Unknown pass name 'sancov'

[smoelius]

rust-fuzz/cargo-fuzz#276

afl.rs suffers from this issue as well:

afl.rs/src/bin/cargo-afl.rs

Line 307 in 2913404

-C passes=sancov \

afl.rs/src/bin/cargo-afl.rs

Line 326 in 2913404

-C passes=sancov \

There seem to be at least two options:

• Wait and see what cargo-fuzz does.
• Charge ahead and implement a fix for the latest nightly.

I don't have a strong opinion. Does anyone else?

[smoelius]

cargo-fuzz has published a fix: rust-fuzz/cargo-fuzz#277

[charlesxsh]

This error is caused by new LLVM pass manager, which sancov has a new name called "sancov-module". The fix should check llvm version to decide which name should be used.

[charlesxsh]

@smoelius The workaround could be passing -Znew-llvm-pass-manager=no to avoid new LLVM pass manager.
If running in Cargo, it will be RUSTFLAGS="-Znew-llvm-pass-manager=no" cargo ...

[smoelius]

@smoelius The workaround could be passing -Znew-llvm-pass-manager=no to avoid new LLVM pass manager. If running in Cargo, it will be RUSTFLAGS="-Znew-llvm-pass-manager=no" cargo ...

@charlesxsh I'm sorry for having gotten sidetracked with #193. But your suggestion was very helpful, and I did actually make use it. Thank you very much.

[smoelius]

rust-lang/rust@150bd8b