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Add minimum requirement of 2 variants for #no_nil

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gingerBill
2019-07-09 10:49:45 +01:00
parent 4ab9edeb53
commit 7c99f52187
1 changed files with 5 additions and 0 deletions
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5
src/check_type.cpp
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@@ -716,6 +716,11 @@ void check_union_type(CheckerContext *ctx, Type *union_type, Ast *node, Array<Op
union_type->Union.variants = variants;
union_type->Union.no_nil = ut->no_nil;
if (union_type->Union.no_nil) {
if (variants.count < 2) {
error(ut->align, "A union with #no_nil must have at least 2 variants");
}
}
if (ut->align != nullptr) {
i64 custom_align = 1;