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Error if missing map key type

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Fixes #4096
This commit is contained in:
Jeroen van Rijn
2024-08-17 17:12:27 +02:00
parent 478f529744
commit ebbb70f11d
1 changed files with 12 additions and 0 deletions
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src/check_type.cpp
+12
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@@ -2741,6 +2741,18 @@ gb_internal void check_map_type(CheckerContext *ctx, Type *type, Ast *node) {
GB_ASSERT(type->kind == Type_Map); GB_ASSERT(type->kind == Type_Map);
ast_node(mt, MapType, node); ast_node(mt, MapType, node);
if (mt->key == NULL) {
if (mt->value != NULL) {
Type *value = check_type(ctx, mt->value);
gbString str = type_to_string(value);
error(node, "Missing map key type, got 'map[]%s'", str);
gb_string_free(str);
return;
}
error(node, "Missing map key type, got 'map[]T'");
return;
}
Type *key = check_type(ctx, mt->key); Type *key = check_type(ctx, mt->key);
Type *value = check_type(ctx, mt->value); Type *value = check_type(ctx, mt->value);