[Bug c++/39742] New: ice in C++ overload resolution

[Bug c++/39742] New: ice in C++ overload resolution

[dcb314 at hotmail dot com]

I just tried to compile the following code

void f( int, ...);

struct S
{
};

void
g()
{
        void f( int, ...);

        S t;

        f( 1, t);
}

void
f( int i, ...)
{
}

with GNU C compiler version 4.5 snapshot 20090409
and the compiler said

jul17c.cc: In function 'void g()':
jul17c.cc:15: 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 C++ source code used to work with the 20090402 snapshot.

Here is valgrind helping out with a stack backtrace

Invalid read of size 8
==15025==    at 0x40791E: joust (call.c:6802)
==15025==    by 0x4080DA: tourney (call.c:6896)
==15025==    by 0x40BCF3: perform_overload_resolution (call.c:2979)
==15025==    by 0x416AE5: build_new_function_call (call.c:3019)
==15025==    by 0x50B4EF: finish_call_expr (semantics.c:1994)
==15025==    by 0x4BBEB3: cp_parser_postfix_expression (parser.c:4825)
==15025==    by 0x4BC7B3: cp_parser_unary_expression (parser.c:5577)
==15025==    by 0x4BD08C: cp_parser_binary_expression (parser.c:6233)
==15025==    by 0x4BD473: cp_parser_assignment_expression (parser.c:6421)
==15025==    by 0x4BD89F: cp_parser_expression (parser.c:6566)
==15025==    by 0x4BDC33: cp_parser_expression_statement (parser.c:7129)
==15025==    by 0x4B684A: cp_parser_statement (parser.c:7019)
==15025==  Address 0x10 is not stack'd, malloc'd or (recently) free'd


-- 
           Summary: ice in C++ overload resolution
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: dcb314 at hotmail dot com
  GCC host triplet: x86_64-suse-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39742

[Bug c++/39742] ice in C++ overload resolution

[hjl dot tools at gmail dot com]

------- Comment #1 from hjl dot tools at gmail dot com  2009-04-12 15:41 -------
This is caused by revision 145709:

http://gcc.gnu.org/ml/gcc-cvs/2009-04/msg00331.html


-- 

hjl dot tools at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jason at redhat dot com
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2009-04-12 15:41:12
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39742

[Bug c++/39742] [4.5 Regression] ice in C++ overload resolution

[jason at gcc dot gnu dot org]

-- 

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|NEW                         |ASSIGNED
   Last reconfirmed|2009-04-12 15:41:12         |2009-04-12 16:15:09
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39742

[Bug c++/39742] [4.5 Regression] ice in C++ overload resolution

[jason at gcc dot gnu dot org]

------- Comment #2 from jason at gcc dot gnu dot org  2009-04-13 04:05 -------
Subject: Bug 39742

Author: jason
Date: Mon Apr 13 04:04:58 2009
New Revision: 145994

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=145994
Log:
        PR c++/39742
        * call.c (joust): Don't crash on variadic fn.

Added:
    trunk/gcc/testsuite/g++.dg/overload/extern-C-2.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/call.c
    trunk/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39742

[Bug c++/39742] [4.5 Regression] ice in C++ overload resolution

[jason at gcc dot gnu dot org]

------- Comment #3 from jason at gcc dot gnu dot org  2009-04-13 04:20 -------
Subject: Bug 39742

Author: jason
Date: Mon Apr 13 04:20:32 2009
New Revision: 145995

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=145995
Log:
        PR c++/39742
        * call.c (joust): Don't crash on variadic fn.

Added:
    branches/gcc-4_4-branch/gcc/testsuite/g++.dg/overload/extern-C-2.C
      - copied unchanged from r145994,
trunk/gcc/testsuite/g++.dg/overload/extern-C-2.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=39742

[Bug c++/39742] [4.5 Regression] ice in C++ overload resolution

[jason at gcc dot gnu dot org]

------- Comment #4 from jason at gcc dot gnu dot org  2009-04-13 04:28 -------
Fixed.


-- 

jason at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39742