On winXP (D1) I can compile/run this code without a problem.
Not even a warning.
void main() {
char[] s= "immutable literal?";
s[$-1] = '!';
writefln(s);
}
Codepad runs into a segmentation fault.
http://codepad.org/NQfsRoR5
Why doesn't it result in a compiler error or warning?
If it did I would have noticed this quirk earlier.