[Bug ipa/61921] New: [4.10 Regression] ICE: SIGSEGV in varpool_node::get_constructor(), at varpool.c:275 with -O2 -fipa-pta

[Bug ipa/61921] New: [4.10 Regression] ICE: SIGSEGV in varpool_node::get_constructor(), at varpool.c:275 with -O2 -fipa-pta

[zsojka at seznam dot cz]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61921

            Bug ID: 61921
           Summary: [4.10 Regression] ICE: SIGSEGV in
                    varpool_node::get_constructor(), at varpool.c:275 with
                    -O2 -fipa-pta
           Product: gcc
           Version: 4.10.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: ipa
          Assignee: unassigned at gcc dot gnu.org
          Reporter: zsojka at seznam dot cz

Created attachment 33189
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=33189&action=edit
reduced testcase

Compiler output (under valgrind):
$ gcc -O2 -fipa-pta testcase.C
==11993== Invalid read of size 8
==11993==    at 0xFA105D: varpool_node::get_constructor() (varpool.c:275)
==11993==    by 0xE9FFAA: create_variable_info_for_1(tree_node*, char const*)
(tree-ssa-structalias.c:5674)
==11993==    by 0xEA2D92: intra_create_variable_infos(function*) [clone
.isra.123] (tree-ssa-structalias.c:5888)
==11993==    by 0xEABF2D: (anonymous
namespace)::pass_ipa_pta::execute(function*) (tree-ssa-structalias.c:7190)
==11993==    by 0xC190AC: execute_one_pass(opt_pass*) (passes.c:2149)
==11993==    by 0xC19CBA: execute_ipa_pass_list(opt_pass*) (passes.c:2539)
==11993==    by 0x947386: compile() (cgraphunit.c:2219)
==11993==    by 0x9480A4: finalize_compilation_unit() (cgraphunit.c:2338)
==11993==    by 0x72441C: cp_write_global_declarations() (decl2.c:4684)
==11993==    by 0xD1314C: compile_file() (toplev.c:562)
==11993==    by 0xD15484: toplev_main(int, char**) (toplev.c:1938)
==11993==    by 0x5A46BF4: (below main) (in /lib64/libc-2.17.so)
==11993==  Address 0x8 is not stack'd, malloc'd or (recently) free'd
==11993== 
testcase.C:21:1: internal compiler error: Segmentation fault
 }
 ^
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

Tested revisions:
r213075 - ICE
r213035 - ICE
r212969 - OK
4_9 r212703 - OK

[Bug ipa/61921] [4.10 Regression] ICE: SIGSEGV in varpool_node::get_constructor(), at varpool.c:275 with -O2 -fipa-pta

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61921

Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |Joost.VandeVondele at mat dot ethz
                   |                            |.ch

--- Comment #1 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
*** Bug 61932 has been marked as a duplicate of this bug. ***

[Bug ipa/61921] [4.10 Regression] ICE: SIGSEGV in varpool_node::get_constructor(), at varpool.c:275 with -O2 -fipa-pta

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61921

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.10.0

[Bug ipa/61921] [4.10 Regression] ICE: SIGSEGV in varpool_node::get_constructor(), at varpool.c:275 with -O2 -fipa-pta

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61921

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
   Last reconfirmed|                            |2014-07-28
           Assignee|unassigned at gcc dot gnu.org      |rguenth at gcc dot gnu.org
     Ever confirmed|0                           |1

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Mine.

[Bug ipa/61921] [4.10 Regression] ICE: SIGSEGV in varpool_node::get_constructor(), at varpool.c:275 with -O2 -fipa-pta

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61921

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

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

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Fixed.

[Bug ipa/61921] [4.10 Regression] ICE: SIGSEGV in varpool_node::get_constructor(), at varpool.c:275 with -O2 -fipa-pta

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61921

--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Author: rguenth
Date: Mon Jul 28 08:25:34 2014
New Revision: 213114

URL: https://gcc.gnu.org/viewcvs?rev=213114&root=gcc&view=rev
Log:
2014-07-28  Richard Biener  <rguenther@suse.de>

    PR tree-optimization/61921
    * tree-ssa-structalias.c (create_variable_info_for_1): Check
    if there is a varpool node before dereferencing it.

    * gfortran.dg/pr61921.f90: New testcase.

Added:
    trunk/gcc/testsuite/gfortran.dg/pr61921.f90
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-structalias.c