c++/5453: Compiled program crash - inheritance/template/friend class problem

[kgardas at iol dot cz]

>Number:         5453
>Category:       c++
>Synopsis:       Compiled program crash - inheritance/template/friend class problem
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Tue Jan 22 06:46:01 PST 2002
>Closed-Date:
>Last-Modified:
>Originator:     kgardas@iol.cz
>Release:        gcc version 3.1 20020121 (experimental)
>Organization:
>Environment:
Debian GNU/Linux 3.0 on x86 machine
>Description:

 I've compiled attached program with:

thinkpad:~/mujprog/c-cc/tests/gcc31/crash-out-types$ c++ -v -o crash2 crash2.cc 
Reading specs from /home/karel/usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.1/specs
Configured with: ./../gcc3.1/configure --prefix=/home/karel/usr/local --enable-shared --enable-threads --enable-languages=c++
Thread model: posix
gcc version 3.1 20020121 (experimental)
 /home/karel/usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.1/cc1plus -v -D__GNUC__=3 -D__GNUC_MINOR__=1 -D__GNUC_PATCHLEVEL__=0 -D__ELF__ -Dunix -Dlinux -D__ELF__ -D__unix__ -D__linux__ -D__unix -D__linux -Asystem=posix -D__NO_INLINE__ -D__STDC_HOSTED__=1 -D_GNU_SOURCE -Acpu=i386 -Amachine=i386 -Di386 -D__i386 -D__i386__ -D__tune_i686__ -D__tune_pentiumpro__ crash2.cc -D__GNUG__=3 -D__DEPRECATED -D__EXCEPTIONS -D__GXX_ABI_VERSION=100 -quiet -dumpbase crash2.cc -version -o /tmp/ccddBPcT.s
GNU CPP version 3.1 20020121 (experimental) (cpplib) (i386 Linux/ELF)
GNU C++ version 3.1 20020121 (experimental) (i686-pc-linux-gnu)
        compiled by GNU C version 3.1 20020121 (experimental).
ignoring nonexistent directory "/home/karel/usr/local/i686-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
 /home/karel/usr/local/include/g++-v3
 /home/karel/usr/local/include/g++-v3/i686-pc-linux-gnu
 /home/karel/usr/local/include/g++-v3/backward
 /usr/local/include
 /home/karel/usr/local/include
 /home/karel/usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.1/include
 /usr/include
End of search list.
 as -V -Qy -o /tmp/ccozjyyR.o /tmp/ccddBPcT.s
GNU assembler version 2.11.92.0.12.3 (i386-linux) using BFD version 2.11.92.0.12.3 20011121 Debian/GNU Linux
 /home/karel/usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.1/collect2 -m elf_i386 -dynamic-linker /lib/ld-linux.so.2 -o crash2 /usr/lib/crt1.o /usr/lib/crti.o /home/karel/usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.1/crtbegin.o -L/home/karel/usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.1 -L/home/karel/usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.1/../../.. /tmp/ccozjyyR.o -lstdc++ -lm -lgcc_s -lgcc -lc -lgcc_s -lgcc /home/karel/usr/local/lib/gcc-lib/i686-pc-linux-gnu/3.1/crtend.o /usr/lib/crtn.o


Then I started it and it crashed!


thinkpad:~/mujprog/c-cc/tests/gcc31/crash-out-types$ ./crash2 
RefCntObject::RefCntObject()
CORBA::Object::Object()
B::B()
B_impl::B_impl()
Segmentation fault
thinkpad:~/mujprog/c-cc/tests/gcc31/crash-out-types$ 


This code works well with my standard gcc 2.95.4 (Debian prerelease) - the output is below:


ReaRefCntObject::RefCntObject()
CORBA::Object::Object()
B::B()
B_impl::B_impl()
RefCntObject::RefCntObject()
CORBA::Object::Object()
A::A()
A_impl::A_impl()
RefCntObject::_deref() <- 1
RefCntObject::_deref() -> 0
A_impl::~A_impl()
A::~A()
CORBA::Object::~Object()
RefCntObject::~RefCntObject()
_refcnt(): 0
RefCntObject::_deref() <- 1
RefCntObject::_deref() -> 0
B_impl::~B_impl()
B::~B()
CORBA::Object::~Object()
RefCntObject::~RefCntObject()
_refcnt(): 0
thinkpad:~/mujprog/c-cc/tests/gcc31/crash-out-types$ 


Cheers,

Karel
>How-To-Repeat:

>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted:
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