we have breakpoints or watchpoints as we might have to ignore internal
breakpoints.
Fix gdb core dumps after `file newfile' commands.
* symtab.h, symfile.c (clear_symtab_users): New routine which
unconditionally clears symtab users. clear_symtab_users_once
commented out as it was a noop anyway.
* objfiles.c (free_objfile): Don't call clear_symtab_users_once.
* objfiles.c (free_all_objfiles), symfile.c (new_symfile_objfile),
xcoffexec.c (exec_close): Call clear_symtab_users if necessary.
* symfile.c (syms_from_objfile): Install cleanups for errors during
symbol reading.
* coffread.c, dbxread.c, mipsread.c, xcoffread.c (*_symfile_read):
Lint cleanup code, call do_cleanups explicitly.
* symfile.c (symbol_file_add): Call new_symfile_objfile and
reinit_frame_cache _after_ the new symbols are read in.
command. Now we use unwind info by default if we can find it.
* config/sparc: Move VARIABLES_INSIDE_BLOCK and SUN_FIXED_LBRAC_BUG
to tm-sparc.h so they are shared between Solaris and SunOS4.
* dbxread.c (process_one_symbol): Deal with SunOS4 acc N_STSYM and
N_GSYM functions.
(can't include it in nm-*.h file because it causes conflicts with
a.out symbol definitions).
* hp300ux-nat.c (fetch_core_registers): Commented out; obsolete.
* config/m68k/hp300hpux.mh (NATDEPFILES): Added coredep.o and
corelow.o.
* config/m68k/nm-hp300hpux.h (NEED_SYS_CORE_H): Defined.
(REGISTER_U_ADDR): Defined.
* config/m68k/xm-hp300hpux.h (HAVE_TERMIOS): Define instead of
HAVE_TERMIO.
* config/pa/xm-hppah.h: Likewise.
an stBlock, skip over the fields of the inner one.
* mips-tdep.c (init_extra_frame_info): If in lenient prologue, call
heuristic_proc_desc rather than just assuming registers not saved.
restrictions for mips hosts.
* config/mips/{xm-irix3.h, xm-mips.h, xm-news-mips.h, xm-riscos.h}:
Use it.
* mips-tdep.c (init_extra_frame_info): Do not check for
mips_in_lenient_prologue if it is a dummy frame.
(find_proc_framesize): Return 0 for linker stubs.
(rp_saved): Tell the caller where rp is saved.
(frame_chain_valid): Return 1 for linker stubs.
(frame_saved_pc): Use return value from rp_saved.
`b 123' and `b foo' if foo is a static function.
* symtab.c (decode_line_1, decode_line_2): New argument `canonical'
to return canonical line specs if requested by the caller.
* breakpoint.c, source.c, symtab.c, symtab.h: Change prototypes and
callers accordingly.
* symtab.c (build_canonical_line_spec): New helper function which
constructs the canonical line spec.
* breakpoint.c (break_command_1): Use canonical line spec instead
of command string as addr_string if necessary.
* source.c (line_info): Fix storage leak.
