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std.enums.tagName: preserve sentinel in return value

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190n 2025-03-04 11:12:00 -08:00 • committed by Alex Rønne Petersen
parent 5f7dfc3577
commit 1e0739f0c6
1 changed files with 1 additions and 1 deletions
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lib/std/enums.zig
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@ -55,7 +55,7 @@ pub fn values(comptime E: type) []const E {
/// A safe alternative to @tagName() for non-exhaustive enums that doesn't
/// panic when `e` has no tagged value.
/// Returns the tag name for `e` or null if no tag exists.
pub fn tagName(comptime E: type, e: E) ?[]const u8 {
pub fn tagName(comptime E: type, e: E) ?[:0]const u8 {
return inline for (@typeInfo(E).@"enum".fields) |f| {
if (@intFromEnum(e) == f.value) break f.name;
} else null;