bjoernager/rust
bjoernager/rust
1
Fork 0
Code Activity

Explain disabled span hashing.

Browse source
This commit is contained in:
Camille GILLOT 2022-10-31 16:48:23 +00:00
parent 5b9360bb1e
commit 7b6ead2027
1 changed files with 4 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

4
compiler/rustc_span/src/hygiene.rs
View file

@ -104,6 +104,10 @@ fn assert_default_hashing_controls<CTX: HashStableContext>(ctx: &CTX, msg: &str)
// `-Z incremental-ignore-spans` option. Normally, this option is disabled,
// which will cause us to require that this method always be called with `Span` hashing
// enabled.
//
// Span hashing can also be disabled without `-Z incremental-ignore-spans`.
// This is the case for instance when building a hash for name mangling.
// Such configuration must not be used for metadata.
HashingControls { hash_spans }
if hash_spans == !ctx.unstable_opts_incremental_ignore_spans() => {}
other => panic!("Attempted hashing of {msg} with non-default HashingControls: {:?}", other),