Bug 16321 – ICE with delegate in UDA

the following code gives Internal error: backend/cgcod.c 1666 in 2.071 and master: struct NameAttribute { int delegate () foo; } static NameAttribute getNamedAttribute(alias S) () { NameAttribute res; foreach (attr; __traits(getAttributes, S)) { static if (is(typeof(attr) == NameAttribute)) res = attr; } return res; } struct MyStruct { @NameAttribute({ return 42; }) int a; } void PrintAll(T) (T arg) { foreach (m; __traits(allMembers, T)) { enum nameAttr = getNamedAttribute!(__traits(getMember, T, m)); } } void main () { PrintAll(MyStruct()); }

and this gives segfault too, but different: enum nameAttr = __traits(getAttributes, (__traits(getMember, T, m)))[0]; writeln(nameAttr.foo()); Internal error: backend/cod4.c 3206

Reduced a bit: ``` struct NameAttribute { int delegate() foo; } static NameAttribute getNamedAttribute(alias S)() { return __traits(getAttributes, S)[0]; } struct MyStruct { @NameAttribute({ return 42; }) int a; } void main() { MyStruct m; enum nameAttr = getNamedAttribute!(m.a); } ``` If you remove `static`, you get: ``` Error: need `this` for `getNamedAttribute` of type `pure nothrow @nogc @safe NameAttribute()` ```

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