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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.
--- a/display.c
+++ b/display.c
@@ -783,7 +783,7 @@ _rl_optimize_redisplay (void)
/* 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 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)
#define VIS_LLEN(l) ((l) > _rl_vis_botlin ? 0 : (vis_lbreaks[l+1] - vis_lbreaks[l]))
--- a/patchlevel
+++ b/patchlevel
@@ -1,3 +1,3 @@
# Do not edit -- exists only for use by patch
-1
+2
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