https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61597
Adrien Hamelin <adrien.hamelin+gcc at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Attachment #33002|0 |1 is obsolete| | --- Comment #9 from Adrien Hamelin <adrien.hamelin+gcc at gmail dot com> --- Created attachment 33003 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33003&action=edit Preprocessed file Sorry to do such mutliple post, this one should be the last, i removed the custom iterator - it has nothing to do with the bug. So same as before, the function line 10 does not work when it takes a copy parameter, and the function line 17 does work when it takes the parameter as reference. The new code: http://coliru.stacked-crooked.com/a/9a724fdda9ef1d06