This bug happens in compiling Phobos unittests. To reproduce:
1. edit std\utf.d and add the lines:
pragma(msg, S);
pragma(msg, isRandomAccessRange!S);
after the lines in the wchar overload of decodeImpl() that say:
//@@@BUG@@@ 8521 forces this to be done outside of decodeImpl
//enum canIndex = is(S : const wchar[]) || (isRandomAccessRange!S && hasSlicing!S && hasLength!S);
2. compile std\array.d for unittests with:
dmd std\array -main -unittest
and you'll be greeted with:
dmd std\array -unittest -main
wchar[]
false
wstring
false
std\array.d(1543): Error: template std.array.split cannot deduce function from argument types !()(wstring, string), candidates are:
std\array.d(1402): std.array.split(S)(S s) if (isSomeString!S)
std\array.d(1508): std.array.split(Range, Separator)(Range range, Separator sep) if (isForwardRange!Range && is(typeof(ElementType!Range.init == Separator.init)))
std\array.d(1515): std.array.split(Range, Separator)(Range range, Separator sep) if (isForwardRange!Range && isForwardRange!Separator && is(typeof(ElementType!Range.init == ElementType!Separator.init)))
std\array.d(1522): std.array.split(alias isTerminator, Range)(Range range) if (isForwardRange!Range && is(typeof(unaryFun!isTerminator(range.front))))
Tested on Windows. Probably related to https://issues.dlang.org/show_bug.cgi?id=8521, but I made it a separate issue because this does not present with an ICE.
Comment #1 by thomas.bockman — 2016-03-11T20:16:08Z