[PD] big files with textfile

[Hans-Christoph Steiner]

On Oct 27, 2007, at 2:44 PM, Mathieu Bouchard wrote:

> On Sat, 27 Oct 2007, marius schebella wrote:
>
>> textfile can handle bigger files than msgfile, but there seems to  
>> be a limit, too. I tried to open a >250MB file, and Pd crashed.  
>> marius.
>
> If you measure bytes using an int32, the limit is 2GB, but if you  
> measure it in bits, the limit is 256MB. [textfile] does read all  
> the file into a buffer as big as the file. I didn't find anything  
> that counts memory in bits, so perhaps it's just a coïncidence and  
> the bug was something else, but I did fix another 256MB limit bug  
> recently by adding parentheses in something like:
>
>   num_entries * bits_per_entry / 8
>
> When crossing the limit, the numbers become negative, and trying to  
> allocate a negative amount causes the allocator to either abort the  
> process or return NULL or corrupt memory...

If this is a bug in Pd, it would be great if you submitting a patch,  
or at least posted more info here.

.hc



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