Re: Does Xcode's Debug Console Handle/Print Malformed UTF-8 Correctly?
Re: Does Xcode's Debug Console Handle/Print Malformed UTF-8 Correctly?
- Subject: Re: Does Xcode's Debug Console Handle/Print Malformed UTF-8 Correctly?
- From: Andreas Grosam <email@hidden>
- Date: Wed, 24 Aug 2011 20:30:11 +0200
On Aug 24, 2011, at 6:16 PM, Han Ming Ong wrote:
> Andreas,
>
> Is this Xcode 3 or Xcode 4?
This is Xcode 4.1
>
> In any case, it does seem like a bug. Please submit a bug report with a simple test case.
OK, Bug ID# 10016007
>
> thanks, Han Ming
>
> On Aug 24, 2011, at 8:54 AM, Andreas Grosam wrote:
>
>> Well, the topic says it.
>>
>> For instance, a 0xC0 does not exist in a wellformed UTF-8 sequence. When printing such a malformed sequence to Xcode's debug console (via printf or std::cout) Xcode's console apparently becomes corrupt or stops with an unrecoverable error state, and further attempts to write to the console do nothing:
>>
>> printf("XXX\n");
>> printf("abc\xC0\n");
>> printf("XXX\n");
>> fflush(stdout);
>>
>>
>> will output this on Xcode's console:
>>
>> xxx
>>
>>
>> The return values of printf (not shown) do not indicate an error.
>>
>> The same program running in Terminal, will output this:
>> XXX
>> abc?
>> XXX
>>
>> which is OK.
>>
>>
>> According to Unicode v6.0.0, a decoder can stop with an error, or alternatively substitute the minimal malformed subsequence with a replacement character. For Xcode's Console, it would make sense to substitute invalid code units, otherwise the Console becomes useless.
>>
>>
>> Andreas _______________________________________________
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