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bug#15570: 24.3.50; Null pointer crash in (ns-convert-utf8-nfd-to-nfc "\
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From: |
Andreas Schwab |
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Subject: |
bug#15570: 24.3.50; Null pointer crash in (ns-convert-utf8-nfd-to-nfc "\377") |
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Date: |
Wed, 09 Oct 2013 18:57:51 +0200 |
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User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux) |
Jan Djärv <jan.h.d@swipnet.se> writes:
> 9 okt 2013 kl. 13:37 skrev Carsten Bormann <cabo@tzi.org>:
>
>> (ns-convert-utf8-nfd-to-nfc "\377")
>>
>> crashes in strlen (called from build_string),
>> as it is run on a null-pointer (apparently returned from [utfStr
>> UTF8String]).
>>
>> Program received signal EXC_BAD_ACCESS, Could not access memory.
>> Reason: KERN_INVALID_ADDRESS at address: 0x0000000000000000
>
> Eh, don't do that?
Lisp-level functions should always validate their arguments.
Andreas.
--
Andreas Schwab, schwab@linux-m68k.org
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