Avoid emitting full macro body into JSON errors#94327
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Can you show a diff of how the JSON changes? There are some tools that look at def_site_span (however, I'm not aware of any that look at the actual |
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https://gist.github.com/Mark-Simulacrum/e1fdca8346aef5c63147897bb2b35979 -- looks like the rendered view truncates, but that should give an overall idea. That's the diff of output for the src/test/ui/suggestions/missing-lifetime-specifier.rs test. |
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…etrochenkov Avoid emitting full macro body into JSON errors While investigating rust-lang#94322, it was noted that currently the JSON diagnostics for macro backtraces include the full def_site span -- the whole macro body. It seems like this shouldn't be necessary, so this PR adjusts the span to just be the "guessed head", typically the macro name. It doesn't look like we keep enough information to synthesize a nicer span here at this time. Atop rust-lang#92123, this reduces output for the src/test/ui/suggestions/missing-lifetime-specifier.rs test from 660 KB to 156 KB locally.
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…etrochenkov Avoid emitting full macro body into JSON errors While investigating rust-lang#94322, it was noted that currently the JSON diagnostics for macro backtraces include the full def_site span -- the whole macro body. It seems like this shouldn't be necessary, so this PR adjusts the span to just be the "guessed head", typically the macro name. It doesn't look like we keep enough information to synthesize a nicer span here at this time. Atop rust-lang#92123, this reduces output for the src/test/ui/suggestions/missing-lifetime-specifier.rs test from 660 KB to 156 KB locally.
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Rollup of 9 pull requests Successful merges: - rust-lang#91795 (resolve/metadata: Stop encoding macros as reexports) - rust-lang#93714 (better ObligationCause for normalization errors in `can_type_implement_copy`) - rust-lang#94175 (Improve `--check-cfg` implementation) - rust-lang#94212 (Stop manually SIMDing in `swap_nonoverlapping`) - rust-lang#94242 (properly handle fat pointers to uninhabitable types) - rust-lang#94308 (Normalize main return type during mono item collection & codegen) - rust-lang#94315 (update auto trait lint for `PhantomData`) - rust-lang#94316 (Improve string literal unescaping) - rust-lang#94327 (Avoid emitting full macro body into JSON errors) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
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While investigating #94322, it was noted that currently the JSON diagnostics for macro backtraces include the full def_site span -- the whole macro body.
It seems like this shouldn't be necessary, so this PR adjusts the span to just be the "guessed head", typically the macro name. It doesn't look like we keep enough information to synthesize a nicer span here at this time.
Atop #92123, this reduces output for the src/test/ui/suggestions/missing-lifetime-specifier.rs test from 660 KB to 156 KB locally.