Bug 1214 – Using tuples to instanciate a delegate literal crashes compiler

I'm pretty sure this should be legal,and if it's not it should definetly not crash dmd. The following code generates a crash with the message, "Assertion failure 0 on line 710 in file 'glue.c'." import std.stdio; template Tuple(P...) { alias P Tuple; } alias Tuple!(int) where_t; alias bool delegate(where_t) dgt; int main(char[][] args) { doit((where_t j){ return(j[0] == 9); }); return 0; } void doit(dgt exp) { for(int i = 0; i < 11; i++) if(exp(i)) writefln("Success"); else writefln("Failure"); }

It seems that whenever I try to make progress on my Project Which Must Not Be Named, I find another one of these issues. In this case, in order to create a mock object, I need to create delegates based on the ReturnType and ParameterTypeTuple of a given function, and this prevents it. Anyway, yes, a duplicate, though now in DMD2 it's moved to glue.c:717. *** This bug has been marked as a duplicate of 854 ***