wrong code: code with undeclared variables compiles (cf b/14813)

[Adrian Matoga via Digitalmars-d]

On Monday, 20 July 2015 at 07:01:34 UTC, Timothee Cour wrote:
> reposting https://issues.dlang.org/show_bug.cgi?id=14813 here 
> as it seems quite weird:

Try this and think again:

import std.stdio;

void main()
{
     alias A = void delegate(int);
     //WTF?
     A temp1 = (some_inexistant_field) {  
writeln(typeof(some_inexistant_field).stringof); };
     temp1(42);
     //WTF?
     A temp2 = delegate(some_inexistant_field) { writeln(typeof 
(some_inexistant_field).stringof); };
     temp2(1337);
      alias A2 = void delegate(int,double);
     //WTF?
     A2 temp3 = (some_inexistant_field,sadfasfd) { 
writeln(typeof(some_inexistant_field).stringof, " ", 
typeof(sadfasfd).stringof); };
     temp3(42, 3.14);
}