gfortran leaking empty files in /tmp

[François-Xavier Coudert]

Hi all,

Every time one calls gfortran on a F90 source file that needs
preprocessing, a empty file is left in /tmp:

$ ls /tmp/*.f*
zsh: no matches found: /tmp/*.f*
$ touch a.F
$ gfortran -c a.F
$ ls /tmp/*.f*
zsh: no matches found: /tmp/*.f*
$ touch a.F90
$ gfortran -c a.F90
$ ls /tmp/*.f*
/tmp/ccC5rocz.f

FX