Bug 4746 – CTFE regression + CTFE/normal execution differences (splitlines).

This is two bugs at once. The first is a regression in 2.048 from 2.047 where splitlines is no longer CTFEable. The second is that, in 2.047, splitlines doesn't work when CTFE'd. // 2.048 void main() { static auto s = splitlines("a\nb"); // Error: not CTFEable writeln(s[0]); } // 2.047 void main() { auto s = splitlines("a\nb"); // Note non-static writeln(s[0]); // Writes 'a'... correct! } // 2.047 void main() { static auto s = splitlines("a\nb"); // CTFE'd this time writeln(s[0]); // Writes nothing... incorrect! } Note that the 2.048 was run on Windows 7 and the 2.047 was run on Mac OS X Snow Leopard. Also note that string.split appears to have the same issue (was CTFEable in 2.047, but not in 2.048).

Compiler versions before 2.048 silently generated wrong code for CTFE situations like this one. This bug was fixed in 2.048, and it now (correctly) says that it cannot compile it.