Bug 13392 – class + alias this + cast(void*) == overzealous cast

Given a class with alias this that produces another class, then "cast(void*)" will call the alias this, and try to do a cast on the alias this'ed class. I think this is wrong, since, by definition, both classes are equally good candidates for the cast, so the alias this should not happen. //---- void foo(T)(T t) { void* p = cast(void*) t; //Callas alias this } class A { } class B { alias a this; @property A a(){assert(0);} //Here } void main() { foo(B.init); } //---- --- killed by signal 11 //----

Issue found in Phobos: http://forum.dlang.org/thread/[email protected]#post-mhqguwhkezqoymmfwusv:40forum.dlang.org Also related: https://issues.dlang.org/show_bug.cgi?id=6777

I think this is actually a duplicate of 6777, all casting is disabled on the class when an alias this is present. *** This issue has been marked as a duplicate of issue 6777 ***

Issue 6777 has been fixed, but this still segfaults. Reopening.

PR: https://github.com/dlang/dmd/pull/9017

Commits pushed to master at https://github.com/dlang/dmd https://github.com/dlang/dmd/commit/6e65ca834e8bbde62d92f9e21530b6ac7a07c0f0 Fix Issue 13392 and 11294 - class + alias this + cast(void*) == overzealous cast https://github.com/dlang/dmd/commit/42c71012e75b80431e83367dcbb0a37a5fea91bb Merge pull request #9017 from RazvanN7/Issue_11294 Fix Issue 13392 and 11294 - class + alias this + cast(void*) == overzealous cast merged-on-behalf-of: Nicholas Wilson <[email protected]>