disallow most attrs on eiis#157312
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Reminder, once the PR becomes ready for a review, use |
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I don't think an exhaustive test is too useful, this just tests some of the behavior. An exhaustive test just means we duplicate the logic here and in the macro. I do recommend people to add tests if they depend on specific attrs being enabled I guess |
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Just one question: what if I need to define link-section or symbol-name for eii-definition, as well same for default eii-impl? Use-case: entry-points, allocators, panic, any global or layout-depending things in embedded and custom targets. |
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…onathanBrouwer disallow most attrs on eiis Most attributes do not make sense on EIIs. Whether they're copied to the macro, default, or foreign item is also highly dependent per attribute. I was thinking of ways to configure this, though I don't think we need that kind of complexity rn. For now I just reject them all, except for ones that obviously make sense or are necessary for current usage in std. user attr macros are blanket-rejected with this too, which seems good, it seems cursed to present expanded eiis to them. r? @JonathanBrouwer
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…uwer Rollup of 6 pull requests Successful merges: - #155418 (transmute: fix check for whether newtypes have equal size) - #156603 (Clarify E0381 diagnostics for branch conditions) - #156643 (Document run-make external dependencies) - #157009 (Avoid `unreachable_code` on required return values) - #157308 (make typing mode exhaustive again...) - #157312 (disallow most attrs on eiis)
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…uwer Rollup of 6 pull requests Successful merges: - #155418 (transmute: fix check for whether newtypes have equal size) - #156603 (Clarify E0381 diagnostics for branch conditions) - #156643 (Document run-make external dependencies) - #157009 (Avoid `unreachable_code` on required return values) - #157308 (make typing mode exhaustive again...) - #157312 (disallow most attrs on eiis)
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Most attributes do not make sense on EIIs. Whether they're copied to the macro, default, or foreign item is also highly dependent per attribute.
I was thinking of ways to configure this, though I don't think we need that kind of complexity rn. For now I just reject them all, except for ones that obviously make sense or are necessary for current usage in std.
user attr macros are blanket-rejected with this too, which seems good, it seems cursed to present expanded eiis to them.
r? @JonathanBrouwer