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From: "andrew at fluidgravity dot co.uk" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug fortran/110081] New: Unhelpful error message: "(null):0:
 confused by earlier errors, bailing out"
Date: Thu, 01 Jun 2023 14:07:55 +0000
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X-Bugzilla-Type: new
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X-Bugzilla-Product: gcc
X-Bugzilla-Component: fortran
X-Bugzilla-Version: 12.2.1
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X-Bugzilla-Who: andrew at fluidgravity dot co.uk
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D110081

            Bug ID: 110081
           Summary: Unhelpful error message: "(null):0: confused by
                    earlier errors, bailing out"
           Product: gcc
           Version: 12.2.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: fortran
          Assignee: unassigned at gcc dot gnu.org
          Reporter: andrew at fluidgravity dot co.uk
  Target Milestone: ---

The following code compiles with neither gfortran-11 nor gfortran-12, but d=
oes
compile with gfortran-10 and earlier. The error message just says "(null):0:
confused by earlier errors, bailing out" without giving any indication what=
 the
problem is. (The actual problem seems to be the clash between the variable =
name
'p' in the common block and the module name 'p'.)

MODULE commons
   IMPLICIT NONE
   INTEGER :: p
   COMMON /c/ p
END
MODULE p
   IMPLICIT NONE
   SAVE
   CONTAINS
   SUBROUTINE sub
   USE commons
   END SUBROUTINE sub
END

$ gfortran-11 -c code.f90=20

(null):0: confused by earlier errors, bailing out=