[Bug other/47276] New: ICE in function_and_variable_visibility, at ipa.c:857 during compiling glibc.

[Bug other/47276] New: ICE in function_and_variable_visibility, at ipa.c:857 during compiling glibc.

[pluto at agmk dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47276

           Summary: ICE in function_and_variable_visibility, at ipa.c:857
                    during compiling glibc.
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: other
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: pluto@agmk.net


/local/devel/toolchain46/x86_64-gnu-linux.host64/bin/x86_64-gnu-linux-gcc \
-c  syslog.i -std=gnu99 -fgnu89-inline -O2 -fmerge-all-constants
-fno-strict-aliasing \
-fwrapv -pipe -fPIC -fexceptions -o /dev/null


../sysdeps/unix/sysv/linux/syslog.c:10:0: internal compiler error: in
function_and_variable_visibility, at ipa.c:857


afaics there's no weakref like in PR47190 and PR47193.

[Bug tree-optimization/47276] [4.6 Regression] ICE in function_and_variable_visibility, at ipa.c:857 during compiling glibc.

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47276

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |WAITING
   Last reconfirmed|                            |2011.01.13 10:55:50
          Component|other                       |tree-optimization
   Target Milestone|---                         |4.6.0
            Summary|ICE in                      |[4.6 Regression] ICE in
                   |function_and_variable_visib |function_and_variable_visib
                   |ility, at ipa.c:857 during  |ility, at ipa.c:857 during
                   |compiling glibc.            |compiling glibc.
     Ever Confirmed|0                           |1

--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-01-13 10:55:50 UTC ---
Please attach preprocessed source.

[Bug tree-optimization/47276] [4.6 Regression] ICE in function_and_variable_visibility, at ipa.c:857 during compiling glibc.

[pluto at agmk dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47276

--- Comment #2 from Pawel Sikora <pluto at agmk dot net> 2011-01-13 11:44:10 UTC ---
Created attachment 22958
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=22958
testcase.

[Bug tree-optimization/47276] [4.6 Regression] ICE in function_and_variable_visibility, at ipa.c:857 during compiling glibc.

[pluto at agmk dot net]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47276

--- Comment #3 from Pawel Sikora <pluto at agmk dot net> 2011-01-13 12:49:29 UTC ---
git bisect identified this commit.

[87ac7f211c08dba84adbd23b1013ef20aa3627f0] PR tree-optmization/46469

[Bug tree-optimization/47276] [4.6 Regression] ICE in function_and_variable_visibility, at ipa.c:857 during compiling glibc.

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47276

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|WAITING                     |NEW

[Bug tree-optimization/47276] [4.6 Regression] ICE in function_and_variable_visibility, at ipa.c:857 during compiling glibc.

[hubicka at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47276

--- Comment #4 from Jan Hubicka <hubicka at gcc dot gnu.org> 2011-01-13 17:16:00 UTC ---
I am testing the following patch.  We are overactive on checking aliases of
aliases
Index: ipa.c
===================================================================
--- ipa.c       (revision 168753)
+++ ipa.c       (working copy)
@@ -847,6 +847,8 @@ function_and_variable_visibility (bool w
       if ((node = cgraph_node_for_asm (p->target)) != NULL
          && !DECL_EXTERNAL (node->decl))
         {
+         if (!node->analyzed)
+           continue;
          /* Weakrefs alias symbols from other compilation unit.  In the case
             the destination of weakref became available because of LTO, we
must
             mark it as needed.  */

[Bug tree-optimization/47276] [4.6 Regression] ICE in function_and_variable_visibility, at ipa.c:857 during compiling glibc.

[hubicka at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47276

--- Comment #5 from Jan Hubicka <hubicka at gcc dot gnu.org> 2011-01-15 15:45:00 UTC ---
Author: hubicka
Date: Sat Jan 15 15:44:56 2011
New Revision: 168844

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=168844
Log:
    PR tree-optimization/47276 
    * ipa.c (function_and_variable_visibility): Do not try to mark alias
    declarations as needed.
    * gcc.dg/pr47276.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.dg/pr47276.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/ipa.c
    trunk/gcc/testsuite/ChangeLog

[Bug tree-optimization/47276] [4.6 Regression] ICE in function_and_variable_visibility, at ipa.c:857 during compiling glibc.

[hubicka at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47276

Jan Hubicka <hubicka at gcc dot gnu.org> changed:

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

--- Comment #6 from Jan Hubicka <hubicka at gcc dot gnu.org> 2011-01-15 15:50:24 UTC ---
Fixed.