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| author | The 8472 <git@infinite-source.de> | 2023-07-02 22:43:39 +0200 |
|---|---|---|
| committer | The 8472 <git@infinite-source.de> | 2023-07-03 13:29:15 +0200 |
| commit | 14e57d7c134cc80878c10f2e2bb61e62cc6a2fdb (patch) | |
| tree | b970f018ef5091a430589e8c2a1c152252d4df18 /compiler/rustc_expand/src | |
| parent | 6162f6f12339aa81fe16b8a64644ead497e411b2 (diff) | |
| download | rust-14e57d7c134cc80878c10f2e2bb61e62cc6a2fdb.tar.gz rust-14e57d7c134cc80878c10f2e2bb61e62cc6a2fdb.zip | |
perform TokenStream replacement in-place when possible in expand_macro
Diffstat (limited to 'compiler/rustc_expand/src')
| -rw-r--r-- | compiler/rustc_expand/src/mbe/macro_rules.rs | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/compiler/rustc_expand/src/mbe/macro_rules.rs b/compiler/rustc_expand/src/mbe/macro_rules.rs index 4a8a14994ff..42cc0a6b143 100644 --- a/compiler/rustc_expand/src/mbe/macro_rules.rs +++ b/compiler/rustc_expand/src/mbe/macro_rules.rs @@ -223,8 +223,7 @@ fn expand_macro<'cx>( // Replace all the tokens for the corresponding positions in the macro, to maintain // proper positions in error reporting, while maintaining the macro_backtrace. if tts.len() == rhs.tts.len() { - tts = tts.map_enumerated(|i, tt| { - let mut tt = tt.clone(); + tts = tts.map_enumerated_owned(|i, mut tt| { let rhs_tt = &rhs.tts[i]; let ctxt = tt.span().ctxt(); match (&mut tt, rhs_tt) { |