Bug 15034 – ICE(glue.c line 1026) Assertion failure: '!fd->vthis->csym'

The following code causes an ICE in DMD 2.068.1. ----------- // a.d module a; /* std.algorithm: fail std.array: fail std.bigint: fail std.datetime: fail std.json: fail std.meta: OK std.string: fail std.traits: OK */ import std.algorithm; ----------- // b.d module b; void pass(alias fn)(int a) { import std.algorithm; fn(forward!a); } unittest { pass!((a){})(1); } ----------- build-cmd: dmd -unittest -main a b dmd-output: Assertion failure: '!fd->vthis->csym' on line 1026 in file 'glue.c'

*** This issue has been marked as a duplicate of issue 15030 ***