[Freeswitch-users] Fax problem

[Brian West]

Bug reports go in JIRA, FreeSWITCH.org/jira

On Wednesday, July 8, 2015, Alexey Melnichuk <alexeymelnichuck at gmail.com>
wrote:

> FreeSWITCH Version 1.4.20+git~20150703T164215Z~b95362f965~32bit (git
> b95362f
> 2015-07-03 16:42:15Z 32bit)
>
> I think I found bug in spandsp.
>
> `t4_image_put_handler_t` defined as (__cdecl)
>
> typedef int (*t4_image_put_handler_t)(void *user_data, const uint8_t buf[],
> size_t len);
>
> But `tXX_decode_put` functions defined as `__stdcall`.
> So when I do
>
> s->image_put_handler = (t4_image_put_handler_t) t4_t6_decode_put;
> ...
> s->image_put_handler(...)
>
> I got AV.
>
> After I declare t4_image_put_handler_t as __stdcall problem solved.
> (Alse need update declaretion to `pre_encoded_put` function)
>
> But I start getting heap corruption on
> `span_free((char *) s->tiff.file);`
>
> Problem is that it uses `strdup` function with different allocator.
> So I just copy function to `alloc.c`
>
> SPAN_DECLARE(char *) span_strdup(const char *str)
> {
>     char *sdup;
>     size_t len = strlen(str) + 1;
>
>     sdup = (char *) span_alloc(len);
>     memcpy(sdup, str, len);
>
>     return sdup;
> }
>
> And use it as
> ds->tiff.file = span_strdup(file);
>
>
>
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-- 

*Brian West*
brian at freeswitch.org


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