Bug 5827 – Invalid implicit cast from "int function() ref" to "int function()"

The following invalid D code is accepted by DMD: import std.stdio; int a=0; ref int g(){ writeln("called g"); return ++a; } void main(){ int function() f=&g; //this should issue an error! writeln(cast(int)&a); writeln(f()); } Output: -144939256 called g -144939256 (&g is implicitly cast to "int function() ref", after that, the identical calling conventions for "ref int" (int*) and int result in an implicit reinterpret-cast from "ref int" to int.)

*** This issue has been marked as a duplicate of issue 3797 ***