AFAICT PR 66707 has been fixed/ prevented/hidden by revision r226732. I have committed the following as obvious
Index: gcc/testsuite/ChangeLog =================================================================== --- gcc/testsuite/ChangeLog (revision 233007) +++ gcc/testsuite/ChangeLog (working copy) @@ -1,3 +1,8 @@ +2016-01-30 Dominique d'Humieres <domi...@lps.ens.fr> + + PR fortran/66707 + gfortran.dg/common_23.f90: New test. + 2016-01-29 Bill Schmidt <wschm...@linux.vnet.ibm.com> PR target/65546 Index: gcc/testsuite/gfortran.dg/common_23.f90 =================================================================== --- gcc/testsuite/gfortran.dg/common_23.f90 (nonexistent) +++ gcc/testsuite/gfortran.dg/common_23.f90 (working copy) @@ -0,0 +1,10 @@ +! { dg-do compile } +! +! PR fortran/66707 +! Check the compilation on wrong usage of common +! Contributed by Gerhard Steinmetz <gerhard.steinmetz.fort...@t-online.de> +program p + integer, pointer :: a + common a, a ! { dg-error "is already in a COMMON block" } + common a +end I have tested (on x86_64-apple-darwin15) that revision r226732 can be trivially back ported to the gcc5 branch. Is it OK to do this back port? TIA Dominique