Adding test for bug #3684.
Adding test for bug #3684.

Zimmi48/coq,Matafou/coq,barras/coq,ale-f/coq,8l/coq,coq/coq,aspiwack/coq,TOSPIO/coq,TOSPIO/coq,ppedrot/coq,8l/coq,pirapira/coq2rust,letouzey/coq-wip,gares/coq,amintimany/coq,8l/coq,Zimmi48/coq,herbelin/github-coq,gares/coq,Ptival/coq,coq/coq,gmalecha/coq,ale-f/coq,aspiwack/coq,SkySkimmer/coq,herbelin/github-coq,shindere/coq,ejgallego/coq,ppedrot/coq,maximedenes/coq,Lionel-Rieg/coq,gmalecha/coq,silene/coq,asr/coq,gares/coq,Lionel-Rieg/coq,jpdeplaix/coq,gares/coq,ejgallego/coq,SkySkimmer/coq,JasonGross/coq,mattam82/coq,Zimmi48/coq,ppedrot/coq,maximedenes/coq,gmalecha/coq,pirapira/coq2rust,barras/coq,william-lawvere/coq,pirapira/coq2rust,TOSPIO/coq,gares/coq,coq/coq,maximedenes/coq,JasonGross/coq,herbelin/github-coq,maximedenes/coq,TheTypoMaster/coq,TheTypoMaster/coq,william-lawvere/coq,JasonGross/coq,Lionel-Rieg/coq,amintimany/coq,TheTypoMaster/coq,letouzey/coq-wip,mlasson/coq,Matafou/coq,Matafou/coq,letouzey/coq-wip,mattam82/coq,SkySkimmer/coq,SkySkimmer/coq,barras/coq,mattam82/coq,ppedrot/coq,silene/coq,letouzey/coq-wip,asr/coq,JasonGross/coq,maximedenes/coq,mlasson/coq,ejgallego/coq,letouzey/coq-wip,aspiwack/coq,ppedrot/coq,Zimmi48/coq,jpdeplaix/coq,ale-f/coq,ejgallego/coq,amintimany/coq,coq/coq,shindere/coq,william-lawvere/coq,silene/coq,mlasson/coq,jpdeplaix/coq,Ptival/coq,asr/coq,shindere/coq,Ptival/coq