https://issues.dlang.org/show_bug.cgi?id=19545
--- Comment #5 from John Colvin <john.loughran.col...@gmail.com> ---
(In reply to John Colvin from comment #1)
> void main()
> {
> pragma(msg, __traits(compiles,
> inputRangeObject(RegexMatch!string.init)));
> inputRangeObject(RegexMatch!string.init);
> }
>
> struct RegexMatch(T)
> {
> }
>
> class InputRangeObject(R)
> {
> this(R)
> {
> }
>
> R front()
> {
> }
> }
>
> InputRangeObject!R inputRangeObject(R)(R range)
> {
> return new InputRangeObject!R(range);
> }
>
> I've tried bisecting to find when in the history this started to go wrong,
> but it's hard (old dmds don't necessarily build on linux any more due to
> missing gcc headers).
>
> Here is the output from run.dlang.io, which suggests that there was a
> problem existing before 2.060, because while there it doesn't mistakenly
> continue with compilation it still reports `true` when it should say `false`:
>
> Up to 2.060 : Failure with output:
> -----
> true
> onlineapp.d(17): Error: function
> onlineapp.InputRangeObject!(RegexMatch!(string)).InputRangeObject.front has
> no return statement, but is expected to return a value of type
> RegexMatch!(string)
> -----
>
> 2.061 : Failure with output:
> -----
> true
> onlineapp.o: In function
> `_D9onlineapp68__T16inputRangeObjectTS9onlineapp20__T10RegexMatchTAyaZ10Regex
> MatchZ16inputRangeObjectFS9onlineapp20__T10RegexMatchTAyaZ10RegexMatchZC9onli
> neapp68__T16InputRangeObjectTS9onlineapp20__T10RegexMatchTAyaZ10RegexMatchZ16
> InputRangeObject':
> /sandbox/onlineapp.d:24: undefined reference to
> `_D9onlineapp68__T16InputRangeObjectTS9onlineapp20__T10RegexMatchTAyaZ10Regex
> MatchZ16InputRangeObject7__ClassZ'
> /sandbox/onlineapp.d:24: undefined reference to
> `_D9onlineapp68__T16InputRangeObjectTS9onlineapp20__T10RegexMatchTAyaZ10Regex
> MatchZ16InputRangeObject6__ctorMFS9onlineapp20__T10RegexMatchTAyaZ10RegexMatc
> hZC9onlineapp68__T16InputRangeObjectTS9onlineapp20__T10RegexMatchTAyaZ10Regex
> MatchZ16InputRangeObject'
> collect2: error: ld returned 1 exit status
> --- errorlevel 1
> -----
This is the test case to pay attention to.
--
