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bug#5858: 24.0.50; bidi aborts: "can't happen" happens
From: |
Ari Roponen |
Subject: |
bug#5858: 24.0.50; bidi aborts: "can't happen" happens |
Date: |
Thu, 08 Apr 2010 12:03:55 +0300 |
Hi,
the following code crashes emacs by making code in bidi.c call
abort():
(let ((bidi-display-reordering t))
(insert #x650 #x650) ; ARABIC KASRA
(redisplay))
The place that calls abort() is in bidi_resolve_neutral():
#0 abort () at emacs.c:430
#1 0x0000000000490abe in bidi_resolve_neutral (bidi_it=0x7fffffff9000)
at bidi.c:1577
#2 0x000000000049119a in bidi_level_of_next_char (bidi_it=0x7fffffff9000)
at bidi.c:1713
...
(gdb) up
#1 0x0000000000490abe in bidi_resolve_neutral (bidi_it=0x7fffffff9000)
at bidi.c:1577
1577 abort (); /* can't happen: BNs are
skipped */
(gdb) l
1572 next_type = STRONG_R;
1573 saved_it.next_for_neutral.type = STRONG_R;
1574 break;
1575 case WEAK_BN:
1576 if (!bidi_explicit_dir_char (bidi_it->ch))
1577 abort (); /* can't happen: BNs are
skipped */
1578 /* FALLTHROUGH */
1579 case NEUTRAL_B:
1580 /* Marched all the way to the end of this level run.
1581 We need to use the eor type, whose information is
In GNU Emacs 24.0.50.3 (x86_64-unknown-linux-gnu, GTK+ Version 2.19.7)
of 2010-04-07 on arirop
Windowing system distributor `Fedora Project', version 11.0.10799901
--
Ari Roponen
- bug#5858: 24.0.50; bidi aborts: "can't happen" happens,
Ari Roponen <=