https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88169
--- Comment #11 from kargl at gcc dot gnu.org --- (In reply to Neil Carlson from comment #9) > Actually I think the usage in comment 8 is an intentional extension. There > is a test in the dg test suite that does exactly this if I remember > correctly. The test was namelist_use.f90. I was told that gfortran will give > an error if compiled with something like -std=f95. See > https://github.com/nncarlson/gfortran.dg/issues/3 Yep. Just found the code in gfc_match_namelist.c that indeed accepts the code (-std=gnu is the default standard) in comment 8. A quick test with -std=f2003 gives gfcx -o z -std=f2003 a.f90 && ./z a.f90:11:17: 11 | namelist /foo/ i | 1 Error: GNU Extension: Namelist group name 'foo' at (1) already is USE associated and cannot be respecified. So, AFAICT, the patch in comment 7 fixes the issue.
