[Bug c++/41754] New: initializer list internal compiler segfault

[Bug c++/41754] New: initializer list internal compiler segfault

[tom dot deseyn at gmail dot com]

This program generates an internal compiler error: Segmentation fault.

#include <map>
#include <string>
#include <iostream>

using namespace std;

int main()
{
        map<string, string> m;
        m.insert({{"t", "t"}, {"y", "y"}});

        return 0;
}

$ g++ -std=c++0x test.cpp
test.cpp: In function 'int main()':
test.cpp:11: 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.

This happens on a compiler built on cygwin from:
svn://gcc.gnu.org/svn/gcc/tags/gcc_4_4_2_release
and
svn://gcc.gnu.org/svn/gcc/branches/gcc-4_4-branch@152637
with ./configure --prefix=... --disable-sjlj-exceptions

Tom@crius ~/tmp
$ /opt/gcc4.4.2/bin/gcc -v
Using built-in specs.
Target: i686-pc-cygwin
Configured with: /home/Tom/svn/gcc4.4.2/configure --prefix=/opt/gcc4.4.2
--disab
le-sjlj-exceptions
Thread model: single
gcc version 4.4.2 (GCC)

$ /opt/gcc4.4/bin/gcc -v
Using built-in specs.
Target: i686-pc-cygwin
Configured with: /home/Tom/svn/gcc/configure --prefix=/opt/gcc4.4
--disable-sjlj
-exceptions
Thread model: single
gcc version 4.4.2 20091011 (prerelease) (GCC)


-- 
           Summary: initializer list internal compiler segfault
           Product: gcc
           Version: 4.4.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: tom dot deseyn at gmail dot com
 GCC build triplet: i686-pc-cygwin
  GCC host triplet: i686-pc-cygwin
GCC target triplet: i686-pc-cygwin


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41754

[Bug c++/41754] initializer list internal compiler segfault

[jason at gcc dot gnu dot org]

------- Comment #1 from jason at gcc dot gnu dot org  2009-10-31 21:12 -------
Confirmed with current 4.4 branch.  4.5 doesn't segfault for some reason, but
we run into the same invalid code.


-- 

jason at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |jason at gcc dot gnu dot org
                   |dot org                     |
             Status|UNCONFIRMED                 |ASSIGNED
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2009-10-31 21:12:37
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41754

[Bug c++/41754] initializer list internal compiler segfault

[jason at gcc dot gnu dot org]

------- Comment #2 from jason at gcc dot gnu dot org  2009-11-01 05:06 -------
Subject: Bug 41754

Author: jason
Date: Sun Nov  1 05:06:42 2009
New Revision: 153788

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=153788
Log:
        PR c++/41754
        * call.c (compare_ics): Avoid bad union use when
        comparing two ck_lists.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/initlist25.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/call.c
    trunk/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41754

[Bug c++/41754] initializer list internal compiler segfault

[jason at gcc dot gnu dot org]

------- Comment #3 from jason at gcc dot gnu dot org  2009-11-01 05:27 -------
Subject: Bug 41754

Author: jason
Date: Sun Nov  1 05:27:04 2009
New Revision: 153791

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=153791
Log:
        PR c++/41754
        * call.c (compare_ics): Avoid bad union use when
        comparing two ck_lists.

Added:
    branches/gcc-4_4-branch/gcc/testsuite/g++.dg/cpp0x/initlist25.C
      - copied unchanged from r153788,
trunk/gcc/testsuite/g++.dg/cpp0x/initlist25.C
Modified:
    branches/gcc-4_4-branch/gcc/cp/ChangeLog
    branches/gcc-4_4-branch/gcc/cp/call.c
    branches/gcc-4_4-branch/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41754

[Bug c++/41754] initializer list internal compiler segfault

[jason at gcc dot gnu dot org]

------- Comment #4 from jason at gcc dot gnu dot org  2009-11-01 19:03 -------
Fixed.


-- 

jason at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.4.3


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41754

[Bug c++/41754] initializer list internal compiler segfault

[tom dot deseyn at gmail dot com]

------- Comment #5 from tom dot deseyn at gmail dot com  2009-11-01 20:51 -------
Thanks


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=41754