Re: Infinite loop when trying to bootstrap trunk

[Ismail DÃnmez <ismail at pardus dot org dot tr>]

Saturday 24 November 2007 Tarihinde 03:44:04 yazmÄÅtÄ:
> Hi all,
>
> I am trying to bootstrap gcc with the following config :
>
> ../configure --prefix=/usr --bindir=/usr/i686-pc-linux-gnu/gcc/4.3.0
> --includedir=/usr/lib/gcc/i686-pc-linux-gnu/4.3.0/include
> --datadir=/usr/share/gcc/i686-pc-linux-gnu/4.3.0
> --mandir=/usr/share/gcc/i686-pc-linux-gnu/4.3.0/man
> --infodir=/usr/share/gcc/i686-pc-linux-gnu/4.3.0/info
> --with-gxx-include-dir=/usr/lib/gcc/i686-pc-linux-gnu/4.3.0/include/g++-v3
> --host=i686-pc-linux-gnu --build=i686-pc-linux-gnu --disable-libgcj
> --disable-libssp --disable-multilib --disable-nls --disable-werror
> --disable-checking --enable-clocale=gnu --enable-__cxa_atexit
> --enable-languages=c,c++,fortran,objc,obj-c++,treelang
> --enable-libstdcxx-allocator=new --enable-shared --enable-ssp
> --enable-threads=posix --enable-version-specific-runtime-libs
> --without-included-gettext --without-system-libunwind --with-system-zlib
>
> And build freezes at this point (stuck for ~1 hour and going on 2GB RAM
> Quad Core Xeon ) :
>
> /var/pisi/gcc-4.3.0_pre20071123-30/work/gcc-4.3.0_20071123/build-default-i6
>86-pc-linux-gnu/./prev-gcc/xgcc
> -B/var/pisi/gcc-4.3.0_pre20071123-30/work/gcc-4.3.0_20071123/build-default-
>i686-pc-linux-gnu/./prev-gcc/ -B/usr/i686-pc-linux-gnu/bin/ -c -march=i686
> -ftree-vectorize -O2 -pipe -fomit-frame-pointer -U_FORTIFY_SOURCE
> -fprofile-generate -DIN_GCC   -W -Wall -Wwrite-strings -Wstrict-prototypes
> -Wmissing-prototypes -Wold-style-definition -Wmissing-format-attribute
> -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings   
> -DHAVE_CONFIG_H -I. -I. -I../../gcc -I../../gcc/. -I../../gcc/../include
> -I../../gcc/../libcpp/include  -I../../gcc/../libdecnumber
> -I../../gcc/../libdecnumber/bid -I../libdecnumber    insn-attrtab.c -o
> insn-attrtab.o
>
>
> I attach gdb to build-default-i686-pc-linux-gnu/./prev-gcc/xgcc and break
> to get this backtrace :
>
> #0  0xa7fae410 in __kernel_vsyscall ()
> #1  0xa7e5bf93 in waitpid () from /lib/libc.so.6
> #2  0x0806608a in pex_wait (obj=0x808aca0, pid=966, status=0x80850d0,
> time=0x0) at ../../libiberty/pex-unix.c:100
> #3  0x08066661 in pex_unix_wait (obj=0x808aca0, pid=966, status=0x80850d0,
> time=0x0, done=0, errmsg=0xafc05a54, err=0xafc05a50)
>     at ../../libiberty/pex-unix.c:486
> #4  0x08065d31 in pex_get_status_and_time (obj=0x808aca0, done=0,
> errmsg=0xafc05a54, err=0xafc05a50) at ../../libiberty/pex-common.c:531
> #5  0x08065d94 in pex_get_status (obj=0x808aca0, count=2,
> vector=0xafc05a80) at ../../libiberty/pex-common.c:551
> #6  0x0804c6b2 in execute () at ../../gcc/gcc.c:3012
> #7  0x08050f44 in do_spec (
>     spec=0x806828c "%{E|M|MM:
> %(trad_capable_cpp) %(cpp_options) %(cpp_debug_options)}      %{!E:%{!M:
> %{!MM:          %{traditional|ftraditional:%eGNU C no longer
> supports -traditional without -E}       %{!combine:\t  %{sa"...)
> at ../../gcc/gcc.c:4436
> #8  0x0805654e in main (argc=36, argv=0xafc05dc4) at ../../gcc/gcc.c:6684

Ok looks like this is not a heisenbug, I left the gcc bootstrap going on and 
it took 4+ hours to compile insn-attrtab.c on this machine which looks really 
bad as it takes 2-3 minutes on my laptop.

Any idea where to look?

Regards,
ismail

-- 
Faith is believing what you know isn't so -- Mark Twain