Bug 20738 – Linker error when calling map, zip, and dirEntries

----- import std.algorithm; import std.file; import std.range; void main () { auto x = ["a", "b"] .map!(path => .zip(dirEntries(path, ".*", SpanMode.shallow), dirEntries(path, ".*", SpanMode.shallow))); } ----- $ dmd test.d ----- /tmp/.rdmd-1000/rdmd-test.d-C72EA7140D79CE87EECBAB65FCCCAE28/objs/test.o: In function `_D3std5range__T11ZipShortestVEQBc8typecons__T4FlagVAyaa18_616c6c4b6e6f776e53616d654c656e677468ZQByi0TSQDw9algorithm9iteration__T12FilterResultS_DQFn4file10dirEntriesFQElQEoEQGpQBc8SpanModebZ1fMFNaNbNfSQHrQCe8DirEntryZbTSQIkQCx11DirIteratorZQEiTQFnZQIz9__xtoHashFNbNeKxSQKhQKg__TQKdVQJti0TQHfTQHjZQKvZm': test.d:(.text._D3std5range__T11ZipShortestVEQBc8typecons__T4FlagVAyaa18_616c6c4b6e6f776e53616d654c656e677468ZQByi0TSQDw9algorithm9iteration__T12FilterResultS_DQFn4file10dirEntriesFQElQEoEQGpQBc8SpanModebZ1fMFNaNbNfSQHrQCe8DirEntryZbTSQIkQCx11DirIteratorZQEiTQFnZQIz9__xtoHashFNbNeKxSQKhQKg__TQKdVQJti0TQHfTQHjZQKvZm[_D3std5range__T11ZipShortestVEQBc8typecons__T4FlagVAyaa18_616c6c4b6e6f776e53616d654c656e677468ZQByi0TSQDw9algorithm9iteration__T12FilterResultS_DQFn4file10dirEntriesFQElQEoEQGpQBc8SpanModebZ1fMFNaNbNfSQHrQCe8DirEntryZbTSQIkQCx11DirIteratorZQEiTQFnZQIz9__xtoHashFNbNeKxSQKhQKg__TQKdVQJti0TQHfTQHjZQKvZm]+0x1c): undefined reference to `_D152TypeInfo_xS3std9algorithm9iteration__T12FilterResultS_DQBs4file10dirEntriesFAyaQdEQCtQBb8SpanModebZ1fMFNaNbNfSQDvQCd8DirEntryZbTSQEoQCw11DirIteratorZQEh6__initZ' test.d:(.text._D3std5range__T11ZipShortestVEQBc8typecons__T4FlagVAyaa18_616c6c4b6e6f776e53616d654c656e677468ZQByi0TSQDw9algorithm9iteration__T12FilterResultS_DQFn4file10dirEntriesFQElQEoEQGpQBc8SpanModebZ1fMFNaNbNfSQHrQCe8DirEntryZbTSQIkQCx11DirIteratorZQEiTQFnZQIz9__xtoHashFNbNeKxSQKhQKg__TQKdVQJti0TQHfTQHjZQKvZm[_D3std5range__T11ZipShortestVEQBc8typecons__T4FlagVAyaa18_616c6c4b6e6f776e53616d654c656e677468ZQByi0TSQDw9algorithm9iteration__T12FilterResultS_DQFn4file10dirEntriesFQElQEoEQGpQBc8SpanModebZ1fMFNaNbNfSQHrQCe8DirEntryZbTSQIkQCx11DirIteratorZQEiTQFnZQIz9__xtoHashFNbNeKxSQKhQKg__TQKdVQJti0TQHfTQHjZQKvZm]+0x41): undefined reference to `_D152TypeInfo_xS3std9algorithm9iteration__T12FilterResultS_DQBs4file10dirEntriesFAyaQdEQCtQBb8SpanModebZ1fMFNaNbNfSQDvQCd8DirEntryZbTSQEoQCw11DirIteratorZQEh6__initZ' ------ Tested with 2.090 and 2.091.

I cannot reproduce this with the latest version of master. Seems to have been fixed.