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[Bug tdep/20955] GDB internal error in cris-tdep.c


https://sourceware.org/bugzilla/show_bug.cgi?id=20955

--- Comment #2 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The gdb-7.12-branch branch has been updated by Yao Qi <qiyao@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=d47caa54a3fbdcf90b68c240b214d59d8befda7c

commit d47caa54a3fbdcf90b68c240b214d59d8befda7c
Author: Yao Qi <yao.qi@linaro.org>
Date:   Mon Dec 12 09:09:43 2016 +0000

    Remove assert on exec_bfd in cris_delayed_get_disassembler

    cris_delayed_get_disassembler has an assert that exec_bfd can't be
    NULL, but this assert can be triggered like this,

    (gdb) set architecture cris
    The target architecture is assumed to be cris
    (gdb) disassemble 0x0,+4
    Dump of assembler code from 0x0 to 0x4:
       0x00000000:
    ../../binutils-gdb/gdb/cris-tdep.c:3798: internal-error: int
cris_delayed_get_disassembler(bfd_vma, disassemble_info*): Assertion `exec_bfd
!= NULL' failed.
    A problem internal to GDB has been detected,
    further debugging may prove unreliable.

    however, cris_get_disassembler does have code to handle the case that
    bfd is NULL,

      /* If there's no bfd in sight, we return what is valid as input in all
         contexts if fed back to the assembler: disassembly *with* register
         prefix.  Unfortunately this will be totally wrong for v32.  */
      if (abfd == NULL)
        return print_insn_cris_with_register_prefix;

    This patch is to remove this assert.

    gdb:

    2016-12-12  Yao Qi  <yao.qi@linaro.org>

        PR tdep/20955
        * cris-tdep.c (cris_delayed_get_disassembler): Remove the
        assert.

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