide/src/fuzzing.md b/src/doc/rustc-dev-guide/src/fuzzing.md index 1c6dcfe3a21..f687fbc92d7 100644 --- a/src/doc/rustc-dev-guide/src/fuzzing.md +++ b/src/doc/rustc-dev-guide/src/fuzzing.md @@ -120,6 +120,16 @@ target-cpu=native` or even PGO/BOLT to squeeze out a few more executions per second. Of course, it's best to try multiple build configurations and see what actually results in superior throughput. +You may want to build rustc from source with debug assertions to find +additional bugs, though this is a trade-off: it can slow down fuzzing by +requiring extra work for every execution. To enable debug assertions, add this +to `config.toml` when compiling rustc: + +```toml +[rust] +debug-assertions = true +``` + ## Existing projects - [fuzz-rustc][fuzz-rustc] demonstrates how to fuzz rustc with libfuzzer |