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checker: make sure generic struct instantiation uses a known type. closes #13506
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@ -130,6 +130,13 @@ pub fn (mut c Checker) struct_init(mut node ast.StructInit) ast.Type {
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}
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struct_sym := c.table.sym(node.typ)
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if struct_sym.info is ast.Struct {
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// check if the generic param types have been defined
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for ct in struct_sym.info.concrete_types {
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ct_sym := c.table.sym(ct)
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if ct_sym.kind == .placeholder {
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c.error('unknown type `$ct_sym.name`', node.pos)
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}
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}
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if struct_sym.info.generic_types.len > 0 && struct_sym.info.concrete_types.len == 0
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&& !node.is_short_syntax {
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if c.table.cur_concrete_types.len == 0 {
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