Bug 6598 – Function literals are rejected by structure initializers as non-constant

***** Description: ***** The following code will not compile with DMD64 D Compiler v2.055 (from github): ---------- auto func = function double(double x) {return x;}; // OK struct Foo {double function(double) func;} auto f1 = Foo(function double(double x) {return x;}); // Error void main() { auto f2 = Foo(function double(double x) {return x;}); // OK } ---------- Error: non-constant expression cast(double function(double))function pure nothrow @safe double(double x) ---------- Compilation fails only if the initializer is placed outside main function. ***** Suspecting: ***** This can be related to Issue 2634 (fixed).

Compiles with 2.059 Win32

Compiles with DMD64 D Compiler v2.059 on 64-bit Linux