segfault in bfd_elf32_bfd_final_link

[Ethan Aubin]

Hi, 

I'm having some trouble w/ ld (GNU ld version 2.13.90.0.10 20021010
Debian GNU/Linux) segfaulting. I don't know ld well enough to really
know what to hunt for, but there is a stacktrace at the end of this
email. To replicate it: 

> echo 'int id (int i) { return i; }' > t.c
> gcc -v -shared t.c
Reading specs from /usr/lib/gcc-lib/i386-linux/3.0.4/specs
Configured with: ../src/configure -v
--enable-languages=c,c++,java,f77,objc --prefix=/usr
--infodir=/share/info --mandir=/share/man --enable-shared --with-gnu-as
--with-gnu-ld --with-system-zlib --enable-long-long --enable-nls
--without-included-gettext --disable-checking --enable-threads=posix
--enable-java-gc=boehm --with-cpp-install-dir=bin --enable-objc-gc
i386-linux
Thread model: posix
gcc version 3.0.4
 /usr/lib/gcc-lib/i386-linux/3.0.4/cc1 -lang-c -v -D__GNUC__=3
-D__GNUC_MINOR__=0 -D__GNUC_PATCHLEVEL__=4 -D__ELF__ -Dunix -Dlinux
-D__ELF__ -D__unix__ -D__linux__ -D__unix -D__linux -Asystem=posix
-D__NO_INLINE__ -D__STDC_HOSTED__=1 -Acpu=i386 -Amachine=i386 -Di386
-D__i386 -D__i386__ -D__tune_i386__ t.c -quiet -dumpbase t.c -version -o
/tmp/cc4V4LuW.s
GNU CPP version 3.0.4 (cpplib) (i386 Linux/ELF)
GNU C version 3.0.4 (i386-linux)
        compiled by GNU C version 3.0.4.
ignoring nonexistent directory "/usr/i386-linux/include"
#include "..." search starts here:
#include <...> search starts here:
 /usr/local/include
 /usr/lib/gcc-lib/i386-linux/3.0.4/include
 /usr/include
End of search list.
 as -V -Qy -o /tmp/cccnTxEX.o /tmp/cc4V4LuW.s
GNU assembler version 2.13.90.0.10 (i386-linux) using BFD version
2.13.90.0.10 20021010 Debian GNU/Linux
 /usr/lib/gcc-lib/i386-linux/3.0.4/collect2 -m elf_i386 -shared
/usr/lib/gcc-lib/i386-linux/3.0.4/../../../crti.o
/usr/lib/gcc-lib/i386-linux/3.0.4/crtbeginS.o
-L/usr/lib/gcc-lib/i386-linux/3.0.4
-L/usr/lib/gcc-lib/i386-linux/3.0.4/../../.. /tmp/cccnTxEX.o -lgcc_s -lc
-lgcc_s /usr/lib/gcc-lib/i386-linux/3.0.4/crtendS.o
/usr/lib/gcc-lib/i386-linux/3.0.4/../../../crtn.o
collect2: ld terminated with signal 11 [Segmentation fault], core dumped

Running ld in the gdb gives:

(gdb) run -verbose -m elf_i386 -shared -o dllt.so
/usr/lib/gcc-lib/i386-linux/3.0.4/../../../crti.o
/usr/lib/gcc-lib/i386-linux/3.0.4/crtbeginS.o
-L/usr/lib/gcc-lib/i386-linux/3.0.4
-L/usr/lib/gcc-lib/i386-linux/3.0.4/../../.. t.o -lgcc_s -lc -lgcc_s
/usr/lib/gcc-lib/i386-linux/3.0.4/crtendS.o
/usr/lib/gcc-lib/i386-linux/3.0.4/../../../crtn.o
Starting program: /usr/bin/ld -verbose -m elf_i386 -shared -o dllt.so
/usr/lib/gcc-lib/i386-linux/3.0.4/../../../crti.o
/usr/lib/gcc-lib/i386-linux/3.0.4/crtbeginS.o
-L/usr/lib/gcc-lib/i386-linux/3.0.4
-L/usr/lib/gcc-lib/i386-linux/3.0.4/../../.. t.o -lgcc_s -lc -lgcc_s
/usr/lib/gcc-lib/i386-linux/3.0.4/crtendS.o
/usr/lib/gcc-lib/i386-linux/3.0.4/../../../crtn.o
(no debugging symbols found)...(no debugging symbols found)...
GNU ld version 2.13.90.0.10 20021010 Debian GNU/Linux
  Supported emulations:
   elf_i386
   i386linux
using internal linker script:
==================================================
/* Script for --shared -z combreloc: shared library, combine & sort
relocs */
OUTPUT_FORMAT("elf32-i386", "elf32-i386",
              "elf32-i386")
OUTPUT_ARCH(i386)
ENTRY(_start)
SEARCH_DIR("/usr/i386-linux/lib"); SEARCH_DIR("/usr/lib");
SEARCH_DIR("/usr/local/lib"); SEARCH_DIR("/lib");
/* Do we need any of these for elf?
   __DYNAMIC = 0;    */
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  . = ALIGN (0x1000) - ((0x1000 - .) & (0x1000 - 1)); . =
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       actually link against crtbegin.o; the
       linker won't look for a file to match a
       wildcard.  The wildcard also means that it
       doesn't matter which directory crtbegin.o
       is in.  */
    KEEP (*crtbegin.o(.ctors))
    /* We don't want to include the .ctor section from
       from the crtend.o file until after the sorted ctors.
       The .ctor section from the crtend file contains the
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==================================================
attempt to open /usr/lib/gcc-lib/i386-linux/3.0.4/../../../crti.o
succeeded
/usr/lib/gcc-lib/i386-linux/3.0.4/../../../crti.o
attempt to open /usr/lib/gcc-lib/i386-linux/3.0.4/crtbeginS.o succeeded
/usr/lib/gcc-lib/i386-linux/3.0.4/crtbeginS.o
attempt to open t.o succeeded
t.o
attempt to open /usr/lib/gcc-lib/i386-linux/3.0.4/libgcc_s.so succeeded
-lgcc_s (/usr/lib/gcc-lib/i386-linux/3.0.4/libgcc_s.so)
attempt to open /usr/lib/gcc-lib/i386-linux/3.0.4/libc.so failed
attempt to open /usr/lib/gcc-lib/i386-linux/3.0.4/libc.a failed
attempt to open /usr/lib/gcc-lib/i386-linux/3.0.4/../../../libc.so
succeeded
opened script file /usr/lib/gcc-lib/i386-linux/3.0.4/../../../libc.so
opened script file /usr/lib/gcc-lib/i386-linux/3.0.4/../../../libc.so
attempt to open /lib/libc.so.6 succeeded
/lib/libc.so.6
attempt to open /usr/lib/libc_nonshared.a succeeded
attempt to open /usr/lib/gcc-lib/i386-linux/3.0.4/libgcc_s.so succeeded
-lgcc_s (/usr/lib/gcc-lib/i386-linux/3.0.4/libgcc_s.so)
attempt to open /usr/lib/gcc-lib/i386-linux/3.0.4/crtendS.o succeeded
/usr/lib/gcc-lib/i386-linux/3.0.4/crtendS.o
attempt to open /usr/lib/gcc-lib/i386-linux/3.0.4/../../../crtn.o
succeeded
/usr/lib/gcc-lib/i386-linux/3.0.4/../../../crtn.o
(no debugging symbols found)...(no debugging symbols found)...
Program received signal SIGSEGV, Segmentation fault.
0x4004cd76 in bfd_elf32_bfd_final_link () from
/usr/lib/libbfd-2.13.90.0.10.so
(gdb) backtrace 
#0  0x4004cd76 in bfd_elf32_bfd_final_link () from
/usr/lib/libbfd-2.13.90.0.10.so
#1  0x40033b4d in bfd_hash_traverse () from
/usr/lib/libbfd-2.13.90.0.10.so
#2  0x400340e8 in bfd_link_hash_traverse () from
/usr/lib/libbfd-2.13.90.0.10.so
#3  0x4004bab9 in bfd_elf32_bfd_final_link () from
/usr/lib/libbfd-2.13.90.0.10.so
#4  0x08058abd in bfd_link_hash_lookup ()
#5  0x08056bc6 in bfd_link_hash_lookup ()
#6  0x4009a9d3 in __libc_start_main () from /lib/libc.so.6

If there is any other debug info that I can send, let me know. Regards -
address@hidden