On Mon, Jun 12, 2017 at 3:29 PM, Diego Biurrun <di...@biurrun.de> wrote:
> On Sun, Jun 11, 2017 at 11:49:45PM +0200, Hendrik Leppkes wrote:
>> On Sun, Jun 11, 2017 at 11:45 PM, Diego Biurrun <di...@biurrun.de> wrote:
>> > On Sun, Jun 11, 2017 at 11:27:07PM +0200, Hendrik Leppkes wrote:
>> >> On Sun, Jun 11, 2017 at 11:22 PM, Diego Biurrun <di...@biurrun.de> wrote:
>> >> > On Sun, Jun 11, 2017 at 10:52:18AM +0200, Hendrik Leppkes wrote:
>> >> >> On Sat, Jun 10, 2017 at 4:47 PM, Diego Biurrun <di...@biurrun.de> 
>> >> >> wrote:
>> >> >> > @@ -222,7 +222,7 @@ void av_log_set_level(int level);
>> >> >> >   * @param callback A logging function with a compatible signature.
>> >> >> >   */
>> >> >> > -void av_log_set_callback(void (*callback)(void*, int, const char*, 
>> >> >> > va_list));
>> >> >> > +void av_log_set_callback(void (*callback)(const void *, int, const 
>> >> >> > char *, va_list));
>> >> >>
>> >> >> Doesn't that break every caller of av_log_set_callback because they
>> >> >> now have a mis-matching function signature?
>> >> >
>> >> > No? They'll get a warning, yes ..
>> >>
>> >> Well I just tried and my build breaks (C++ code calling that function, 
>> >> fwiw).
>> >
>> > Doh - what error do you get?
>> >
>>
>> error C2664: 'void av_log_set_callback(void (__cdecl *)(const void
>> *,int,const char *,va_list))': cannot convert argument 1 from 'void
>> (__cdecl *)(void *,int,const char *,va_list)' to 'void (__cdecl
>> *)(const void *,int,const char *,va_list)'
>> (from MSVC)
>>
>> C++ doesn't like implicit conversions of function pointers, it needs
>> to match exactly.
>
> That is .. C++ ..
>

Type safety is a bad thing? :)

- Hendrik
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