Bug 8392 – DMD sometime fail when using a non static function template within a function template

The problem is quite weird, and here the minimal test case I found that produced the error. You'll need at least 2 modules and function template within function template. module a; struct A { } auto fooa(alias handler)(A a) { return handler(null); } module b; import a; class B { this(B); } void foob(A a, B b) { a.fooa!((arg){ return new B(b); }); } Both file in the same folder and issuing dmd *.d will cause the following error : b.d(9): Error: function b.foob compiler error, parameter 'b', bugzilla 2962? dmd: glue.c:717: virtual void FuncDeclaration::toObjFile(int): Assertion `0' failed. Abandon I obviously checked bug 2962, but it don't seem to be the same one, even if the same assert fails.

Commit pushed to master at https://github.com/D-Programming-Language/dmd https://github.com/D-Programming-Language/dmd/commit/6ded1ceb8a3b3fd65480c89d12f9137fde08eec7 fix Issue 8392 - DMD sometime fail when using a non static function template within a function template