From: aidalgol@amuri.net
To: Eli Zaretskii <eliz@gnu.org>
Cc: 18438@debbugs.gnu.org
Subject: bug#18438: 24.4.50; assertion failed in bidi.c
Date: Thu, 18 Sep 2014 16:55:07 +1200 [thread overview]
Message-ID: <335c816d2eb99ee7bb1a33d6eef0d789@amuri.net> (raw)
In-Reply-To: <8361gm4yy1.fsf@gnu.org>
On Wed, 17 Sep 2014 08:07:34 +0300, Eli Zaretskii wrote:
>
>> Dump of assembler code for function bidi_check_type:
>> 0x00000001005010c3 <+0>: push %rbp
>> 0x00000001005010c4 <+1>: mov %rsp,%rbp
>> 0x00000001005010c7 <+4>: sub $0x20,%rsp
>> 0x00000001005010cb <+8>: mov %ecx,0x10(%rbp)
>> 0x00000001005010ce <+11>: mov 0x58ab9b(%rip),%rax #
>> 0x100a8bc70 <.refptr.suppress_checking>
>> 0x00000001005010d5 <+18>: movzbl (%rax),%eax
>> 0x00000001005010d8 <+21>: xor $0x1,%eax
>> 0x00000001005010db <+24>: test %al,%al
>> 0x00000001005010dd <+26>: je 0x1005010ff
>> <bidi_check_type+60>
>> 0x00000001005010df <+28>: cmpl $0x17,0x10(%rbp)
>> 0x00000001005010e3 <+32>: jbe 0x1005010ff
>> <bidi_check_type+60>
>> 0x00000001005010e5 <+34>: mov $0x149,%r8d
>> 0x00000001005010eb <+40>: lea 0x5599de(%rip),%rdx #
>> 0x100a5aad0 <DEFAULT_REHASH_SIZE+56>
>> 0x00000001005010f2 <+47>: lea 0x5599df(%rip),%rcx #
>> 0x100a5aad8 <DEFAULT_REHASH_SIZE+64>
>> 0x00000001005010f9 <+54>: callq 0x1005b9a15 <die>
>> => 0x00000001005010fe <+59>: nop
>> 0x00000001005010ff <+60>: add $0x20,%rsp
>> 0x0000000100501103 <+64>: pop %rbp
>> 0x0000000100501104 <+65>: retq
>> End of assembler dump.
>
> My reading of this is:
>
> . the value being tested is originally in ECX
> . it is stored in a temporary local variable at RBP+0x10
> . then it is compared with 0x17 (decimal 23)
>
> So you have two places to check: the ECX register and the value
> pointed to by RBP+0x10.
OK, I've got the first one, but what's the syntax for "value at address
X+Y"?
next prev parent reply other threads:[~2014-09-18 4:55 UTC|newest]
Thread overview: 96+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-09 21:41 bug#18438: 24.4.50; assertion failed in bidi.c aidalgol
2014-09-10 0:16 ` Stefan Monnier
2014-09-10 18:55 ` Aidan Gauland
2014-09-10 19:09 ` Eli Zaretskii
2014-09-11 4:31 ` aidalgol
2014-09-11 13:18 ` Ken Brown
2014-09-12 1:51 ` aidalgol
2014-09-12 1:55 ` aidalgol
2014-09-12 6:00 ` Eli Zaretskii
2014-09-12 7:46 ` Eli Zaretskii
2014-09-16 1:04 ` aidalgol
2014-09-16 2:47 ` Eli Zaretskii
2014-09-16 2:59 ` aidalgol
2014-09-16 14:33 ` Eli Zaretskii
2014-09-16 22:42 ` aidalgol
2014-09-17 5:07 ` Eli Zaretskii
2014-09-18 4:55 ` aidalgol [this message]
2014-09-18 4:59 ` aidalgol
2014-09-18 14:42 ` Eli Zaretskii
2014-09-21 22:30 ` Ken Brown
2014-09-24 5:07 ` aidalgol
2014-09-24 14:06 ` Ken Brown
2014-09-24 15:01 ` Eli Zaretskii
2014-09-24 16:40 ` Ken Brown
2014-09-24 19:49 ` Eli Zaretskii
2014-09-28 23:03 ` aidalgol
2014-09-10 13:14 ` Ken Brown
2014-09-29 0:56 ` aidalgol
2014-09-29 6:23 ` Eli Zaretskii
2014-09-29 15:50 ` Ken Brown
2014-09-29 17:00 ` Eli Zaretskii
2014-09-29 22:28 ` aidalgol
2014-09-30 15:24 ` Eli Zaretskii
2014-09-30 16:09 ` Ken Brown
2014-09-30 16:27 ` Eli Zaretskii
2014-09-30 23:06 ` aidalgol
2014-10-01 2:39 ` Eli Zaretskii
2014-10-01 2:58 ` aidalgol
2014-10-01 14:42 ` Eli Zaretskii
2014-10-01 21:56 ` aidalgol
2014-10-01 2:40 ` Ken Brown
2014-10-08 22:20 ` aidalgol
2014-10-09 7:29 ` Eli Zaretskii
2014-10-10 2:21 ` aidalgol
2014-10-10 7:19 ` Eli Zaretskii
2014-10-10 7:26 ` Eli Zaretskii
2014-10-10 13:54 ` Ken Brown
2014-10-10 15:12 ` Eli Zaretskii
2014-10-10 17:14 ` Ken Brown
2014-10-11 1:57 ` Ken Brown
2014-10-11 7:11 ` Eli Zaretskii
2014-10-11 13:58 ` Ken Brown
2014-10-11 14:24 ` Eli Zaretskii
2014-10-11 16:33 ` Ken Brown
2014-10-11 16:52 ` Eli Zaretskii
2014-10-11 17:17 ` Ken Brown
2014-10-15 0:58 ` aidalgol
2014-10-15 5:13 ` Eli Zaretskii
2014-10-15 19:29 ` aidalgol
2014-10-16 7:27 ` Eli Zaretskii
2014-10-16 13:11 ` Ken Brown
2014-10-16 13:38 ` Eli Zaretskii
2014-10-19 14:39 ` Eli Zaretskii
2014-10-19 15:37 ` Ken Brown
2014-10-19 18:10 ` Eli Zaretskii
2014-10-19 19:49 ` aidalgol
2014-10-19 20:20 ` aidalgol
2014-10-20 15:46 ` Eli Zaretskii
2014-10-20 16:51 ` Eli Zaretskii
2014-10-20 19:35 ` Ivan Shmakov
2014-10-20 19:39 ` Eli Zaretskii
2014-10-20 20:02 ` Ivan Shmakov
2014-10-20 20:59 ` Ken Brown
2014-10-21 15:42 ` Eli Zaretskii
2014-10-21 16:18 ` Ken Brown
2014-10-21 19:38 ` aidalgol
2014-10-21 21:12 ` Ken Brown
2014-10-21 21:58 ` aidalgol
2014-10-21 22:21 ` Ken Brown
2014-10-21 22:38 ` aidalgol
2014-10-22 4:16 ` aidalgol
2014-10-22 15:24 ` Eli Zaretskii
2014-10-22 17:16 ` Eli Zaretskii
2014-10-22 20:39 ` Ken Brown
2014-10-23 20:38 ` aidalgol
2014-10-23 21:54 ` aidalgol
2014-10-24 6:50 ` Eli Zaretskii
2014-10-24 19:18 ` Ken Brown
2014-10-24 21:19 ` Ken Brown
2014-10-29 4:30 ` aidalgol
2014-10-29 12:15 ` Ken Brown
2014-10-29 14:37 ` Eli Zaretskii
2015-12-26 15:37 ` bug#17817: " Lars Ingebrigtsen
2015-12-26 15:43 ` Ken Brown
2014-10-29 14:17 ` Eli Zaretskii
2014-10-23 4:15 ` aidalgol
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