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READLINE PATCH REPORT
=====================
Readline-Release: 8.3
Patch-ID: readline83-002
Bug-Reported-by: Tobias Powalowski <tobias.powalowski@pm.me>
Bug-Reference-ID: <6465ed69-d2da-4277-92cf-1046bc97ca60@pm.me>
Bug-Reference-URL: https://lists.gnu.org/archive/html/bug-readline/2025-07/msg00005.html
Bug-Description:
If an application calls rl_save_prompt, which sets rl_prompt to NULL,
without calling rl_set_prompt to set it to a new value, readline redisplay
can dereference a NULL pointer.
Patch (apply with `patch -p0'):
*** ../readline-8.3/display.c Fri May 2 09:20:32 2025
--- display.c Sun Jul 6 17:16:28 2025
***************
*** 784,788 ****
/* Useful shorthand used by rl_redisplay, update_line, rl_move_cursor_relative */
#define INVIS_FIRST() (local_prompt_invis_chars[0])
! #define WRAP_OFFSET(line, offset) ((line <= prompt_last_screen_line) ? local_prompt_invis_chars[line] : 0)
#define W_OFFSET(line, offset) ((line) == 0 ? offset : 0)
--- 784,788 ----
/* Useful shorthand used by rl_redisplay, update_line, rl_move_cursor_relative */
#define INVIS_FIRST() (local_prompt_invis_chars[0])
! #define WRAP_OFFSET(line, offset) ((line <= prompt_last_screen_line && local_prompt_invis_chars) ? local_prompt_invis_chars[line] : 0)
#define W_OFFSET(line, offset) ((line) == 0 ? offset : 0)
*** ../readline-8.2/patchlevel 2013-11-15 08:11:11.000000000 -0500
--- patchlevel 2014-03-21 08:28:40.000000000 -0400
***************
*** 1,3 ****
# Do not edit -- exists only for use by patch
! 1
--- 1,3 ----
# Do not edit -- exists only for use by patch
! 2
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