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[Bug ld/830] New: GNU ld 2.15 dumps core during gcc 4.0-pre bootstrap

From: jbuck at welsh-buck dot org
Subject: [Bug ld/830] New: GNU ld 2.15 dumps core during gcc 4.0-pre bootstrap
Date: 6 Apr 2005 16:43:50 -0000

I get a core dump when trying to build gcc from the 4.0 release branch on
sparc-sun-solaris2.8 with the 2.15 binutils for as and ld.

The core dump is in the command

stage1/xgcc -Bstage1/ -B/u/jbuck/cvs.sol2/4_0_branch/sparc-sun-solaris2.8/bin/
 -g -O2 -DIN_GCC   -W -Wall -Wwrite-strings -Wstrict-prototypes
-Wmissing-prototypes -pedantic -Wno-long-long -Wno-variadic-macros
-Wold-style-definition     -DHAVE_CONFIG_H -DGENERATOR_FILE  -o 
build/genattrtab \
 build/genattrtab.o build/genautomata.o \
 build/rtl.o build/read-rtl.o build/ggc-none.o build/min-insn-modes.o
build/gensupport.o build/insn-conditions.o build/print-rtl.o build/errors.o \
 build/varray.o ../build-sparc-sun-solaris2.8/libiberty/libiberty.a -lm
collect2: ld terminated with signal 11 [Segmentation Fault], core dumped

The immediate cause of the crash is a null pointer dereference in 

#0  elf_sort_symbol (arg1=0x0, arg2=0xf7700)
    at ../../binutils-2.15/bfd/elflink.c:2698
2698      vdiff = h1->root.u.def.value - h2->root.u.def.value;
(gdb) p h1
$1 = (struct elf_link_hash_entry *) 0x0
(gdb) p h2
$2 = (struct elf_link_hash_entry *) 0xf7700

The full backtrace is

#0  elf_sort_symbol (arg1=0x0, arg2=0xf7700)
    at ../../binutils-2.15/bfd/elflink.c:2698
#1  0xff2cb7f4 in qsort ()
#2  0x5d724 in elf_link_add_object_symbols (abfd=0x265ec0, info=0xea958)
    at ../../binutils-2.15/bfd/elflink.c:3919
#3  0x5e14c in bfd_elf_link_add_symbols (abfd=0x1, info=0x287ac8)
    at ../../binutils-2.15/bfd/elflink.c:4384
#4  0x22878 in load_symbols (entry=0xeee58, place=0xffbed458)
    at ../../binutils-2.15/ld/ldlang.c:1475
#5  0x230e0 in open_input_bfds (s=0xeee58, force=0)
    at ../../binutils-2.15/ld/ldlang.c:1888
#6  0x26640 in lang_process () at ../../binutils-2.15/ld/ldlang.c:4172
#7  0x29684 in main (argc=658432, argv=0xa0c00)
    at ../../binutils-2.15/ld/ldmain.c:466

           Summary: GNU ld 2.15 dumps core during gcc 4.0-pre bootstrap
           Product: binutils
           Version: 2.15
            Status: NEW
          Severity: normal
          Priority: P2
         Component: ld
        AssignedTo: unassigned at sources dot redhat dot com
        ReportedBy: jbuck at welsh-buck dot org
                CC: bug-binutils at gnu dot org
 GCC build triplet: sparc-sun-solaris2.8
  GCC host triplet: sparc-sun-solaris2.8
GCC target triplet: sparc-sun-solaris2.8


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