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Extend comment on assertion

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This commit is contained in:
John Kåre Alsaker 2023-08-23 20:16:22 +02:00
parent e41240e45b
commit 246a6a6589
1 changed files with 5 additions and 1 deletions
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6
compiler/rustc_span/src/hygiene.rs
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@ -1410,8 +1410,12 @@ pub fn decode_syntax_context<D: Decoder, F: FnOnce(&mut D, u32) -> SyntaxContext
&mut hygiene_data.syntax_context_data[ctxt.as_u32() as usize], &mut hygiene_data.syntax_context_data[ctxt.as_u32() as usize],
ctxt_data, ctxt_data,
); );
// Make sure nothing weird happening while `decode_data` was running
if cfg!(not(parallel_compiler)) { if cfg!(not(parallel_compiler)) {
// Make sure nothing weird happened while `decode_data` was running.
// We used `kw::Empty` for the dummy value and we expect nothing to be
// modifying the dummy entry.
// This does not hold for the parallel compiler as another thread may
// have inserted the fully decoded data.
assert_eq!(dummy.dollar_crate_name, kw::Empty); assert_eq!(dummy.dollar_crate_name, kw::Empty);
} }
}); });