[Bug c/18479] __attribute__ ((visibility("default"))) in C causes internal compiler error

[Bug c/18479] __attribute__ ((visibility("default"))) in C causes internal compiler error

[s_gccbugzilla at nedprod dot com]

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           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|c++                         |c


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18479

[Bug c++/18479] New: __attribute__ ((visibility("default"))) in C causes internal compiler error

[s_gccbugzilla at nedprod dot com]

Using GCC v4.0_20041107 on FreeBSD v5.3:

struct __attribute__ ((visibility("default"))) Foo { int foo; };
int main(void) { Foo foo; return 0; }

If compiled as a C++ file, all is fine. If compiled as C you get:

internal compiler error: tree check: expected class 'declaration', have 
'exceptional' (identifier_node) in handle_visibility_attribute, at c-common.c:
4648
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.

I think it's perfectly valid for C code to mark structures as having visibility 
though it means nothing useful (so it could simply be ignored). It certainly 
shouldn't generate an internal compiler error.

Cheers,
Niall

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           Summary: __attribute__ ((visibility("default"))) in C causes
                    internal compiler error
           Product: gcc
           Version: 4.0.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: s_gccbugzilla at nedprod dot com
                CC: gcc-bugs at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18479

[Bug c/18479] [4.0 Regression] __attribute__ ((visibility("default"))) in C causes internal compiler error

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-11-14 17:40 -------
: Search converges between 2004-07-21-trunk (#492) and 2004-07-23-trunk (#493).

Confirmed.

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           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
           Keywords|                            |ice-on-valid-code
   Last reconfirmed|0000-00-00 00:00:00         |2004-11-14 17:40:55
               date|                            |
            Summary|__attribute__               |[4.0 Regression]
                   |((visibility("default"))) in|__attribute__
                   |C causes internal compiler  |((visibility("default"))) in
                   |error                       |C causes internal compiler
                   |                            |error
   Target Milestone|---                         |4.0.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18479

[Bug c/18479] [4.0 Regression] __attribute__ ((visibility("default"))) in C causes internal compiler error

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-11-26 00:52 -------
Patch here: <http://gcc.gnu.org/ml/gcc-patches/2004-11/msg02206.html>.

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           What    |Removed                     |Added
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           Keywords|                            |patch


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18479

[Bug c/18479] [4.0 Regression] __attribute__ ((visibility("default"))) in C causes internal compiler error

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-11-26 00:55 -------
Mine.

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           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |pinskia at gcc dot gnu dot
                   |dot org                     |org
             Status|NEW                         |ASSIGNED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18479

[Bug c/18479] [4.0 Regression] __attribute__ ((visibility("default"))) in C causes internal compiler error

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2004-11-29 23:11 -------
Subject: Bug 18479

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	pinskia@gcc.gnu.org	2004-11-29 23:11:30

Modified files:
	gcc            : ChangeLog c-common.c 
	gcc/testsuite  : ChangeLog 
Added files:
	gcc/testsuite/gcc.dg: pr18479.c 

Log message:
	2004-11-29  Andrew Pinski  <pinskia@physics.uc.edu>
	
	PR c/18479
	* gcc.dg/pr18479.c: New test.
	
	2004-11-29  Andrew Pinski  <pinskia@physics.uc.edu>
	
	PR c/18479
	* c-common.c (handle_visibility_attribute): When the type decl
	is really a identifier node, warn about being ignored and return.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.6631&r2=2.6632
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/c-common.c.diff?cvsroot=gcc&r1=1.588&r2=1.589
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.4685&r2=1.4686
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.dg/pr18479.c.diff?cvsroot=gcc&r1=NONE&r2=1.1



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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18479

[Bug c/18479] [4.0 Regression] __attribute__ ((visibility("default"))) in C causes internal compiler error

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-11-29 23:11 -------
Fixed.

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18479