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| author | Mara Bos <m-ou.se@m-ou.se> | 2021-01-22 14:30:17 +0000 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2021-01-22 14:30:17 +0000 |
| commit | 81a60b7aa8dca83e2c9543390cf116016192871a (patch) | |
| tree | e12d9cae433f85c9956060f2380fba91b0bf9bfc /compiler/rustc_mir/src/transform/coverage/debug.rs | |
| parent | 2ceee724270f2186e5e85acff49acd35bf8a652a (diff) | |
| parent | d0c1405564024d109ec22b130584d74fcb82d153 (diff) | |
| download | rust-81a60b7aa8dca83e2c9543390cf116016192871a.tar.gz rust-81a60b7aa8dca83e2c9543390cf116016192871a.zip | |
Rollup merge of #81233 - lzutao:dbg, r=KodrAus
Document why not use concat! in dbg! macro
Original title: Reduce code generated by `dbg!` macro
The expanded code before/after: <https://rust.godbolt.org/z/hE3j95>.
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We cannot use `concat!` since `file!` could contains `{` or the expression is a block (`{ .. }`).
Using it will generated malformed format strings.
So let's document this reason why we don't use `concat!` macro at all.
Diffstat (limited to 'compiler/rustc_mir/src/transform/coverage/debug.rs')
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