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Change union tag size to account for #align.

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The prior behavior was adjusting the tag size based on the alignment of
the types in the union, even when the union has a custom alignment
specified with `#align`. This changes the behavior so that a custom
alignment, if specified, takes precedence over the alignment of the
types.
This commit is contained in:
Barinzaya
2025-05-24 12:41:28 -04:00
parent 0a6dced9da
commit 717b9f1578
1 changed files with 9 additions and 5 deletions
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src/types.cpp
+9 -5
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@@ -3059,11 +3059,15 @@ gb_internal i64 union_tag_size(Type *u) {
compiler_error("how many variants do you have?! %lld", cast(long long)u->Union.variants.count); compiler_error("how many variants do you have?! %lld", cast(long long)u->Union.variants.count);
} }
for_array(i, u->Union.variants) { if (u->Union.custom_align > 0) {
Type *variant_type = u->Union.variants[i]; max_align = gb_max(max_align, u->Union.custom_align);
i64 align = type_align_of(variant_type); } else {
if (max_align < align) { for_array(i, u->Union.variants) {
max_align = align; Type *variant_type = u->Union.variants[i];
i64 align = type_align_of(variant_type);
if (max_align < align) {
max_align = align;
}
} }
} }