* gdb.base/break-entry.exp: Move the target use_gdb_stub test before
starting GDB.
* gdb.base/default.exp: Replace target use_gdb_stub checks by global
$use_gdb_stub.
* gdb.base/display.exp: Likewise.
* gdb.base/ending-run.exp: Likewise.
* gdb.base/list.exp (test_listsize): Likewise.
* gdb.base/setshow.exp: Likewise.
* gdb.base/valgrind-db-attach.exp: Set global use_gdb_stub to 1.
* lib/gdb.exp (gdb_run_cmd, gdb_start_cmd): Replace target use_gdb_stub
check by global $use_gdb_stub.
(gdb_test_multiple): Forbid run, start or attach for !$use_gdb_stub.
(default_gdb_start): Set global use_gdb_stub from target use_gdb_stub.
(default_gdb_init): Unset global $use_gdb_stub.
(gdb_continue_to_end, rerun_to_main): Replace target use_gdb_stub check
by global $use_gdb_stub.
* lib/gdbserver-support.exp: Extend comments for set_board_info
gdb_protocol and gdb,socketport.
(gdbserver_start_extended): Set global gdbserver_protocol and
gdbserver_gdbport. Clear global use_gdb_stub.
* lib/mi-support.exp (default_mi_gdb_start): Set global use_gdb_stub
from target use_gdb_stub.
(mi_run_cmd): Replace target use_gdb_stub check by global $use_gdb_stub.
gdb/
* printcmd.c (current_display_number): Update comment.
(disable_current_display_cleanup): Delete.
(do_one_display): Use make_cleanup_restore_integer. Gracefully
catch errors thrown while evaluating and printing the display.
gdb/testsuite/
* gdb.base/display.c (do_loops): New `p_i' local.
* gdb.base/display.exp: Test displaying a variable that is
temporarily at a bad address.
* gdb.cp/formatted-ref.exp (test_p_x_ref_addr): Allow the reference
to be in memory.
* gdb.base/display.c (force_mem): New.
(do_loops): Use it. Add breakpoint comments.
(do_vars): Add a breakpoint comment.
* gdb.base/display.exp: Use gdb_get_line_number. Remove hardcoded
line numbers.
* c-valprint.c (textual_element_type): New.
(c_val_print): Use it. Do not skip address printing for pointers
with a string format.
(c_value_print): Doc update.
* dwarf2read.c (read_array_type): Use make_vector_type.
* gdbtypes.c (make_vector_type): New.
(init_vector_type): Use it.
(gdbtypes_post_init): Initialize builtin_true_unsigned_char.
(_initialize_gdbtypes): Mark int8_t and uint8_t as TYPE_FLAG_NOTTEXT.
* gdbtypes.h (struct builtin_type): Add builtin_true_unsigned_char.
(TYPE_FLAG_NOTTEXT, TYPE_NOTTEXT): New.
(make_vector_type): New.
* printcmd.c (print_formatted): Only handle 's' and 'i' for examine.
Call the language print routine for string format.
(print_scalar_formatted): Call val_print for string format. Handle
unsigned original types for char format.
(validate_format): Do not reject string format.
* stabsread.c (read_type): Use make_vector_type.
* xml-tdesc.c (tdesc_start_vector): Use init_vector_type.
* gdb.texinfo (Output Formats): Update 'c' description. Describe 's'.
(Examining Memory): Update mentions of the 's' format.
(Automatic Display): Likewise.
* gdb.arch/i386-sse.exp: Do not expect character constants.
* gdb.base/charsign.c, gdb.base/charsign.exp: Delete.
* gdb.base/display.exp: Allow print/s.
* gdb.base/printcmds.exp, gdb.base/setvar.exp: Revert signed
and unsigned char array changes.
* printcmd.c (do_one_display): If display/i, start with an initial
line feed to avoid bad layout if there is a branch delay slot.
gdb/testsuite/:
* gdb.base/display.exp: Allow a newline after display/i.
* gdb.base/pc-fp.exp: Likewise.
* gdb.base/sigbpt.exp: Likewise.
* gdb.base/a2-run.exp: Use gdb_skip_stdio_test.
* gdb.base/corefile.exp: Expect the message "Program is being
debugged already" when we send the "corefile" command, since
the preceeding gdb_load may have connected gdb to a remote target.
* gdb.base/display.exp: Disable hardware watchpoints if new
board info variable "no_hardware_watchpoints" is true.
Replace single-letter commands with more readable ones.
* gdb.base/recurse.exp (recurse_tests): Disable hardware watchpoints
if new board info variable "no_hardware_watchpoints" is true.
* gdb.base/restore.exp (restore_tests): Call gdb_skip_stdio_tests
to see if stdio (printf) testing is possible.
* gdb.base/watchpoint.exp: Disable hardware watchpoints if new
board info variable "no_hardware_watchpoints" is true. Use new
proc "gdb_skip_stdio_tests" to see if printf tests are possible.