gcc 4.3.3 fails to build with clang

[llvmbot]

Bugzilla Link	6262
Resolution	WORKSFORME
Resolved on	Aug 06, 2010 01:31
Version	trunk
OS	Linux
Reporter	LLVM Bugzilla Contributor
CC	@efriedma-quic

Extended Description

GCC-4.3.3 fails to build, because some tool named gengtype segfaults. It doesn't segfault, when using gcc to build gcc.

Steps to reproduce:

1. Get this stuff:
   http://ftp.gnu.org/gnu/gcc/gcc-4.4.3/gcc-4.4.3.tar.bz2
   http://www.mpfr.org/mpfr-2.4.2/mpfr-2.4.2.tar.bz2
   http://ftp.gnu.org/gnu/gmp/gmp-5.0.0.tar.bz2

2. Patch gcc with this patch: http://www.linuxfromscratch.org/patches/lfs/development/gcc-4.4.3-startfiles_fix-1.patch

3. unpack gmp and mfr packages into the source directory:
   cd gcc-4.3.3/
   tar -jxf ../mpfr-2.4.2.tar.bz2
   mv -v mpfr-2.4.2 mpfr
   tar -jxf ../gmp-5.0.0.tar.bz2
   mv -v gmp-5.0.0 gmp

4. Make a separate build directory
   mkdir -v ../gcc-build
   cd ../gcc-build

5. configure
   CC=clang ../gcc-4.4.3/configure
   --target=x86_64-lfs-linux-gnu --prefix=/tools
   --disable-nls --disable-shared --disable-multilib
   --disable-decimal-float --disable-threads
   --disable-libmudflap --disable-libssp
   --disable-libgomp --enable-languages=c

6. Run make. Notice this output:
   make[2]: Entering directory /mnt/lfs/sources/gcc-build/gcc' build/gengtype ../../gcc-4.4.3/gcc gtyp-input.list make[2]: *** [s-gtype] Segmentation fault make[2]: Leaving directory /mnt/lfs/sources/gcc-build/gcc'
   make[1]: *** [all-gcc] Error 2
   make[1]: Leaving directory `/mnt/lfs/sources/gcc-build'
   make: *** [all] Error 2

Additional information:
Machine type is x86_64, Debian (mostly Lenny). I was trying to follow the Linux From Scratch project, only with clang.

$ file gcc/build/gengtype
gcc/build/gengtype: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.8, not stripped

Program received signal SIGSEGV, Segmentation fault.
0x000000000040c9cc in set_lang_bitmap ()
Current language: auto; currently asm
(gdb) bt
#​0 0x000000000040c9cc in set_lang_bitmap ()
#​1 0x0000000000404c75 in read_input_list ()
#​2 0x0000000000404585 in main ()
(gdb) bt full
#​0 0x000000000040c9cc in set_lang_bitmap ()
No locals.
#​1 0x0000000000404c75 in read_input_list ()
No locals.
#​2 0x0000000000404585 in main ()
No locals.

[efriedma-quic]

Is this still an issue with trunk clang?

[efriedma-quic]

Building gcc with clang appears to work on x86-64 Linux; please reopen if you still run into issues.