[Bug c++/43911] New: [4.4.3/4.5.0 regression] g++ can't compile any even trivial c++ source: undefined reference to `_Unwind_GetIPInfo'

[Bug c++/43911] New: [4.4.3/4.5.0 regression] g++ can't compile any even trivial c++ source: undefined reference to `_Unwind_GetIPInfo'

[dougmencken at gmail dot com]

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The test code which fails to compile with g++ on both 4.4.3 and 4.5.0:

#include <iostream>

int main(void)
{
        std::cout << "Hello." << std::endl;
        return 0;
}

$ gcc test.c++
/usr/lib/gcc/powerpc-gnu-linux-uclibc/4.5.0/../../../libstdc++.so: undefined
reference to `_Unwind_GetIPInfo'
collect2: ld returned 1 exit status


---- 4.4.2 (last working version with good g++) ----
Target: powerpc-gnu-linux-uclibc
Configured with: ./configure --prefix=/usr --build=powerpc-gnu-linux-uclibc
--host=powerpc-gnu-linux-uclibc --target=powerpc-gnu-linux-uclibc --disable-nls
--with-system-zlib --disable-checking --disable-werror --disable-multilib
--disable-libssp --enable-languages=c,c++ --enable-shared
--enable-threads=posix --disable-__cxa_atexit
Thread model: posix

---- 4.4.3 (doesn't work) ----
Configured with: ./configure --prefix=/usr --sysconfdir=/etc
--mandir=/usr/share/man --build=powerpc-gnu-linux-uclibc
--host=powerpc-gnu-linux-uclibc --target=powerpc-gnu-linux-uclibc --disable-nls
--with-system-zlib --disable-checking --disable-werror --disable-multilib
--disable-libssp --enable-languages=c,c++ --enable-shared
--enable-threads=posix --disable-__cxa_atexit
Thread model: posix

---- 4.5.0 (doesn't work too) ----
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/powerpc-gnu-linux-uclibc/4.5.0/lto-wrapper
Target: powerpc-gnu-linux-uclibc
Configured with: ./configure --prefix=/usr --sysconfdir=/etc
--mandir=/usr/share/man --build=powerpc-gnu-linux-uclibc
--host=powerpc-gnu-linux-uclibc --target=powerpc-gnu-linux-uclibc
--with-system-zlib --enable-languages=c,c++,fortran --disable-nls
--disable-werror --disable-multilib --disable-libssp --enable-checking=assert
--enable-shared --enable-threads=posix --disable-__cxa_atexit
Thread model: posix

I also tried to bootstrap with "--disable-libunwind-exceptions" appended to
./configure params ­no success.


Here are problem binaries of 4.4.3 and 4.5.0:
http://ftp.osuosl.org/pub/manulix/binpkg/buggy/gcc-4.4.3-powerpc-gnu-linux-uclibc.b2.binpkg.tar.bz2
http://ftp.osuosl.org/pub/manulix/binpkg/buggy/gcc-4.5.0-powerpc-gnu-linux-uclibc.binpkg.tar.bz2
md5sums:
4b964382b69440491aaf982816d244c5 
gcc-4.4.3-powerpc-gnu-linux-uclibc.b2.binpkg.tar.bz2
3264685eb6a9e7cb1a87070a478ae0c4 
gcc-4.5.0-powerpc-gnu-linux-uclibc.binpkg.tar.bz2

They have been built with GMP 5.0.0 and MPFR 2.4.2-p3 (and MPC 0.8.1 for
4.5.0). If you don't have an access to real powerpc hardware, you can test them
in some emulator (like qemu), I think. Also to reproduce you can try to
bootstrap native gcc > 4.4.2 on some real/emulated powerpc host (*not* i386 nor
i486 nor i586 nor i586mmx nor i686 nor x86_64 etc.).


-- 
           Summary: [4.4.3/4.5.0 regression] g++ can't compile any even
                    trivial c++ source: undefined reference to
                    `_Unwind_GetIPInfo'
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: major
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: dougmencken at gmail dot com
 GCC build triplet: powerpc-gnu-linux-uclibc
  GCC host triplet: powerpc-gnu-linux-uclibc
GCC target triplet: powerpc-gnu-linux-uclibc


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43911

[Bug c++/43911] [4.4.3/4.5.0 regression] g++ can't compile any even trivial c++ source: undefined reference to `_Unwind_GetIPInfo'

[redi at gcc dot gnu dot org]

------- Comment #1 from redi at gcc dot gnu dot org  2010-04-27 17:15 -------
that symbol is defined in libgcc_s.so - is that file present in the same
directory as libstdc++.so?
If you add -v to the compilation command it will show you the directories gcc
searches, is libgcc_s.so in any of those directories?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43911

[Bug c++/43911] [4.4.3/4.5.0 regression] g++ can't compile any even trivial c++ source: undefined reference to `_Unwind_GetIPInfo'

[redi at gcc dot gnu dot org]

------- Comment #2 from redi at gcc dot gnu dot org  2010-04-27 17:16 -------
oh wait a second ... what happens if you compile with g++ not gcc?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43911

[Bug c++/43911] [4.4.3/4.5.0 regression] g++ can't compile any even trivial c++ source: undefined reference to `_Unwind_GetIPInfo'

[dougmencken at gmail dot com]

------- Comment #3 from dougmencken at gmail dot com  2010-04-27 17:18 -------
I do not compile c++ sources with gcc. Yes, I mistyped gcc instead of g++ in
the first message, sorry.

$ g++ test.c\+\+
/usr/lib/gcc/powerpc-gnu-linux-uclibc/4.5.0/../../../libstdc++.so: undefined
reference to `_Unwind_GetIPInfo'
collect2: ld returned 1 exit status
$ gcc test.c\+\+
/tmp/ccfXg3T4.o: In function `main':
test.c++:(.text+0x16): undefined reference to `std::cout'
test.c++:(.text+0x1a): undefined reference to `std::cout'
test.c++:(.text+0x24): undefined reference to `std::basic_ostream<char,
std::char_traits<char> >& std::operator<< <std::char_traits<char>
>(std::basic_ostream<char, std::char_traits<char> >&, char const*)'
test.c++:(.text+0x32): undefined reference to `std::basic_ostream<char,
std::char_traits<char> >& std::endl<char, std::char_traits<char>
>(std::basic_ostream<char, std::char_traits<char> >&)'
test.c++:(.text+0x36): undefined reference to `std::basic_ostream<char,
std::char_traits<char> >& std::endl<char, std::char_traits<char>
>(std::basic_ostream<char, std::char_traits<char> >&)'
test.c++:(.text+0x38): undefined reference to `std::basic_ostream<char,
std::char_traits<char> >::operator<<(std::basic_ostream<char,
std::char_traits<char> >& (*)(std::basic_ostream<char, std::char_traits<char>
>&))'
/tmp/ccfXg3T4.o: In function `__static_initialization_and_destruction_0(int,
int)':
test.c++:(.text+0xa0): undefined reference to `std::ios_base::Init::Init()'
test.c++:(.text+0xcc): undefined reference to `std::ios_base::Init::~Init()'
collect2: ld returned 1 exit status


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43911

[Bug c++/43911] [4.4.3/4.5.0 regression] g++ can't compile any even trivial c++ source: undefined reference to `_Unwind_GetIPInfo'

[dougmencken at gmail dot com]

------- Comment #4 from dougmencken at gmail dot com  2010-04-27 17:20 -------
$ g++ -v test.c\+\+

Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/powerpc-gnu-linux-uclibc/4.5.0/lto-wrapper
Target: powerpc-gnu-linux-uclibc
Configured with: ./configure --prefix=/usr --sysconfdir=/etc
--mandir=/usr/share/man --build=powerpc-gnu-linux-uclibc
--host=powerpc-gnu-linux-uclibc --target=powerpc-gnu-linux-uclibc
--with-system-zlib --enable-languages=c,c++,fortran --disable-nls
--disable-werror --disable-multilib --disable-libssp --enable-checking=assert
--enable-shared --enable-threads=posix --disable-__cxa_atexit
Thread model: posix
gcc version 4.5.0 (GCC) 
COLLECT_GCC_OPTIONS='-v' '-shared-libgcc'
 /usr/libexec/gcc/powerpc-gnu-linux-uclibc/4.5.0/cc1plus -quiet -v
-D_GNU_SOURCE -D__unix__ -D__gnu_linux__ -D__linux__ -Dunix -D__unix -Dlinux
-D__linux -Asystem=linux -Asystem=unix -Asystem=posix test.c++ -quiet -dumpbase
test.c++ -auxbase test -version -o /tmp/ccABZmgZ.s
GNU C++ (GCC) version 4.5.0 (powerpc-gnu-linux-uclibc)
        compiled by GNU C version 4.5.0, GMP version 5.0.0, MPFR version
2.4.2-p3, MPC version 0.8.1
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
ignoring nonexistent directory "/usr/local/include"
ignoring nonexistent directory
"/usr/lib/gcc/powerpc-gnu-linux-uclibc/4.5.0/../../../../powerpc-gnu-linux-uclibc/include"
#include "..." search starts here:
#include <...> search starts here:
 /usr/lib/gcc/powerpc-gnu-linux-uclibc/4.5.0/../../../../include/c++/4.5.0

/usr/lib/gcc/powerpc-gnu-linux-uclibc/4.5.0/../../../../include/c++/4.5.0/powerpc-gnu-linux-uclibc

/usr/lib/gcc/powerpc-gnu-linux-uclibc/4.5.0/../../../../include/c++/4.5.0/backward
 /usr/lib/gcc/powerpc-gnu-linux-uclibc/4.5.0/include
 /usr/lib/gcc/powerpc-gnu-linux-uclibc/4.5.0/include-fixed
 /usr/include
End of search list.
GNU C++ (GCC) version 4.5.0 (powerpc-gnu-linux-uclibc)
        compiled by GNU C version 4.5.0, GMP version 5.0.0, MPFR version
2.4.2-p3, MPC version 0.8.1
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: 9800195b3ab13a9307f06b4b9405431e
COLLECT_GCC_OPTIONS='-v' '-shared-libgcc'

/usr/lib/gcc/powerpc-gnu-linux-uclibc/4.5.0/../../../../powerpc-gnu-linux-uclibc/bin/as
-mppc -many -V -Qy -o /tmp/ccMsA7lx.o /tmp/ccABZmgZ.s
GNU assembler version 2.20.51 (powerpc-gnu-linux-uclibc) using BFD version (GNU
Binutils) 2.20.51.20100213
COMPILER_PATH=/usr/libexec/gcc/powerpc-gnu-linux-uclibc/4.5.0/:/usr/libexec/gcc/powerpc-gnu-linux-uclibc/4.5.0/:/usr/libexec/gcc/powerpc-gnu-linux-uclibc/:/usr/lib/gcc/powerpc-gnu-linux-uclibc/4.5.0/:/usr/lib/gcc/powerpc-gnu-linux-uclibc/:/usr/lib/gcc/powerpc-gnu-linux-uclibc/4.5.0/../../../../powerpc-gnu-linux-uclibc/bin/
LIBRARY_PATH=/usr/lib/gcc/powerpc-gnu-linux-uclibc/4.5.0/:/usr/lib/gcc/powerpc-gnu-linux-uclibc/4.5.0/../../../../powerpc-gnu-linux-uclibc/lib/:/usr/lib/gcc/powerpc-gnu-linux-uclibc/4.5.0/../../../:/lib/:/usr/lib/
COLLECT_GCC_OPTIONS='-v' '-shared-libgcc'
 /usr/libexec/gcc/powerpc-gnu-linux-uclibc/4.5.0/collect2 --eh-frame-hdr -V -Qy
-m elf32ppclinux -dynamic-linker /lib/ld-uClibc.so.0
/usr/lib/gcc/powerpc-gnu-linux-uclibc/4.5.0/../../../crt1.o
/usr/lib/gcc/powerpc-gnu-linux-uclibc/4.5.0/../../../crti.o
/usr/lib/gcc/powerpc-gnu-linux-uclibc/4.5.0/crtbegin.o
-L/usr/lib/gcc/powerpc-gnu-linux-uclibc/4.5.0
-L/usr/lib/gcc/powerpc-gnu-linux-uclibc/4.5.0/../../../../powerpc-gnu-linux-uclibc/lib
-L/usr/lib/gcc/powerpc-gnu-linux-uclibc/4.5.0/../../.. /tmp/ccMsA7lx.o -lstdc++
-lm -lgcc_s -lgcc -lc -lgcc_s -lgcc
/usr/lib/gcc/powerpc-gnu-linux-uclibc/4.5.0/crtend.o
/usr/lib/gcc/powerpc-gnu-linux-uclibc/4.5.0/../../../crtn.o
GNU ld (GNU Binutils) 2.20.51.20100213
  Supported emulations:
   elf32ppclinux
   elf32ppc
  
elf32ppcsim/usr/lib/gcc/powerpc-gnu-linux-uclibc/4.5.0/../../../libstdc++.so:
undefined reference to `_Unwind_GetIPInfo'
collect2: ld returned 1 exit status


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43911

[Bug c++/43911] [4.4.3/4.5.0 regression] g++ can't compile any even trivial c++ source: undefined reference to `_Unwind_GetIPInfo'

[dougmencken at gmail dot com]

------- Comment #5 from dougmencken at gmail dot com  2010-04-27 17:28 -------
$ find / -name libgcc_s.so
/usr/lib/libgcc_s.so
$ objdump -x /usr/lib/libgcc_s.so
objdump: /usr/lib/libgcc_s.so: File format not recognized


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43911

[Bug c++/43911] [4.4.3/4.5.0 regression] g++ can't compile any even trivial c++ source: undefined reference to `_Unwind_GetIPInfo'

[dougmencken at gmail dot com]

------- Comment #6 from dougmencken at gmail dot com  2010-04-27 19:15 -------
$ cat /usr/lib/libgcc_s.so
/* GNU ld script
   Use the shared library, but some functions are only in
   the static library.  */
GROUP ( libgcc_s.so.1 libgcc.a )

$ readelf -s /usr/lib/libgcc_s.so.1 | grep Unwind
     3: 00010a80   580 FUNC    GLOBAL DEFAULT    9 _Unwind_Find_FDE@@GCC_3.0
    11: 0000bd78     8 FUNC    GLOBAL DEFAULT    9 _Unwind_GetIP@@GCC_3.0
    19: 0000e84c   496 FUNC    GLOBAL DEFAULT    9
_Unwind_Resume_or_Rethrow@@GCC_3.3
    26: 0000bda4     8 FUNC    GLOBAL DEFAULT    9
_Unwind_GetRegionStart@@GCC_3.0
    27: 0000ea74   456 FUNC    GLOBAL DEFAULT    9 _Unwind_Backtrace@@GCC_3.3
    30: 0000bccc     8 FUNC    GLOBAL DEFAULT    9 _Unwind_GetCFA@@GCC_3.3
    68: 0000e654   504 FUNC    GLOBAL DEFAULT    9 _Unwind_Resume@@GCC_3.0
    69: 0000ea3c    56 FUNC    GLOBAL DEFAULT    9
_Unwind_DeleteException@@GCC_3.0
    89: 0000e1e0   648 FUNC    GLOBAL DEFAULT    9
_Unwind_RaiseException@@GCC_3.0
    94: 0000bd94     8 FUNC    GLOBAL DEFAULT    9 _Unwind_SetIP@@GCC_3.0
   116: 0000bdec     8 FUNC    GLOBAL DEFAULT    9
_Unwind_GetTextRelBase@@GCC_3.0
   118: 0000bdac    56 FUNC    GLOBAL DEFAULT    9
_Unwind_FindEnclosingFunc@@GCC_3.3
   119: 0000bd9c     8 FUNC    GLOBAL DEFAULT    9
_Unwind_GetLanguageSpecif@@GCC_3.0
   122: 0000e468   492 FUNC    GLOBAL DEFAULT    9
_Unwind_ForcedUnwind@@GCC_3.0
   126: 0000bcd8   160 FUNC    GLOBAL DEFAULT    9 _Unwind_SetGR@@GCC_3.0
   132: 0000bc44   136 FUNC    GLOBAL DEFAULT    9 _Unwind_GetGR@@GCC_3.0
   136: 0000bde4     8 FUNC    GLOBAL DEFAULT    9
_Unwind_GetDataRelBase@@GCC_3.0
   159: 0000b6a4     4 FUNC    LOCAL  DEFAULT    9 _Unwind_DebugHook
   169: 0000debc   276 FUNC    LOCAL  DEFAULT    9 _Unwind_ForcedUnwind_Phas
   170: 0000dfd0   244 FUNC    LOCAL  DEFAULT    9 _Unwind_RaiseException_Ph
   189: 000100e8  1308 FUNC    LOCAL  DEFAULT    9 _Unwind_IteratePhdrCallba
   212: 0000bd80    20 FUNC    LOCAL  DEFAULT    9 _Unwind_GetIPInfo
   242: 00010a80   580 FUNC    GLOBAL DEFAULT    9 _Unwind_Find_FDE
   250: 0000bd78     8 FUNC    GLOBAL DEFAULT    9 _Unwind_GetIP
   258: 0000e84c   496 FUNC    GLOBAL DEFAULT    9 _Unwind_Resume_or_Rethrow
   265: 0000bda4     8 FUNC    GLOBAL DEFAULT    9 _Unwind_GetRegionStart
   266: 0000ea74   456 FUNC    GLOBAL DEFAULT    9 _Unwind_Backtrace
   269: 0000bccc     8 FUNC    GLOBAL DEFAULT    9 _Unwind_GetCFA
   307: 0000e654   504 FUNC    GLOBAL DEFAULT    9 _Unwind_Resume
   308: 0000ea3c    56 FUNC    GLOBAL DEFAULT    9 _Unwind_DeleteException
   328: 0000e1e0   648 FUNC    GLOBAL DEFAULT    9 _Unwind_RaiseException
   333: 0000bd94     8 FUNC    GLOBAL DEFAULT    9 _Unwind_SetIP
   355: 0000bdec     8 FUNC    GLOBAL DEFAULT    9 _Unwind_GetTextRelBase
   357: 0000bdac    56 FUNC    GLOBAL DEFAULT    9 _Unwind_FindEnclosingFunc
   358: 0000bd9c     8 FUNC    GLOBAL DEFAULT    9 _Unwind_GetLanguageSpecif
   361: 0000e468   492 FUNC    GLOBAL DEFAULT    9 _Unwind_ForcedUnwind
   365: 0000bcd8   160 FUNC    GLOBAL DEFAULT    9 _Unwind_SetGR
   371: 0000bc44   136 FUNC    GLOBAL DEFAULT    9 _Unwind_GetGR
   375: 0000bde4     8 FUNC    GLOBAL DEFAULT    9 _Unwind_GetDataRelBase


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43911

[Bug c++/43911] [4.4.3/4.5.0 regression] g++ can't compile any even trivial c++ source: undefined reference to `_Unwind_GetIPInfo'

[pinskia at gcc dot gnu dot org]

------- Comment #7 from pinskia at gcc dot gnu dot org  2010-04-27 19:17 -------
Are you sure that the newly built libgcc_s.so.1 is being installed?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43911

[Bug c++/43911] [4.4.3/4.5.0 regression] g++ can't compile any even trivial c++ source: undefined reference to `_Unwind_GetIPInfo'

[dougmencken at gmail dot com]

------- Comment #8 from dougmencken at gmail dot com  2010-04-27 19:22 -------
Yes, I'm sure, I'm using http://manulix.wikidot.com/files:prepare-mx-chroot-sh
script with --fresh option, so I do always have a fresh chroot environment in 5
minutes for powerpc uclibc, and I can also easily switch between fresh chroots
by specifying BUILDFARM_DIR in that script.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43911

[Bug c++/43911] [4.4.3/4.5.0 regression] g++ can't compile any even trivial c++ source: undefined reference to `_Unwind_GetIPInfo'

[dougmencken at gmail dot com]

------- Comment #9 from dougmencken at gmail dot com  2010-04-27 20:35 -------
$ objcopy --globalize-symbol _Unwind_GetIPInfo /usr/lib/libgcc_s.so.1
/usr/lib/libgcc_s.so.2

$ readelf -s /usr/lib/libgcc_s.so.2 | grep _Unwind_GetIPInfo
240: 0000bd80    20 FUNC    GLOBAL DEFAULT    9 _Unwind_GetIPInfo

$ rm /usr/lib/libgcc_s.so.1 && mv /usr/lib/libgcc_s.so.2 /usr/lib/libgcc_s.so.1

$ g++ test.c\+\+
/usr/lib/gcc/powerpc-gnu-linux-uclibc/4.5.0/../../../libstdc++.so: undefined
reference to `_Unwind_GetIPInfo'
collect2: ld returned 1 exit status

$ mv /usr/lib/libgcc_s.so.1 /
$ g++ test.c\+\+
g++: can't load library 'libgcc_s.so.1'

$ readelf -s /libgcc_s.so.1 | grep _Unwind_GetIPInfo
readelf: can't load library 'libgcc_s.so.1'

$ cp /libgcc_s.so.1 /usr/lib/
$ readelf -s /libgcc_s.so.1 | grep _Unwind_GetIPInfo
   240: 0000bd80    20 FUNC    GLOBAL DEFAULT    9 _Unwind_GetIPInfo


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43911

[Bug c++/43911] [4.4.3/4.5.0 regression] g++ can't compile any even trivial c++ source: undefined reference to `_Unwind_GetIPInfo'

[dougmencken at gmail dot com]

------- Comment #10 from dougmencken at gmail dot com  2010-04-27 20:48 -------
And may I repeat, please? It's definitely not-x86[_64] bug. I don't know can it
be revealed with cross toolchain (because all of you do test gcc only and only
on x86[_64] as host).
So, if you don't have an access to real powerpc hardware, you can test it
in some emulator (like qemu). Also to reproduce you can try to
bootstrap native gcc > 4.4.2 on some real/emulated powerpc host (*not* i386 nor
i486 nor i586 nor i586mmx nor i686 nor x86_64 etc.).


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43911

[Bug c++/43911] [4.4/4.5 Regression] g++ can't compile any even trivial c++ source: undefined reference to `_Unwind_GetIPInfo'

[rguenth at gcc dot gnu dot org]

-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to fail|                            |4.4.3 4.5.0
            Summary|[4.4.3/4.5.0 regression] g++|[4.4/4.5 Regression] g++
                   |can't compile any even      |can't compile any even
                   |trivial c++ source:         |trivial c++ source:
                   |undefined reference to      |undefined reference to
                   |`_Unwind_GetIPInfo'         |`_Unwind_GetIPInfo'
   Target Milestone|---                         |4.4.4
            Version|unknown                     |4.4.3


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43911

[Bug c++/43911] [4.4/4.5 Regression] g++ can't compile any even trivial c++ source: undefined reference to `_Unwind_GetIPInfo'

[rguenth at gcc dot gnu dot org]

------- Comment #11 from rguenth at gcc dot gnu dot org  2010-04-28 09:23 -------
_Unwind_GetIPInfo is exported since 4.2.0, the symbol should be

> objdump -T /lib/libgcc_s.so.1 | grep GetIPI
00013f30 g    DF .text  00000016  GCC_4.2.0   _Unwind_GetIPInfo

what binutils version are you using (why does your libgcc not have
symbol versions?)


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43911

[Bug c++/43911] [4.4/4.5 Regression] g++ can't compile any even trivial c++ source: undefined reference to `_Unwind_GetIPInfo'

[dougmencken at gmail dot com]

------- Comment #12 from dougmencken at gmail dot com  2010-04-28 19:36 -------
$ objdump -T /usr/lib/libgcc_s.so.1 | grep GetIPI
# i.e. nothing
$ objdump -T /usr/lib/libgcc_s.so.1 | grep Unwind
00010a80 g    DF .text  00000244  GCC_3.0     _Unwind_Find_FDE
0000bd78 g    DF .text  00000008  GCC_3.0     _Unwind_GetIP
0000e84c g    DF .text  000001f0  GCC_3.3     _Unwind_Resume_or_Rethrow
0000bda4 g    DF .text  00000008  GCC_3.0     _Unwind_GetRegionStart
0000ea74 g    DF .text  000001c8  GCC_3.3     _Unwind_Backtrace
0000bccc g    DF .text  00000008  GCC_3.3     _Unwind_GetCFA
0000e654 g    DF .text  000001f8  GCC_3.0     _Unwind_Resume
0000ea3c g    DF .text  00000038  GCC_3.0     _Unwind_DeleteException
0000e1e0 g    DF .text  00000288  GCC_3.0     _Unwind_RaiseException
0000bd94 g    DF .text  00000008  GCC_3.0     _Unwind_SetIP
0000bdec g    DF .text  00000008  GCC_3.0     _Unwind_GetTextRelBase
0000bdac g    DF .text  00000038  GCC_3.3     _Unwind_FindEnclosingFunction
0000bd9c g    DF .text  00000008  GCC_3.0     _Unwind_GetLanguageSpecificData
0000e468 g    DF .text  000001ec  GCC_3.0     _Unwind_ForcedUnwind
0000bcd8 g    DF .text  000000a0  GCC_3.0     _Unwind_SetGR
0000bc44 g    DF .text  00000088  GCC_3.0     _Unwind_GetGR
0000bde4 g    DF .text  00000008  GCC_3.0     _Unwind_GetDataRelBase

Hmm... 3.x, but I bootstrapped it with 4.4.2.

$ objdump -v | head -2
GNU objdump (GNU Binutils) 2.20.51.20100213
Copyright 2010 Free Software Foundation, Inc.

$ objdump -T /home/build-farm/binpkg/working-gcc-4.4.2/usr/lib/libgcc_s.so.1 |
grep Unwind
00010ea8 g    DF .text  00000260  GCC_3.0     _Unwind_Find_FDE
0000bcb4 g    DF .text  00000014  GCC_4.2.0   _Unwind_GetIPInfo
0000bcac g    DF .text  00000008  GCC_3.0     _Unwind_GetIP
0000f144 g    DF .text  000001dc  GCC_3.3     _Unwind_Resume_or_Rethrow
0000bcd8 g    DF .text  00000008  GCC_3.0     _Unwind_GetRegionStart
0000e63c g    DF .text  000001c8  GCC_3.3     _Unwind_Backtrace
0000bc30 g    DF .text  00000008  GCC_3.3     _Unwind_GetCFA
0000ebd0 g    DF .text  000001e0  GCC_3.0     _Unwind_Resume
0000bcf0 g    DF .text  00000038  GCC_3.0     _Unwind_DeleteException
0000eed0 g    DF .text  00000274  GCC_3.0     _Unwind_RaiseException
0000bcc8 g    DF .text  00000008  GCC_3.0     _Unwind_SetIP
0000bce8 g    DF .text  00000008  GCC_3.0     _Unwind_GetTextRelBase
0000bf7c g    DF .text  00000038  GCC_3.3     _Unwind_FindEnclosingFunction
0000bcd0 g    DF .text  00000008  GCC_3.0     _Unwind_GetLanguageSpecificData
0000e918 g    DF .text  000001e4  GCC_3.0     _Unwind_ForcedUnwind
0000bc38 g    DF .text  00000074  GCC_3.0     _Unwind_SetGR
0000bbd4 g    DF .text  0000005c  GCC_3.0     _Unwind_GetGR
0000bce0 g    DF .text  00000008  GCC_3.0     _Unwind_GetDataRelBase

Hmm...


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43911

[Bug c++/43911] [4.4/4.5 Regression] g++ can't compile any even trivial c++ source: undefined reference to `_Unwind_GetIPInfo'

[dougmencken at gmail dot com]

------- Comment #13 from dougmencken at gmail dot com  2010-04-28 19:57 -------
Created an attachment (id=20510)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=20510&action=view)
./powerpc-gnu-linux-uclibc/libstdc++-v3/config.log


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43911

[Bug c++/43911] [4.4/4.5 Regression] g++ can't compile any even trivial c++ source: undefined reference to `_Unwind_GetIPInfo'

[redi at gcc dot gnu dot org]

------- Comment #14 from redi at gcc dot gnu dot org  2010-04-28 20:08 -------
(In reply to comment #4)
> $ g++ -v test.c\+\+
> 
> Using built-in specs.
> COLLECT_GCC=g++
> COLLECT_LTO_WRAPPER=/usr/libexec/gcc/powerpc-gnu-linux-uclibc/4.5.0/lto-wrapper
> Target: powerpc-gnu-linux-uclibc
> Configured with: ./configure --prefix=/usr --sysconfdir=/etc

does it make any difference if you don't build in the srcdir as recommended at
http://gcc.gnu.org/install/configure.html
?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43911

[Bug c++/43911] [4.4/4.5 Regression] g++ can't compile any even trivial c++ source: undefined reference to `_Unwind_GetIPInfo'

[dougmencken at gmail dot com]

------- Comment #15 from dougmencken at gmail dot com  2010-04-28 20:46 -------
(In reply to comment #14)

$ ../gcc-4.5.0.srcpkg/configure --prefix=/usr --sysconfdir=/etc
--mandir=/usr/share/man \
> --with-system-zlib --enable-languages=c,c++,fortran \
> --disable-nls --disable-werror --disable-multilib --disable-libssp \
> --enable-checking=assert --enable-shared --enable-threads=posix \
> --disable-__cxa_atexit
configure: error: cannot run /bin/sh ../gcc-4.5.0.srcpkg/config.sub

$ ls -l ../gcc-4.5.0.srcpkg/config.sub
-rwxr-xr-x    1 500      501          34850 Mar 23 14:26
../gcc-4.5.0.srcpkg/config.sub

$ ${HOME}/build-farm/gcc-4.5.0.srcpkg/configure --prefix=/usr --sysconfdir=/etc
--mandir=/usr/share/man \
> --with-system-zlib --enable-languages=c,c++,fortran \
> --disable-nls --disable-werror --disable-multilib --disable-libssp \
> --enable-checking=assert --enable-shared --enable-threads=posix \
> --disable-__cxa_atexit
configure: error: cannot run /bin/sh
/root/build-farm/gcc-4.5.0.srcpkg/config.sub

Can't configure this way. What's wrong?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43911

[Bug c++/43911] [4.4/4.5 Regression] g++ can't compile any even trivial c++ source: undefined reference to `_Unwind_GetIPInfo'

[rguenth at gcc dot gnu dot org]

------- Comment #16 from rguenth at gcc dot gnu dot org  2010-04-29 09:57 -------
(In reply to comment #12)
> $ objdump -T /usr/lib/libgcc_s.so.1 | grep GetIPI
> # i.e. nothing
> $ objdump -T /usr/lib/libgcc_s.so.1 | grep Unwind
> 00010a80 g    DF .text  00000244  GCC_3.0     _Unwind_Find_FDE
> 0000bd78 g    DF .text  00000008  GCC_3.0     _Unwind_GetIP
> 0000e84c g    DF .text  000001f0  GCC_3.3     _Unwind_Resume_or_Rethrow
> 0000bda4 g    DF .text  00000008  GCC_3.0     _Unwind_GetRegionStart
> 0000ea74 g    DF .text  000001c8  GCC_3.3     _Unwind_Backtrace
> 0000bccc g    DF .text  00000008  GCC_3.3     _Unwind_GetCFA
> 0000e654 g    DF .text  000001f8  GCC_3.0     _Unwind_Resume
> 0000ea3c g    DF .text  00000038  GCC_3.0     _Unwind_DeleteException
> 0000e1e0 g    DF .text  00000288  GCC_3.0     _Unwind_RaiseException
> 0000bd94 g    DF .text  00000008  GCC_3.0     _Unwind_SetIP
> 0000bdec g    DF .text  00000008  GCC_3.0     _Unwind_GetTextRelBase
> 0000bdac g    DF .text  00000038  GCC_3.3     _Unwind_FindEnclosingFunction
> 0000bd9c g    DF .text  00000008  GCC_3.0     _Unwind_GetLanguageSpecificData
> 0000e468 g    DF .text  000001ec  GCC_3.0     _Unwind_ForcedUnwind
> 0000bcd8 g    DF .text  000000a0  GCC_3.0     _Unwind_SetGR
> 0000bc44 g    DF .text  00000088  GCC_3.0     _Unwind_GetGR
> 0000bde4 g    DF .text  00000008  GCC_3.0     _Unwind_GetDataRelBase
> 
> Hmm... 3.x, but I bootstrapped it with 4.4.2.
> 
> $ objdump -v | head -2
> GNU objdump (GNU Binutils) 2.20.51.20100213
> Copyright 2010 Free Software Foundation, Inc.
> 
> $ objdump -T /home/build-farm/binpkg/working-gcc-4.4.2/usr/lib/libgcc_s.so.1 |
> grep Unwind
> 00010ea8 g    DF .text  00000260  GCC_3.0     _Unwind_Find_FDE
> 0000bcb4 g    DF .text  00000014  GCC_4.2.0   _Unwind_GetIPInfo
> 0000bcac g    DF .text  00000008  GCC_3.0     _Unwind_GetIP
> 0000f144 g    DF .text  000001dc  GCC_3.3     _Unwind_Resume_or_Rethrow
> 0000bcd8 g    DF .text  00000008  GCC_3.0     _Unwind_GetRegionStart
> 0000e63c g    DF .text  000001c8  GCC_3.3     _Unwind_Backtrace
> 0000bc30 g    DF .text  00000008  GCC_3.3     _Unwind_GetCFA
> 0000ebd0 g    DF .text  000001e0  GCC_3.0     _Unwind_Resume
> 0000bcf0 g    DF .text  00000038  GCC_3.0     _Unwind_DeleteException
> 0000eed0 g    DF .text  00000274  GCC_3.0     _Unwind_RaiseException
> 0000bcc8 g    DF .text  00000008  GCC_3.0     _Unwind_SetIP
> 0000bce8 g    DF .text  00000008  GCC_3.0     _Unwind_GetTextRelBase
> 0000bf7c g    DF .text  00000038  GCC_3.3     _Unwind_FindEnclosingFunction
> 0000bcd0 g    DF .text  00000008  GCC_3.0     _Unwind_GetLanguageSpecificData
> 0000e918 g    DF .text  000001e4  GCC_3.0     _Unwind_ForcedUnwind
> 0000bc38 g    DF .text  00000074  GCC_3.0     _Unwind_SetGR
> 0000bbd4 g    DF .text  0000005c  GCC_3.0     _Unwind_GetGR
> 0000bce0 g    DF .text  00000008  GCC_3.0     _Unwind_GetDataRelBase
> 
> Hmm...

This means you didn't install libgcc.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43911

[Bug c++/43911] [4.4/4.5 Regression] g++ can't compile any even trivial c++ source: undefined reference to `_Unwind_GetIPInfo'

[dougmencken at gmail dot com]

------- Comment #17 from dougmencken at gmail dot com  2010-04-29 20:40 -------
(In reply to comment #16)
> 
> This means you didn't install libgcc.
> 
So can you please tell me how to "install libgcc" then? I posted all options I
sent to ./configure for each 4.4.2, 4.4.3 and 4.5.0. I also posted links to
compiled GCC binaries (so you can check all that readelf/objdump by
yourselves).


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43911

[Bug c++/43911] [4.4/4.5 Regression] g++ can't compile any even trivial c++ source: undefined reference to `_Unwind_GetIPInfo'

[jakub at gcc dot gnu dot org]

-- 

jakub at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.4.4                       |4.4.5


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43911

[Bug c++/43911] [4.4/4.5 Regression] g++ can't compile any even trivial c++ source: undefined reference to `_Unwind_GetIPInfo'

[dougmencken at gmail dot com]

------- Comment #18 from dougmencken at gmail dot com  2010-05-02 13:30 -------
I can add that on glibc-based system (not uclibc one) 4.5.0 bootstraps
configured with "Configured with: ../gcc-4.5.0/configure --prefix=/usr
--sysconfdir=/etc --mandir=/usr/share/man --with-system-zlib
--enable-languages=c,c++,fortran --disable-nls --disable-werror
--disable-multilib --disable-libssp --enable-checking=assert --enable-shared
--enable-threads=posix --disable-__cxa_atexit" (out-of-source-tree build)
prefectly with working g++.
So it might be uclibc related.
Leaving bug open for now to find out more info on that.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43911

[Bug c++/43911] [4.4/4.5 Regression] g++ can't compile any even trivial c++ source: undefined reference to `_Unwind_GetIPInfo'

[dougmencken at gmail dot com]

------- Comment #19 from dougmencken at gmail dot com  2010-05-10 14:03 -------
It works on powerpc-uclibc host, but if bootstrapped the following way:
----
Configured with: ./configure --prefix=/usr --sysconfdir=/etc
--mandir=/usr/share/man --build=powerpc-gnu-linux-uclibc
--host=powerpc-gnu-linux-uclibc --target=powerpc-gnu-linux-uclibc
--with-system-zlib --enable-languages=c,c++,fortran --disable-nls
--disable-werror --disable-multilib --disable-libssp --disable-shared
--enable-threads=posix --disable-__cxa_atexit
Thread model: posix
gcc version 4.5.0 (GCC)
----
I just changed --enable-shared to --disable-shared and got working g++.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43911

[Bug c++/43911] [4.4/4.5 Regression] g++ can't compile any even trivial c++ source: undefined reference to `_Unwind_GetIPInfo'

[dougmencken at gmail dot com]

------- Comment #20 from dougmencken at gmail dot com  2010-05-10 16:23 -------
But how to rebuild binutils to remove libgcc_s.so.1 dependency from ld?

$ ./print-sharedlib-deps.sh /usr/bin/ld
/usr/bin/ld:
        libz.so.1
        libc.so.0
        libgcc_s.so.1

Now I'm using libgcc_s.so.1 copied from 4.4.2 (the last working one), and tried
to build binutils with --disable-shared too, but the above list (it is from
this build) does show that this lib is still required for ld to work (i.e. for
any non-static program to work). I can't imagine how long 4.4.2's libgcc_s.so.1
will remain binary compatible with any new GCC release.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43911

[Bug c++/43911] [4.4/4.5 Regression] g++ can't compile any even trivial c++ source: undefined reference to `_Unwind_GetIPInfo'

[pluto at agmk dot net]

------- Comment #21 from pluto at agmk dot net  2010-05-10 16:31 -------
(In reply to comment #20)
> But how to rebuild binutils to remove libgcc_s.so.1 dependency from ld?

configure binutils with --disable-shared --enable-static and build
with make AM_LDFLAGS="-all-static". you also need to have installed
static version of glibc.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43911

[Bug c++/43911] [4.4/4.5 Regression] g++ can't compile any even trivial c++ source: undefined reference to `_Unwind_GetIPInfo'

[redi at gcc dot gnu dot org]

------- Comment #22 from redi at gcc dot gnu dot org  2010-05-10 17:28 -------
(In reply to comment #17)
> So can you please tell me how to "install libgcc" then?

"make install" should do it.  if it's not, look to see if libgcc_s.so is built,
is it in the build tree? does the one in the build tree have the right symbols
with the right versions?

does "make install" even try to install it? the output should show.

there should be lots more things you can check to see why a working libgcc_s
isn't being installed


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43911

[Bug c++/43911] [4.4/4.5 Regression] g++ can't compile any even trivial c++ source: undefined reference to `_Unwind_GetIPInfo'

[dougmencken at gmail dot com]

------- Comment #23 from dougmencken at gmail dot com  2010-05-11 05:53 -------
(In reply to comment #22)

> "make install" should do it
make install of course does it (if --enable-shared is supplied to ./configure)

> look to see if libgcc_s.so is built, is it in the build tree?
I'm now on stage2:

$ cat stage_current stage_final 
stage2
stage3

and have the following inside bootstrap directory:

$ find . -name *libgcc_s*
./prev-gcc/libgcc_s.so.1
./prev-gcc/libgcc_s.so
./prev-powerpc-gnu-linux-uclibc/libgcc/libgcc_s.so.1
./prev-powerpc-gnu-linux-uclibc/libgcc/libgcc_s.so

I don't know, is it the same or not, but none of this does include
Unwind_GetIPInfo:

$ objdump -T ./prev-powerpc-gnu-linux-uclibc/libgcc/libgcc_s.so.1 | grep
Unwind_Get
0000bd78 g    DF .text  00000008  GCC_3.0     _Unwind_GetIP
0000bda4 g    DF .text  00000008  GCC_3.0     _Unwind_GetRegionStart
0000bccc g    DF .text  00000008  GCC_3.3     _Unwind_GetCFA
0000bdec g    DF .text  00000008  GCC_3.0     _Unwind_GetTextRelBase
0000bd9c g    DF .text  00000008  GCC_3.0     _Unwind_GetLanguageSpecificData
0000bc44 g    DF .text  00000088  GCC_3.0     _Unwind_GetGR
0000bde4 g    DF .text  00000008  GCC_3.0     _Unwind_GetDataRelBase
$ objdump -T ./prev-gcc/libgcc_s.so.1 | grep Unwind_Get
0000bd78 g    DF .text  00000008  GCC_3.0     _Unwind_GetIP
0000bda4 g    DF .text  00000008  GCC_3.0     _Unwind_GetRegionStart
0000bccc g    DF .text  00000008  GCC_3.3     _Unwind_GetCFA
0000bdec g    DF .text  00000008  GCC_3.0     _Unwind_GetTextRelBase
0000bd9c g    DF .text  00000008  GCC_3.0     _Unwind_GetLanguageSpecificData
0000bc44 g    DF .text  00000088  GCC_3.0     _Unwind_GetGR
0000bde4 g    DF .text  00000008  GCC_3.0     _Unwind_GetDataRelBase

So, it's stage1 or stage2 problem, not install problem.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43911

[Bug c++/43911] [4.4/4.5 Regression] g++ can't compile any even trivial c++ source: undefined reference to `_Unwind_GetIPInfo'

[mikpe at it dot uu dot se]

------- Comment #24 from mikpe at it dot uu dot se  2010-05-11 06:51 -------
Your gcc appears confused about whether to use the newer _Unwind_GetIPInfo() or
the older _Unwind_GetIP(). Most likely it's because you're building for uclibc
rather than glibc. I think you need to bisect between the last working gcc and
the first broken one to identify the responsible commit. Once that's done the
fix may be apparent.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43911

[Bug c++/43911] [4.4/4.5 Regression] g++ can't compile any even trivial c++ source: undefined reference to `_Unwind_GetIPInfo'

[dougmencken at gmail dot com]

------- Comment #25 from dougmencken at gmail dot com  2010-05-11 11:31 -------
(In reply to comment #24)
Okay, I'm ready to bisect. I know it would take weeks. I cloned gcc repo using
git clone git://git.infradead.org/toolchain/gcc.git gcc-git , but this repo
doesn't use tags (i.e. I can't specify that 4.4.2 is good and 4.4.3 is bad).
Can you please tell me which sha1 is for 4.4.2 and which one is for 4.4.3?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43911

[Bug c++/43911] [4.4/4.5 Regression] g++ can't compile any even trivial c++ source: undefined reference to `_Unwind_GetIPInfo'

[dougmencken at gmail dot com]

------- Comment #26 from dougmencken at gmail dot com  2010-05-12 22:29 -------
Some results:

October 15, 2009
    GCC 4.4.2 has been released.
January 21, 2010
    GCC 4.4.3 has been released.

initially bad: 1a47c687053db495606b79a42ddefd0671ce3b15 (2010-01-21)
initially good: e5f3e814b30565641f3b4c55c37d9e68b9984f6d (2009-10-15)

----------------------------------------

[bad] fa2e3a2c9483e5ca826addb69670f7117e52c729 (2009-11-27):
    $ objdump -T ./stage1-powerpc-gnu-linux-uclibc/libgcc/libgcc_s.so.1 | grep
Unwind_GetIP
    0000c020 g    DF .text  00000008  GCC_3.0     _Unwind_GetIP

[bad] 5cb65cdfb7c87b5e1919752c286dbb8eecdc2732 (2009-11-06):
    $ objdump -T ./prev-powerpc-gnu-linux-uclibc/libgcc/libgcc_s.so.1 | grep
Unwind_GetIP
    0000c020 g    DF .text      00000008  GCC_3.0     _Unwind_GetIP

[bad] 98b2109eead9249c73d66d3d55c3dd2cdbcbcaca (2009-10-27):
    $ objdump -T ./prev-powerpc-gnu-linux-uclibc/libgcc/libgcc_s.so.1 | grep
Unwind_GetIP
    0000c020 g    DF .text      00000008  GCC_3.0     _Unwind_GetIP

[bad] 3c692e317294e8858003ca92d3ae4e1bf7d3c8ca (2009-10-17):
    $ objdump -T ./prev-powerpc-gnu-linux-uclibc/libgcc/libgcc_s.so.1 | grep
Unwind_GetIP
    0000c020 g    DF .text      00000008  GCC_3.0     _Unwind_GetIP

----------------------------------------

git-bisect log:
git bisect start
# bad: [1a47c687053db495606b79a42ddefd0671ce3b15] 2010-01-21  Martin Jambor 
<mjambor@suse.cz>
git bisect bad 1a47c687053db495606b79a42ddefd0671ce3b15
# good: [e5f3e814b30565641f3b4c55c37d9e68b9984f6d] * config/h8300/h8300.c (F):
New. (Fpa): New. (h8300_emit_stack_adjustment): Call them. (push): Likewise.
(h8300_push_pop): Likewise. (h8300_expand_prologue): Likewise. *
config/h8300/h8300.h (DWARF2_DEBUGGING_INFO): Define.
(MUST_USE_SJLJ_EXCEPTIONS): Define. (INCOMING_RETURN_ADDR_RTX): Define.
(INCOMING_FRAME_SP_OFFSET): Define. (DWARF_CIE_DATA_ALIGNMENT): Define.
git bisect good e5f3e814b30565641f3b4c55c37d9e68b9984f6d
# bad: [fa2e3a2c9483e5ca826addb69670f7117e52c729]       * config/i386/i386.c
(ix86_emit_restore_sse_regs_using_mov): Remove     unused insn variable.   *
genemit.c (output_peephole2_scratches): Only declare and initialize      
_regs_allocated if it will be ever used.        * cfgloopmanip.c
(create_empty_if_region_on_edge): Remove unused        succ_bb variable.      
(create_empty_loop_on_edge): Remove unused freq and cnt variables.  *
unwind-c.c (PERSONALITY_FUNCTION): Remove unused action_record        variable.
git bisect bad fa2e3a2c9483e5ca826addb69670f7117e52c729
# bad: [5cb65cdfb7c87b5e1919752c286dbb8eecdc2732] 2009-11-06  Jerry DeLisle 
<jvdelisle@gcc.gnu.org>
git bisect bad 5cb65cdfb7c87b5e1919752c286dbb8eecdc2732
# bad: [98b2109eead9249c73d66d3d55c3dd2cdbcbcaca]       * ChangeLog: Fix
formatting.    * testsuite/ChangeLog: Ditto.
git bisect bad 98b2109eead9249c73d66d3d55c3dd2cdbcbcaca
# skip: [a90b5ee3aa9ae1aa5ca5269afefcdc5a7f8c44ca] 2009-10-20  Paolo Carlini 
<paolo.carlini@oracle.com>
git bisect skip a90b5ee3aa9ae1aa5ca5269afefcdc5a7f8c44ca
# bad: [3c692e317294e8858003ca92d3ae4e1bf7d3c8ca]       * gcc.pot: Regenerate.
git bisect bad 3c692e317294e8858003ca92d3ae4e1bf7d3c8ca

----

Now I'm going to find "good" one (as I got, it might be not Oct 15, 2009 due to
some "freeze" or such). And will build "retail" 4.4.2 and 4.4.3. Bootstrap
directories will be packed and uploaded.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43911

[Bug c++/43911] [4.4/4.5 Regression] g++ can't compile any even trivial c++ source: undefined reference to `_Unwind_GetIPInfo'

[dougmencken at gmail dot com]

------- Comment #27 from dougmencken at gmail dot com  2010-05-16 09:15 -------
This is actually not a regression. It all belongs to my setup: I'm using
busybox (without any coreutils and other shells) and uclibc. Here's the diff
made from bootstrap directories from my setup and gentoo stage 2 uclibc:
http://ftp.osuosl.org/pub/manulix/misc/diff-gcc-4.4.2-bootstraps.out

libgcc/libgcc.map in the second doesn't include _Unwind_GetIPInfo and a bunch
of others. This might be due to uname -p = unknown and such. But it is not a
regression in GCC.

Now closing this bug as WORKSFORME. Sorry for your time.


-- 

dougmencken at gmail dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |WORKSFORME


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43911