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From: "marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug modula2/108551] gcc/m2/gm2-libs-pim/Termbase.mod:128:1: error:
 control reaches end of non-void function [-Werror=return-type]
Date: Thu, 26 Jan 2023 10:28:06 +0000
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X-Bugzilla-Component: modula2
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D108551

--- Comment #3 from Martin Li=C5=A1ka <marxin at gcc dot gnu.org> ---
I might reduced that:

$ cat Termbase.mod
IMPLEMENTATION MODULE Termbase ;
TYPE
   ReadMethods =3D POINTER TO RECORD
                               s   : StatusProcedure ;
                            END ;
   WriteMethod =3D POINTER TO RECORD
                            END ;
VAR
   rStack: ReadMethods ;
   wStack: WriteMethod ;
PROCEDURE AssignRead (rp: ReadProcedure; sp: StatusProcedure;
                      VAR Done: BOOLEAN) ;
BEGIN
   IF rStack=3DNIL
   THEN
   END
END AssignRead ;
(*
*)
PROCEDURE UnAssignRead (VAR Done: BOOLEAN) ;
END UnAssignRead ;
PROCEDURE Read (VAR ch: CHAR) ;
END Read ;
PROCEDURE KeyPressed () : BOOLEAN ;
BEGIN
   IF rStack=3DNIL
   THEN
      RETURN( rStack^.s() )
    ELSE
      RETURN( rStack^.s() )
   END
END KeyPressed ;
PROCEDURE AssignWrite (wp: WriteProcedure; VAR Done: BOOLEAN) ;
BEGIN
   IF wStack=3DNIL
   THEN=20=20=20
   END
END AssignWrite ;
PROCEDURE UnAssignWrite (VAR Done: BOOLEAN) ;
END UnAssignWrite ;
PROCEDURE Write (VAR ch: CHAR) ;
END Write ;
END Termbase.

$ /dev/shm/objdir/./gcc/gm2 -B/dev/shm/objdir/./gcc/ Termbase.mod
-Werror=3Dreturn-type -I/home/marxin/Programming/gcc/gcc/m2/gm2-libs-pim
-I/home/marxin/Programming/gcc/gcc/m2/gm2-libs
Termbase.mod: In function =E2=80=98main=E2=80=99:
Termbase.mod:1:32: error: control reaches end of non-void function
[-Werror=3Dreturn-type]
    1 | IMPLEMENTATION MODULE Termbase ;
      |                                ^
cc1gm2: some warnings being treated as errors=