[Bug c++/17121] New: Link problem with function-local classes

[Bug c++/17121] New: Link problem with function-local classes

[Richard dot Kreckel at Framatome-ANP dot com]

$ g++ -v
Reading specs from
/data/scratch/devtools/gcc-3.5.0-pre-20040815/lib/gcc/i686-pc-linux-gnu/3.5.0/specs
Configured with: ../gcc-3.5-20040815/configure
--prefix=/data/scratch/devtools/gcc-3.5.0-pre-20040815 --enable-languages=c,c++
--with-as=/data/scratch/binutils/2.15/bin/as
--with-ld=/data/scratch/binutils/2.15/bin/ld --enable-__cxa_atexit --disable-nls
i686-pc-linux-gnu
Thread model: posix
gcc version 3.5.0 20040815 (experimental)
$ cat test.cc
struct A {
    virtual ~A() {}
};

void tsk_tsk()
{
    struct B : public A {};
}
$ cat main.cc
int main() {}
$ g++ -W -Wall -c test.cc
$ g++ -W -Wall main.cc test.o
test.o(.text+0x19): In function `tsk_tsk()':
: undefined reference to `vtable for tsk_tsk()::B'
test.o(.text+0x1d): In function `tsk_tsk()':
: undefined reference to `tsk_tsk()::B::~B()'
test.o(.text+0x23): In function `tsk_tsk()':
: undefined reference to `vtable for tsk_tsk()::B'
test.o(.text+0x27): In function `tsk_tsk()':
: undefined reference to `tsk_tsk()::B::~B()'
collect2: ld returned 1 exit status

As far as I can tell, this used to work with all releases of GCC.

-- 
           Summary: Link problem with function-local classes
           Product: gcc
           Version: 3.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: Richard dot Kreckel at Framatome-ANP dot com
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17121

[Bug c++/17121] [3.5 regression] Link problem with function-local classes

[bangerth at dealii dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to fail|                            |3.5.0
      Known to work|                            |3.4.1
            Summary|Link problem with function- |[3.5 regression] Link
                   |local classes               |problem with function-local
                   |                            |classes
   Target Milestone|---                         |3.5.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17121

[Bug c++/17121] [3.5 regression] Link problem with function-local classes

[bangerth at dealii dot org]

------- Additional Comments From bangerth at dealii dot org  2004-08-20 15:17 -------
Confirmed. A mainline regression. 
 
W. 

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2004-08-20 15:17:05
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17121

[Bug c++/17121] [3.5 regression] Link problem with function-local classes

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-08-20 15:34 -------
Patch here: <http://gcc.gnu.org/ml/gcc-patches/2004-08/msg01569.html> being testing right now.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |patch, wrong-code


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17121

[Bug c++/17121] [3.5 regression] Link problem with function-local classes

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-08-20 15:35 -------
Ignore that comment, that was a different bug.

But I think this was caused by Mark's change for linkage (aka the always act as unit-at-a-time for C++).

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mmitchel at gcc dot gnu dot
                   |                            |org
           Keywords|patch                       |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17121

[Bug c++/17121] [3.5 regression] Link problem with function-local classes

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2004-08-21 01:31 -------
Subject: Bug 17121

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	mmitchel@gcc.gnu.org	2004-08-21 01:31:27

Modified files:
	gcc/cp         : ChangeLog decl.c 
	gcc/testsuite  : ChangeLog 
Added files:
	gcc/testsuite/g++.dg/inherit: local1.C 

Log message:
	PR c++/17121
	* decl.c (expand_static_init): Use DECL_FUNCTION_SCOPE_P.
	
	PR c++/17121
	* g++.dg/inherit/local2.C: New test.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/ChangeLog.diff?cvsroot=gcc&r1=1.4292&r2=1.4293
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/decl.c.diff?cvsroot=gcc&r1=1.1275&r2=1.1276
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.4169&r2=1.4170
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/inherit/local1.C.diff?cvsroot=gcc&r1=NONE&r2=1.1



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17121

[Bug c++/17121] [3.5 regression] Link problem with function-local classes

[mmitchel at gcc dot gnu dot org]

------- Additional Comments From mmitchel at gcc dot gnu dot org  2004-08-21 01:32 -------
Fixed in GCC 3.5.0.

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=17121