[Bug symtab/17391] gdb internal error: assertion fails in regcache.c:178

["cvs-commit at gcc dot gnu.org" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=17391

--- Comment #5 from cvs-commit at gcc dot gnu.org <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Doug Evans <devans@sourceware.org>:

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=0fde2c536bc483baa4baa2990ebebfb3a7c00415

commit 0fde2c536bc483baa4baa2990ebebfb3a7c00415
Author: Doug Evans <dje@google.com>
Date:   Mon Oct 26 16:05:21 2015 -0700

    PR symtab/17391 gdb internal error: assertion fails in regcache.c:178

    gdb/ChangeLog:

        * dwarf2-frame.c (dwarf2_restore_rule): Call dwarf_reg_to_regnum
        instead of gdbarch_dwarf2_reg_to_regnum.
        (dwarf2_frame_cache): Ditto.
        (read_addr_from_reg): Call dwarf_reg_to_regnum_or_error instead of
        gdbarch_dwarf2_reg_to_regnum.
        (get_reg_value): Ditto.
        (dwarf2_fetch_cfa_info): Ditto.
        (dwarf2_frame_prev_register): Ditto.
        * dwarf2loc.c: #include "complaints.h".
        (dwarf_expr_read_addr_from_reg): Call dwarf_reg_to_regnum_or_error
        instead of gdbarch_dwarf2_reg_to_regnum.
        (dwarf_expr_get_reg_value): Ditto.
        (read_pieced_value): Ditto.
        (write_pieced_value): Ditto.
        (dwarf2_evaluate_loc_desc_full): Ditto.
        (dwarf_reg_to_regnum): New function.
        (throw_bad_regnum_error): New function.
        (dwarf_reg_to_regnum_or_error): Renamed from
        dwarf2_reg_to_regnum_or_errorChange to take a ULONGEST regnum.
        All callers updated.  Call throw_bad_regnum_error.
        (locexpr_regname): Improve text of bad register number.
        * dwarf2loc.h (dwarf_reg_to_regnum): Declare.
        (dwarf_reg_to_regnum_or_error): Update prototype.
        * dwarf2expr.c: #include "dwarf2loc.h".
        (dwarf_block_to_sp_offset): Call dwarf_reg_to_regnum instead of
        gdbarch_dwarf2_reg_to_regnum.
        * gdbarch.sh (dwarf2_reg_to_regnum): Add comment.
        * gdbarch.h: Regenerate.
        * amd64-tdep.c (amd64_dwarf_reg_to_regnum): Remove warning for bad
        register.
        * avr-tdep.c (avr_dwarf_reg_to_regnum): Ditto.
        * cris-tdep.c (cris_dwarf2_reg_to_regnum): Ditto.
        * bfin-tdep.c (bfin_reg_to_regnum): Fix error checking.
        * hppa-linux-tdep.c (hppa_dwarf_reg_to_regnum): Improve error checking.
        Remove warning for bad register.
        * hppa-tdep.c (hppa64_dwarf_reg_to_regnum): Ditto.
        * i386-tdep.c (i386_svr4_dwarf_reg_to_regnum): Renamed from
        i386_svr4_reg_to_regnum.  Return -1 for bad registers.
        (i386_svr4_reg_to_regnum): New function.
        (i386_gdbarch_init): Update call to set_gdbarch_dwarf2_reg_to_regnum.
        * microblaze-tdep.c (microblaze_dwarf2_reg_to_regnum): Don't assert
        on bad registers, return -1.
        * msp430-tdep.c (msp430_dwarf2_reg_to_regnum): Improve error checking.
        Remove warning for bad register.
        * nios2-tdep.c: Add static assert for NIOS2_NUM_REGS.
        (nios2_dwarf_reg_to_regnum): Fix off-by-one error.
        Remove warning for bad register.  Return -1 for bad register.
        * rl78-tdep.c (rl78_dwarf_reg_to_regnum): Don't flag an internal error
        for bad register, return -1.
        * rx-tdep.c (rx_dwarf_reg_to_regnum): Ditto.
        * m68k-tdep.c (m68k_dwarf_reg_to_regnum): Fix error result.
        * mep-tdep.c (mep_debug_reg_to_regnum): Ditto.
        * mips-tdep.c (mips_stab_reg_to_regnum): Ditto.
        (mips_dwarf_dwarf2_ecoff_reg_to_regnum): Ditto.
        * mn10300-tdep.c (mn10300_dwarf2_reg_to_regnum): Remove warning
        for bad regs.
        * xtensa-tdep.c (xtensa_reg_to_regnum): Remove internal error for
        bad regs.  Fix error result.
        * stabsread.c (stab_reg_to_regnum): Watch for negative regno.
        (reg_value_complaint): Update complaint text.
        * mdebugread.c (reg_value_complaint): New function.
        (mdebug_reg_to_regnum): Rewrite to watch for bad reg numbers.

    gdb/testsuite/ChangeLog:

        * lib/dwarf.exp (_location): Add support for DW_OP_regx.
        * gdb.dwarf2/bad-regnum.c: New file.
        * gdb.dwarf2/bad-regnum.exp: New file.

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