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@tagName behaves incorrectly when enums have non-default values at runtime #1080

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tgschultz opened this Issue Jun 8, 2018 · 1 comment

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tgschultz commented Jun 8, 2018

const std = @import("std");

const TestEnum = enum(u32) {
    One = 64,
    Two = 128,
};

pub fn main() void {
    var test_enum = TestEnum.One;
    std.debug.warn("{}\n", @tagName(test_enum));
}

output, as from tio.run:

index out of bounds
�[37;1m/home/runner/.code.tio:10:28�[0m: �[2m0x2200da in ??? (.code)�[0m
    std.debug.warn("{}\n", @tagName(test_enum));
                           �[32;1m^�[0m
�[37;1m/opt/zig/lib/zig/std/special/bootstrap.zig:86:22�[0m: �[2m0x220089 in ??? (.code)�[0m
            root.main();
                     �[32;1m^�[0m
�[37;1m/opt/zig/lib/zig/std/special/bootstrap.zig:70:20�[0m: �[2m0x220029 in ??? (.code)�[0m
    return callMain();
                   �[32;1m^�[0m
�[37;1m/opt/zig/lib/zig/std/special/bootstrap.zig:64:39�[0m: �[2m0x21fd9f in ??? (.code)�[0m
    std.os.posix.exit(callMainWithArgs(argc, argv, envp));
                                      �[32;1m^�[0m
�[37;1m/opt/zig/lib/zig/std/special/bootstrap.zig:39:5�[0m: �[2m0x21fc40 in ??? (.code)�[0m
    @noInlineCall(posixCallMainAndExit);
    �[32;1m^�[0m
/srv/wrappers/zig: line 4:  2156 Aborted                 (core dumped) ./.bin.tio "$@" < .input.tio

Real time: 0.665 s
User time: 0.479 s
Sys. time: 0.155 s
CPU share: 95.23 %
Exit code: 134
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tiehuis commented Jun 8, 2018

Related to #976.

@andrewrk andrewrk added this to the 0.3.0 milestone Jun 9, 2018

@andrewrk andrewrk added the bug label Jun 9, 2018

@andrewrk andrewrk closed this in 03c16c6 Jun 11, 2018

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