Bug 9791 – [ICE] (struct.c line 668) map with a missing tuple import

This is wrong code because it doesn't import std.typecons.tuple: import std.range: iota; import std.algorithm: map; void main() { iota(1).map!(x => tuple(x)); } DMD 2.063alpha gives: Assertion failure: 'type->ty != Tstruct || ((TypeStruct *)type)->sym == this' on line 668 in file 'struct.c'

Lately I am hitting this problem often.

The error message is now: Assertion failure: 'type->ty != Tstruct || ((TypeStruct *)type)->sym == this' on line 722 in file 'struct.c' Raising importance to major because I am hitting this problem all the time.

After this change: https://github.com/D-Programming-Language/dmd/commit/dec31f42148fe14a24250592ee21e376ac1d8a88 Now the code shown above gives no ICE: test.d(4): Error: undefined identifier tuple ...\dmd2\src\phobos\std\algorithm.d(404): Error: template instance test.main.__lambda2!(int) error instantiating ...\dmd2\src\phobos\std\algorithm.d(390): instantiated from here: MapResult!(__lambda2, Result) test.d(4): instantiated from here: map!(Result) ...\dmd2\src\phobos\std\algorithm.d(390): Error: template instance test.main.MapResult!(__lambda2, Result) error instantiating test.d(4): instantiated from here: map!(Result) test.d(4): Error: template instance test.main.map!(__lambda2).map!(Result) error instantiating So do you want me to close down this issue?

(In reply to comment #3) > So do you want me to close down this issue? Yes. please.

(In reply to comment #4) > (In reply to comment #3) > > So do you want me to close down this issue? > > Yes. please. OK, closed. Thank you for your work Hara.