[Bug lto/67111] New: ld -plugin segmentation fault

["dilyan.palauzov at aegee dot org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67111

            Bug ID: 67111
           Summary: ld -plugin segmentation fault
           Product: gcc
           Version: 6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: lto
          Assignee: unassigned at gcc dot gnu.org
          Reporter: dilyan.palauzov at aegee dot org
  Target Milestone: ---

I have the newest gcc (g207b8288) and binutils (gedc66de).

binutils is configured with "/git/binutils-gdb/configure
--target=armv6kz-hardfloat-linux-gnueabi --with-sysroot=/raspberryOS/
--with-system-readline --enable-gold --with-system-zlib --with-mmap
--with-python=python3"

gcc is configured with "/git/gcc/configure --enable-host-shared
--enable-threads=posix --enable-languages=c,c++,jit,lto --enable-targets=all
--enable-nls --with-linker-hash-style=gnu --enable-interpreter
--enable-libgcj-multifile --with-system-zlib --with-mtune=arm1176jzf-s
--with-arch=armv6kz --target=armv6kz-hardfloat-linux-gnueabi --with-fpu=vfp
--with-float=hard --with-sysroot=/raspberryOS/"

I compile this programm  c.c

  int  main ()  {
    return 0;
  }

with
$ ulimit -c unlimited
$ armv6kz-hardfloat-linux-gnueabi-gcc -pipe -O3 -flto -fno-fat-lto-objects 
-Wl,-O1,-z,relro,-s -flto=4
-Wl,-plugin,/usr/local/libexec/gcc/armv6kz-hardfloat-linux-gnueabi/6.0.0/liblto_plugin.so
c.c
collect2: fatal error: ld terminated with signal 11 [Segmentation fault], core
dumped
compilation terminated.

$ gdb armv6kz-hardfloat-linux-gnueabi-ld core 
warning: core file may not match specified executable file.
[New LWP 19330]

warning: Could not load shared library symbols for linux-vdso.so.1.
Do you need "set solib-search-path" or "set sysroot"?
Core was generated by
`/usr/local/lib/gcc/armv6kz-hardfloat-linux-gnueabi/6.0.0/../../../../armv6kz-ha'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  get_symbols (handle=<optimized out>, nsyms=<optimized out>, syms=<optimized
out>, def_ironly_exp=9) at /git/binutils-gdb/ld/plugin.c:667
667           if (syms[n].def != LDPK_UNDEF)



(gdb) bt f

#0  get_symbols (handle=<optimized out>, nsyms=<optimized out>, syms=<optimized
out>, def_ironly_exp=9) at /git/binutils-gdb/ld/plugin.c:667
        blhe = <optimized out>
        owner_sec = <optimized out>
        res = <optimized out>
        input = <optimized out>
        abfd = 0x128adb0
        n = <optimized out>
#1  0x00007fdad3f67448 in write_resolution () at
/git/gcc/lto-plugin/lto-plugin.c:476
        info = 0x128cf50
        symtab = 0x128cf60
        syms = <optimized out>
        i = 0
        f = 0x14d5970
#2  all_symbols_read_handler () at /git/gcc/lto-plugin/lto-plugin.c:643
        i = <optimized out>
        num_lto_args = <optimized out>
        lto_argv = 0x14d57c0
        lto_arg_ptr = 0x14d57c0
        __PRETTY_FUNCTION__ = "all_symbols_read_handler"
#3  0x000000000041fe02 in plugin_call_all_symbols_read () at
/git/binutils-gdb/ld/plugin.c:1210
        rv = <optimized out>
        curplug = 0x1249fd0
#4  0x00000000004155df in lang_process () at /git/binutils-gdb/ld/ldlang.c:6646
        added = {
          head = 0x1247210, 
          tail = 0x125ea00
        }
        files = {
          head = 0x125ea00, 
          tail = 0x124a160
        }
        inputfiles = {
          head = 0x1247210, 
          tail = 0x12d2d38
        }
#5  0x00000000004036c7 in main (argc=43, argv=0x7ffc8b525068) at
/git/binutils-gdb/ld/ldmain.c:419
        emulation = 0x7ffc8b525fbf "armelf_linux_eabi"
        start_time = 0
        start_sbrk = 0x1246000 ""