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Re: Does Xcode's Debug Console Handle/Print Malformed UTF-8 Correctly?
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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: Han Ming Ong <email@hidden>
  • Date: Wed, 24 Aug 2011 09:16:25 -0700

Andreas,

Is this Xcode 3 or Xcode 4?

In any case, it does seem like a bug. Please submit a bug report with a simple test case.

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.
>
>
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