On Sun, Jun 11, 2017 at 11:49:45PM +0200, Hendrik Leppkes wrote:
> On Sun, Jun 11, 2017 at 11:45 PM, Diego Biurrun <[email protected]> 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 <[email protected]> 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 <[email protected]> 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++ ..

Diego
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