[Bug c++/45008] New: Template code not expanded properly

[Bug c++/45008] New: Template code not expanded properly

[martin dot gieseking at uos dot de]

When compiling the attached sources with gcc 4.5.0 on Linux x86_64, I get an
executable that unexpectedly leads to a segfault. It seems, gcc doesn't handle
sub-classes defined and instantiated in a template's method properly.

I've attached a tarball containing the 3 files f1.ii, f2.ii, and main.ii.

Here's the compiler output:

$ g++ -v -save-temps f1.cpp f2.cpp main.cpp
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/lib64/gcc/x86_64-suse-linux/4.5/lto-wrapper
Target: x86_64-suse-linux
Configured with: ../configure --prefix=/usr --infodir=/usr/share/info
--mandir=/usr/share/man --libdir=/usr/lib64 --libexecdir=/usr/lib64
--enable-languages=c,c++,objc,fortran,obj-c++,java,ada
--enable-checking=release --with-gxx-include-dir=/usr/include/c++/4.5
--enable-ssp --disable-libssp --disable-plugin
--with-bugurl=http://bugs.opensuse.org/ --with-pkgversion='SUSE Linux'
--disable-libgcj --disable-libmudflap --with-slibdir=/lib64 --with-system-zlib
--enable-__cxa_atexit --enable-libstdcxx-allocator=new --disable-libstdcxx-pch
--enable-version-specific-runtime-libs --program-suffix=-4.5
--enable-linux-futex --without-system-libunwind --enable-gold
--with-plugin-ld=/usr/bin/gold --with-arch-32=i586 --with-tune=generic
--build=x86_64-suse-linux
Thread model: posix
gcc version 4.5.0 20100604 [gcc-4_5-branch revision 160292] (SUSE Linux) 
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-shared-libgcc' '-mtune=generic'
'-march=x86-64'
 /usr/lib64/gcc/x86_64-suse-linux/4.5/cc1plus -E -quiet -v -D_GNU_SOURCE f1.cpp
-mtune=generic -march=x86-64 -fpch-preprocess -o f1.ii
#include "..." search starts here:
#include <...> search starts here:
 /usr/include/c++/4.5
 /usr/include/c++/4.5/x86_64-suse-linux
 /usr/include/c++/4.5/backward
 /usr/local/include
 /usr/lib64/gcc/x86_64-suse-linux/4.5/include
 /usr/lib64/gcc/x86_64-suse-linux/4.5/include-fixed
 /usr/lib64/gcc/x86_64-suse-linux/4.5/../../../../x86_64-suse-linux/include
 /usr/include
End of search list.
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-shared-libgcc' '-mtune=generic'
'-march=x86-64'
 /usr/lib64/gcc/x86_64-suse-linux/4.5/cc1plus -fpreprocessed f1.ii -quiet
-dumpbase f1.cpp -mtune=generic -march=x86-64 -auxbase f1 -version -o f1.s
GNU C++ (SUSE Linux) version 4.5.0 20100604 [gcc-4_5-branch revision 160292]
(x86_64-suse-linux)
        compiled by GNU C version 4.5.0 20100604 [gcc-4_5-branch revision
160292], GMP version 4.3.2, MPFR version 2.4.2, MPC version 0.8.1
GGC heuristics: --param ggc-min-expand=98 --param ggc-min-heapsize=127782
GNU C++ (SUSE Linux) version 4.5.0 20100604 [gcc-4_5-branch revision 160292]
(x86_64-suse-linux)
        compiled by GNU C version 4.5.0 20100604 [gcc-4_5-branch revision
160292], GMP version 4.3.2, MPFR version 2.4.2, MPC version 0.8.1
GGC heuristics: --param ggc-min-expand=98 --param ggc-min-heapsize=127782
Compiler executable checksum: 5c8e9dc17442c61d1650fc721fc13e48
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-shared-libgcc' '-mtune=generic'
'-march=x86-64'
 /usr/lib64/gcc/x86_64-suse-linux/4.5/../../../../x86_64-suse-linux/bin/as -V
-Qy --64 -o f1.o f1.s
GNU assembler version 2.20.0 (x86_64-suse-linux) using BFD version (GNU
Binutils; openSUSE 11.3) 2.20.0.20100122-6
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-shared-libgcc' '-mtune=generic'
'-march=x86-64'
 /usr/lib64/gcc/x86_64-suse-linux/4.5/cc1plus -E -quiet -v -D_GNU_SOURCE f2.cpp
-mtune=generic -march=x86-64 -fpch-preprocess -o f2.ii
#include "..." search starts here:
#include <...> search starts here:
 /usr/include/c++/4.5
 /usr/include/c++/4.5/x86_64-suse-linux
 /usr/include/c++/4.5/backward
 /usr/local/include
 /usr/lib64/gcc/x86_64-suse-linux/4.5/include
 /usr/lib64/gcc/x86_64-suse-linux/4.5/include-fixed
 /usr/lib64/gcc/x86_64-suse-linux/4.5/../../../../x86_64-suse-linux/include
 /usr/include
End of search list.
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-shared-libgcc' '-mtune=generic'
'-march=x86-64'
 /usr/lib64/gcc/x86_64-suse-linux/4.5/cc1plus -fpreprocessed f2.ii -quiet
-dumpbase f2.cpp -mtune=generic -march=x86-64 -auxbase f2 -version -o f2.s
GNU C++ (SUSE Linux) version 4.5.0 20100604 [gcc-4_5-branch revision 160292]
(x86_64-suse-linux)
        compiled by GNU C version 4.5.0 20100604 [gcc-4_5-branch revision
160292], GMP version 4.3.2, MPFR version 2.4.2, MPC version 0.8.1
GGC heuristics: --param ggc-min-expand=98 --param ggc-min-heapsize=127782
GNU C++ (SUSE Linux) version 4.5.0 20100604 [gcc-4_5-branch revision 160292]
(x86_64-suse-linux)
        compiled by GNU C version 4.5.0 20100604 [gcc-4_5-branch revision
160292], GMP version 4.3.2, MPFR version 2.4.2, MPC version 0.8.1
GGC heuristics: --param ggc-min-expand=98 --param ggc-min-heapsize=127782
Compiler executable checksum: 5c8e9dc17442c61d1650fc721fc13e48
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-shared-libgcc' '-mtune=generic'
'-march=x86-64'
 /usr/lib64/gcc/x86_64-suse-linux/4.5/../../../../x86_64-suse-linux/bin/as -V
-Qy --64 -o f2.o f2.s
GNU assembler version 2.20.0 (x86_64-suse-linux) using BFD version (GNU
Binutils; openSUSE 11.3) 2.20.0.20100122-6
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-shared-libgcc' '-mtune=generic'
'-march=x86-64'
 /usr/lib64/gcc/x86_64-suse-linux/4.5/cc1plus -E -quiet -v -D_GNU_SOURCE
main.cpp -mtune=generic -march=x86-64 -fpch-preprocess -o main.ii
#include "..." search starts here:
#include <...> search starts here:
 /usr/include/c++/4.5
 /usr/include/c++/4.5/x86_64-suse-linux
 /usr/include/c++/4.5/backward
 /usr/local/include
 /usr/lib64/gcc/x86_64-suse-linux/4.5/include
 /usr/lib64/gcc/x86_64-suse-linux/4.5/include-fixed
 /usr/lib64/gcc/x86_64-suse-linux/4.5/../../../../x86_64-suse-linux/include
 /usr/include
End of search list.
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-shared-libgcc' '-mtune=generic'
'-march=x86-64'
 /usr/lib64/gcc/x86_64-suse-linux/4.5/cc1plus -fpreprocessed main.ii -quiet
-dumpbase main.cpp -mtune=generic -march=x86-64 -auxbase main -version -o
main.s
GNU C++ (SUSE Linux) version 4.5.0 20100604 [gcc-4_5-branch revision 160292]
(x86_64-suse-linux)
        compiled by GNU C version 4.5.0 20100604 [gcc-4_5-branch revision
160292], GMP version 4.3.2, MPFR version 2.4.2, MPC version 0.8.1
GGC heuristics: --param ggc-min-expand=98 --param ggc-min-heapsize=127782
GNU C++ (SUSE Linux) version 4.5.0 20100604 [gcc-4_5-branch revision 160292]
(x86_64-suse-linux)
        compiled by GNU C version 4.5.0 20100604 [gcc-4_5-branch revision
160292], GMP version 4.3.2, MPFR version 2.4.2, MPC version 0.8.1
GGC heuristics: --param ggc-min-expand=98 --param ggc-min-heapsize=127782
Compiler executable checksum: 5c8e9dc17442c61d1650fc721fc13e48
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-shared-libgcc' '-mtune=generic'
'-march=x86-64'
 /usr/lib64/gcc/x86_64-suse-linux/4.5/../../../../x86_64-suse-linux/bin/as -V
-Qy --64 -o main.o main.s
GNU assembler version 2.20.0 (x86_64-suse-linux) using BFD version (GNU
Binutils; openSUSE 11.3) 2.20.0.20100122-6
COMPILER_PATH=/usr/lib64/gcc/x86_64-suse-linux/4.5/:/usr/lib64/gcc/x86_64-suse-linux/4.5/:/usr/lib64/gcc/x86_64-suse-linux/:/usr/lib64/gcc/x86_64-suse-linux/4.5/:/usr/lib64/gcc/x86_64-suse-linux/:/usr/lib64/gcc/x86_64-suse-linux/4.5/../../../../x86_64-suse-linux/bin/
LIBRARY_PATH=/usr/lib64/gcc/x86_64-suse-linux/4.5/:/usr/lib64/gcc/x86_64-suse-linux/4.5/../../../../lib64/:/lib/../lib64/:/usr/lib/../lib64/:/usr/lib64/gcc/x86_64-suse-linux/4.5/../../../../x86_64-suse-linux/lib/:/usr/lib64/gcc/x86_64-suse-linux/4.5/../../../:/lib/:/usr/lib/
COLLECT_GCC_OPTIONS='-v' '-save-temps' '-shared-libgcc' '-mtune=generic'
'-march=x86-64'
 /usr/lib64/gcc/x86_64-suse-linux/4.5/collect2 --build-id --eh-frame-hdr -m
elf_x86_64 -dynamic-linker /lib64/ld-linux-x86-64.so.2
/usr/lib64/gcc/x86_64-suse-linux/4.5/../../../../lib64/crt1.o
/usr/lib64/gcc/x86_64-suse-linux/4.5/../../../../lib64/crti.o
/usr/lib64/gcc/x86_64-suse-linux/4.5/crtbegin.o
-L/usr/lib64/gcc/x86_64-suse-linux/4.5
-L/usr/lib64/gcc/x86_64-suse-linux/4.5/../../../../lib64 -L/lib/../lib64
-L/usr/lib/../lib64
-L/usr/lib64/gcc/x86_64-suse-linux/4.5/../../../../x86_64-suse-linux/lib
-L/usr/lib64/gcc/x86_64-suse-linux/4.5/../../.. f1.o f2.o main.o -lstdc++ -lm
-lgcc_s -lgcc -lc -lgcc_s -lgcc /usr/lib64/gcc/x86_64-suse-linux/4.5/crtend.o
/usr/lib64/gcc/x86_64-suse-linux/4.5/../../../../lib64/crtn.o


-- 
           Summary: Template code not expanded properly
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: martin dot gieseking at uos dot de
 GCC build triplet: x86_64-suse-linux
  GCC host triplet: x86_64-suse-linux
GCC target triplet: x86_64-suse-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45008

[Bug c++/45008] Template code not expanded properly

[martin dot gieseking at uos dot de]

------- Comment #1 from martin dot gieseking at uos dot de  2010-07-20 18:37 -------
Created an attachment (id=21269)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21269&action=view)
sources to reproduce the issue


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45008

[Bug c++/45008] Template code not expanded properly

[paolo dot carlini at oracle dot com]

------- Comment #2 from paolo dot carlini at oracle dot com  2010-07-20 19:33 -------
I can reproduce the Segmentation fault with current 4_5-branch, not with
mainline.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45008

[Bug c++/45008] Template code not expanded properly

[nilssch at informatik dot uni-bremen dot de]

------- Comment #3 from nilssch at informatik dot uni-bremen dot de  2010-07-21 06:29 -------
Same here on debian.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45008

[Bug c++/45008] Template code not expanded properly

[allan at archlinux dot org]

------- Comment #4 from allan at archlinux dot org  2010-07-21 10:47 -------
Limiting the timeframe where this became fixed on mailine:
4.5.0 20100401 fails
4.6.0 20100416 works


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45008

[Bug c++/45008] [4.5 Regression] Template code not expanded properly

[paolo dot carlini at oracle dot com]

------- Comment #5 from paolo dot carlini at oracle dot com  2010-07-21 10:49 -------
Jason, can you have a look to this weird issue? To repeat, I can reproduce it
only in 4_5-branch, not in mainline nor in 4_4-branch (thus looks like a
regression) and of course doesn't happen if a single cpp file is used.


-- 

paolo dot carlini at oracle dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jason at gcc dot gnu dot org
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
           Keywords|                            |wrong-code
   Last reconfirmed|0000-00-00 00:00:00         |2010-07-21 10:49:37
               date|                            |
            Summary|Template code not expanded  |[4.5 Regression] Template
                   |properly                    |code not expanded properly


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45008

[Bug c++/45008] [4.5 Regression] Template code not expanded properly

[allan at archlinux dot org]

------- Comment #6 from allan at archlinux dot org  2010-07-22 03:53 -------
Applying this commit from PR43016 to gcc-4.5 fixes the issue:
http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=158095


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45008

[Bug c++/45008] [4.5 Regression] Template code not expanded properly

[rguenth at gcc dot gnu dot org]

-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.5.1


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45008

[Bug c++/45008] [4.5 Regression] Template code not expanded properly

[rguenth at gcc dot gnu dot org]

-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45008

[Bug c++/45008] [4.5 Regression] Template code not expanded properly

[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|2010-07-21 10:49:37         |2010-07-22 19:23:51
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45008

[Bug c++/45008] [4.5 Regression] Template code not expanded properly

[jason at gcc dot gnu dot org]

------- Comment #8 from jason at gcc dot gnu dot org  2010-07-23 13:51 -------
Fixed for 4.5.1.  Thanks for tracking down the patch that fixed it on the
trunk!


-- 

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=45008

[Bug c++/45008] [4.5 Regression] Template code not expanded properly

[jason at gcc dot gnu dot org]

------- Comment #7 from jason at gcc dot gnu dot org  2010-07-23 13:51 -------
Subject: Bug 45008

Author: jason
Date: Fri Jul 23 13:51:12 2010
New Revision: 162458

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=162458
Log:
        PR c++/43016
        PR c++/45008
        * decl.c (start_preparsed_function): Do defer nested functions.

Added:
    branches/gcc-4_5-branch/gcc/testsuite/g++.dg/abi/mangle44.C
Modified:
    branches/gcc-4_5-branch/gcc/cp/ChangeLog
    branches/gcc-4_5-branch/gcc/cp/decl.c
    branches/gcc-4_5-branch/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45008

[Bug c++/45008] [4.5 Regression] Template code not expanded properly

[jason at gcc dot gnu dot org]

------- Comment #9 from jason at gcc dot gnu dot org  2010-07-23 13:54 -------
Subject: Bug 45008

Author: jason
Date: Fri Jul 23 13:54:01 2010
New Revision: 162459

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=162459
Log:
        PR c++/45008
        * g++.dg/abi/mangle44.C: New.

Added:
    trunk/gcc/testsuite/g++.dg/abi/mangle44.C
Modified:
    trunk/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45008