[Bug c/27898] New: Compile failure with --combine and anonymous structures

[Bug c/27898] New: Compile failure with --combine and anonymous structures

[dwmw2 at infradead dot org]

$ cat foobar.c
union u {
        struct {
                int i;
        };
};

extern int somefunc(union u *);
$ gcc --combine -c foobar.c foobar.c
foobar.c:8: error: conflicting types for 'somefunc'
foobar.c:8: error: previous declaration of 'somefunc' was here

gcc version 4.1.0 20060304 (Red Hat 4.1.0-3)

Happens on both PowerPC and i386. If the internal structure is made
non-anonymous, it compiles.


-- 
           Summary: Compile failure with --combine and anonymous structures
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: dwmw2 at infradead dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27898

[Bug c/27898] Compile failure with --combine and anonymous structures

[aoliva at gcc dot gnu dot org]

-- 

aoliva at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |aoliva at gcc dot gnu dot
                   |dot org                     |org
             Status|UNCONFIRMED                 |ASSIGNED
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2006-07-05 06:02:55
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27898

[Bug c/27898] Compile failure with --combine and anonymous structures

[aoliva at gcc dot gnu dot org]

------- Comment #1 from aoliva at gcc dot gnu dot org  2006-07-05 06:04 -------
Created an attachment (id=11822)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=11822&action=view)
Patch that fixes the bug

This patch fixes the problem for me.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27898

[Bug c/27898] Compile failure with --combine and anonymous structures

[patchapp at dberlin dot org]

------- Comment #2 from patchapp at dberlin dot org  2006-07-06 03:45 -------
Subject: Bug number PR27898

A patch for this bug has been added to the patch tracker.
The mailing list url for the patch is
http://gcc.gnu.org/ml/gcc-patches/2006-07/msg00187.html


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27898

[Bug c/27898] Compile failure with --combine and anonymous structures

[dwmw2 at infradead dot org]

------- Comment #3 from dwmw2 at infradead dot org  2006-08-13 10:30 -------
That simple test case seems to have been fixed with your patch -- thanks.
Next failure reported as PR28706.

Full test cases in Red Hat bug #194327 at
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=194327


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27898

[Bug c/27898] Compile failure with --combine and anonymous structures

[aoliva at gcc dot gnu dot org]

------- Comment #4 from aoliva at gcc dot gnu dot org  2007-11-26 06:26 -------
Subject: Bug 27898

Author: aoliva
Date: Mon Nov 26 06:26:18 2007
New Revision: 130425

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=130425
Log:
PR c/27898
* c-typeck.c (tagged_types_tu_compatible_p): Enable exact
matches between anonymous union fields.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/c-typeck.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27898

[Bug c/27898] Compile failure with --combine and anonymous structures

[aoliva at gcc dot gnu dot org]

------- Comment #5 from aoliva at gcc dot gnu dot org  2007-11-26 16:24 -------
Fixed.


-- 

aoliva at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27898

[Bug c/27898] Compile failure with --combine and anonymous structures

[uros at gcc dot gnu dot org]

------- Comment #6 from uros at gcc dot gnu dot org  2009-03-25 07:59 -------
Subject: Bug 27898

Author: uros
Date: Wed Mar 25 07:58:55 2009
New Revision: 145052

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=145052
Log:
        PR c/27898
        * gcc.dg/pr27898.c: New test.

        PR tree-optimization/32139
        * gcc.c-torture/compile/pr32139.c: New test.


Added:
    trunk/gcc/testsuite/gcc.c-torture/compile/pr32139.c
    trunk/gcc/testsuite/gcc.dg/pr27898.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27898