3617 – CTFE: wrong code for if(x) where x is int or smaller

Applies to while(), if(), assert(), etc.
Also happens if you have (say) uint u = 0x8000_0000; u<<=1;
-- since this sets the high bit of the value to 1.
TEST CASE:
----
int foo() {
 int u = cast(int)(0x1_0000_0000L);
 while (u) {
 if (u) { 
 assert(u!=0); 
 }
 assert(u!=0);
 }
 return 2;
}
static assert(foo()==2);
--------------------
PATCH: expression.c, around line 1575.
Need to convert the value to an appropriate sized integer.
int IntegerExp::isBool(int result)
{
+ toInteger();
 return result ? value != 0 : value == 0;
}

http://www.dsource.org/projects/dmd/changeset/296 

Fixed dmd 1.054 and 2.038