[Bug c/23104] New: [4.1 Regression] C does not reject the same function in two different TUs with -combine

["pinskia at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

Compile the following sources with -combine:
---- file1.c ----
int f(void) {}
---- end ----
---- file2.c ----
int f(void) {}
---- end ----

We used to reject this in 4.0.0.
This was caused by:
2005-06-28  Eric Christopher  <echristo@redhat.com>

        PR c/22052
        PR c/21975
        * c-decl.c (diagnose_mismatched_decls): Define DECL_EXTERN_INLINE.
        Use. Fix detection of invalid extern inline redefinition.

-- 
           Summary: [4.1 Regression] C does not reject the same function in
                    two different TUs with -combine
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Keywords: accepts-invalid
          Severity: normal
          Priority: P2
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: pinskia at gcc dot gnu dot org
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23104