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Nonexisting macro is silently accepted in trait definition block #40845

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bluss opened this issue Mar 26, 2017 · 1 comment
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Nonexisting macro is silently accepted in trait definition block #40845

bluss opened this issue Mar 26, 2017 · 1 comment
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@jseyfried
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A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) regression-from-stable-to-beta Performance or correctness regression from stable to beta. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.

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@bluss
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bluss commented Mar 26, 2017

This compiles successfully on beta and nightly, but it should be an error.

trait Trait {
    wut!{ }
}

fn main() {
}

(playground link)

Actual Result:

The program compiles successfully.

Expected Result:

Compilation error (Rust 1.16 does this correctly)

rustc 1.16.0 (30cf806ef 2017-03-10)
error: macro undefined: 'wut!'
@bluss bluss added the regression-from-stable-to-beta Performance or correctness regression from stable to beta. label Mar 26, 2017
@sfackler sfackler added A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Mar 26, 2017
@jseyfried jseyfried self-assigned this Mar 27, 2017
@jseyfried jseyfried mentioned this issue Mar 27, 2017
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@jseyfried
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Fixed in #40849.

alexcrichton added a commit to alexcrichton/rust that referenced this issue Mar 27, 2017
@alexcrichton
Rollup merge of rust-lang#40849 - jseyfried:finalize_trait_macro_reso…
68c7385 
…lutions, r=nrc

bugfix: finalize resolutions of macros in trait positions

Fixes rust-lang#40845.
r? @nrc
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A-macros Area: All kinds of macros (custom derive, macro_rules!, proc macros, ..) regression-from-stable-to-beta Performance or correctness regression from stable to beta. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.
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@sfackler @bluss @jseyfried