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Sema: don't set union tag type if it's not an enum

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mlugg 2024-08-14 08:48:31 +01:00 committed by Jacob Young
parent 46388d338a
commit 5a8780838f
1 changed files with 1 additions and 1 deletions
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src/Sema.zig
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@ -36641,11 +36641,11 @@ fn semaUnionFields(pt: Zcu.PerThread, arena: Allocator, union_ty: InternPool.Ind
}
} else {
// The provided type is the enum tag type.
union_type.setTagType(ip, provided_ty.toIntern());
const enum_type = switch (ip.indexToKey(provided_ty.toIntern())) {
.enum_type => ip.loadEnumType(provided_ty.toIntern()),
else => return sema.fail(&block_scope, tag_ty_src, "expected enum tag type, found '{}'", .{provided_ty.fmt(pt)}),
};
union_type.setTagType(ip, provided_ty.toIntern());
// The fields of the union must match the enum exactly.
// A flag per field is used to check for missing and extraneous fields.
explicit_tags_seen = try sema.arena.alloc(bool, enum_type.names.len);