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"unsupported representation for univariant enum" when using the repr attribute with single-variant enums #12371

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bstrie opened this issue Feb 18, 2014 · 1 comment
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"unsupported representation for univariant enum" when using the repr attribute with single-variant enums #12371

bstrie opened this issue Feb 18, 2014 · 1 comment

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@bstrie
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bstrie commented Feb 18, 2014

Reproduce:

#[repr(u8)] enum Bar { Foo }
fn main() {}

Error:

repr.rs:1:13: 1:29 error: unsupported representation for univariant enum
repr.rs:1 #[repr(u8)] enum Bar { Foo }
                      ^~~~~~~~~~~~~~~~
error: aborting due to previous error

@cmr was convinced that this ought to be fixed. #rust also produced an example of where this would be necessary, from GLib:

typedef enum {
    G_THREAD_ERROR_AGAIN /* Resource temporarily unavailable */
} GThreadError;
@alexcrichton
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Closing as a dupe of #10292.

bors added a commit to rust-lang-ci/rust that referenced this issue Jul 25, 2022
@bors
Auto merge of rust-lang#12371 - jhgg:fix/extra-env-non-string-value-h…
cc8140a 
…andling, r=lnicola

vscode: fix extraEnv handling numeric values

fixes rust-lang#12363 by bringing the types more inline with the reality, and making `Env` not a lie.
flip1995 pushed a commit to flip1995/rust that referenced this issue Mar 7, 2024
@GuillaumeGomez
Add ui regression test for rust-lang#12371
8473716
flip1995 pushed a commit to flip1995/rust that referenced this issue Mar 7, 2024
@bors
Auto merge of rust-lang#12372 - GuillaumeGomez:fix-nonminimal_bool-re…
e450a27 
…gression, r=flip1995

Fix `nonminimal_bool` lint regression

Fixes rust-lang#12371.
Fixes rust-lang#12369.

cc `@RalfJung`

The problem was an invalid condition. Shame on me...

changelog: Fix `nonminimal_bool` lint regression
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@alexcrichton @bstrie