add test case for special symbols that don't mangle their parents

Author: rainers

src/core/demangle.d

@@ -2305,14 +2305,16 @@ version(unittest)
          "pure nothrow ref @nogc @safe std.typecons.Typedef!(std.typecons.__unittestL6513_208().MyClass, null, null).Typedef "
         ~"std.typecons.Typedef!(std.typecons.__unittestL6513_208().MyClass, null, null).Typedef.__ctor(std.typecons.__unittestL6513_208().MyClass)"],
         ["_D3std6getopt__TQ1ATAyaTDFNaNbNiNfQ1eZvTQ2aTDQ2aZQ4DFNfKAQ3hQ4aQ3jQ4gQ2fZSQL7C12GetoptResult",
-         "@safe std.getopt.GetoptResult std.getopt.getopt!(immutable(char)[], pure nothrow @nogc @safe void "
+         "@safe std.getopt.GetoptResult std.getopt.getopt!(immutable(char)[], pure nothrow @nogc @safe void "
         ~"delegate(immutable(char)[]), immutable(char)[], pure nothrow @nogc @safe void delegate(immutable(char)[]))."
         ~"getopt(ref immutable(char)[][], immutable(char)[], pure nothrow @nogc @safe void delegate(immutable(char)[]), "
         ~"immutable(char)[], pure nothrow @nogc @safe void delegate(immutable(char)[]))"],
         ["_D3std5regex8internal9kickstart__T7ShiftOrTaZQ1B11ShiftThread__T3setS_DQQ6J10setInvMaskMFNaNbNiNfkkZvZQ3IMFNaNfwZv",
          "pure @safe void std.regex.internal.kickstart.ShiftOr!(char).ShiftOr.ShiftThread.set!(std.regex.internal.kickstart.ShiftOr!(char).ShiftOr.ShiftThread.setInvMask(uint, uint)).set(dchar)"],
-        ["_D3std5stdio4File__T8lockImplX10LockFileExTykZQ2GMFmmykZi",
+        ["_D3std5stdio4File__T8lockImplX10LockFileExTykZQ2GMFmmykZi", // C function as template alias parameter
          "int std.stdio.File.lockImpl!(LockFileEx, immutable(uint)).lockImpl(ulong, ulong, immutable(uint))"],
+        ["_D3std8typecons__T11dynamicCastTCQL3B10StructuralZ__TQ3FTC6ObjectZQ4IFNaNbNeNgCQ2BZQ5b", // Object mangled without module
+         "pure nothrow @trusted std.typecons.Structural std.typecons.dynamicCast!(std.typecons.Structural).dynamicCast!(Object).dynamicCast(inout(Object))"],
     ];