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a350efd4fb
PR tui/25348 points out that, when "gdb -tui" is used, then exiting
the TUI will cause a crash.
This happens because tui_setup_io stashes some readline variables --
but because this happens before readline is initialized, some of these
are NULL. Then, when exiting the TUI, the NULL values are "restored",
causing a crash in readline.
This patch fixes the problem by ensuring that readline is initialized
first. Back in commit 11061048d ("Give a name to the TUI SingleKey
keymap"), a call to rl_initialize was removed from
tui_initialize_readline; this patch resurrects the call, but moves it
to the end of the function, so as not to remove the ability to modify
the SingleKey map from .inputrc.
gdb/ChangeLog
2020-06-16 Tom Tromey <tom@tromey.com>
PR tui/25348:
* tui/tui.c (tui_ensure_readline_initialized): Rename from
tui_initialize_readline. Only run once. Call rl_initialize.
* tui/tui.h (tui_ensure_readline_initialized): Rename from
tui_initialize_readline.
* tui/tui-io.c (tui_setup_io): Call
tui_ensure_readline_initialized.
* tui/tui-interp.c (tui_interp::init): Update.
84 lines
2.2 KiB
C
84 lines
2.2 KiB
C
/* External/Public TUI Header File.
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Copyright (C) 1998-2020 Free Software Foundation, Inc.
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Contributed by Hewlett-Packard Company.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef TUI_TUI_H
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#define TUI_TUI_H
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struct ui_file;
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/* Types of error returns. */
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enum tui_status
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{
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TUI_SUCCESS,
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TUI_FAILURE
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};
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/* Types of windows. */
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enum tui_win_type
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{
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SRC_WIN = 0,
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DISASSEM_WIN,
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DATA_WIN,
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CMD_WIN,
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/* This must ALWAYS be AFTER the major windows last. */
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MAX_MAJOR_WINDOWS,
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};
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extern CORE_ADDR tui_get_low_disassembly_address (struct gdbarch *,
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CORE_ADDR, CORE_ADDR);
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extern void tui_show_assembly (struct gdbarch *gdbarch, CORE_ADDR addr);
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extern bool tui_is_window_visible (enum tui_win_type type);
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extern bool tui_get_command_dimension (unsigned int *width,
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unsigned int *height);
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/* Initialize readline and configure the keymap for the switching key
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shortcut. May be called more than once without issue. */
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extern void tui_ensure_readline_initialized ();
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/* Enter in the tui mode (curses). */
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extern void tui_enable (void);
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/* Leave the tui mode. */
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extern void tui_disable (void);
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enum tui_key_mode
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{
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/* Plain command mode to enter gdb commands. */
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TUI_COMMAND_MODE,
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/* SingleKey mode with some keys bound to gdb commands. */
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TUI_SINGLE_KEY_MODE,
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/* Read/edit one command and return to SingleKey after it's
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processed. */
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TUI_ONE_COMMAND_MODE
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};
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extern enum tui_key_mode tui_current_key_mode;
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/* Change the TUI key mode by installing the appropriate readline
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keymap. */
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extern void tui_set_key_mode (enum tui_key_mode mode);
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extern bool tui_active;
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#endif /* TUI_TUI_H */
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