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_ allowed as an errdefer capture assigning it to @"_" rather than discarding #20370

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xdBronch opened this issue Jun 21, 2024 · 0 comments · Fixed by #21368
Closed

_ allowed as an errdefer capture assigning it to @"_" rather than discarding #20370

xdBronch opened this issue Jun 21, 2024 · 0 comments · Fixed by #21368
Labels
bug Observed behavior contradicts documented or intended behavior frontend Tokenization, parsing, AstGen, Sema, and Liveness.
Milestone
0.14.0

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@xdBronch
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Zig Version

0.14.0-dev.107+e03026507

Steps to Reproduce and Observed Behavior

pub fn main() !void {
    errdefer |_| std.debug.print("err {}\n", .{@"_"});
    return error.a;
}

prints err error.a at runtime

Expected Behavior

should give an error in the same way catch |_| does
discard of error capture; omit it instead
@xdBronch xdBronch added the bug Observed behavior contradicts documented or intended behavior label Jun 21, 2024
@xdBronch xdBronch mentioned this issue Jun 21, 2024
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@Vexu Vexu added the frontend Tokenization, parsing, AstGen, Sema, and Liveness. label Jun 21, 2024
@Vexu Vexu added this to the 0.14.0 milestone Jun 21, 2024
@WillLillis WillLillis mentioned this issue Sep 10, 2024
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bug Observed behavior contradicts documented or intended behavior frontend Tokenization, parsing, AstGen, Sema, and Liveness.
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Milestone
0.14.0
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fix: disallow discard as errdefer capture WillLillis/zig
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@Vexu @xdBronch