[MPlayer-dev-eng] fast_memcpy namespace collision

D Richard Felker III dalias at aerifal.cx
Mon Jan 19 18:06:02 CET 2004


On Mon, Jan 19, 2004 at 10:44:31PM +1000, Robert Lunnon wrote:
> I have just built mplayer under Suse 9 and I am having some performamce 
> problems with it ( I have set up a K6-2/450 box as a multimedis box). Anyway 
> I noticed it drops quite a few frames palying DVDs but doesn't playing DIvX 
> media files hmm.
> 
> I built it with profiling (-pg) and profiled it and to my surprise I found a 
> routine fast_memcpy was consuming 18% of the CPU
> 
> There is an implementaion of this in libvo/aclib.c 
> 
> I ran Mplayer under gdb set a breakpoint at fast_memcpy and ran it. Lo and 
> Behold I found that it broke at fast_memcpy, not from libvo but rather a 
> fast_memcpy in the c runtime startoff crti.S 

Send a bugreport to suse or glibc developers (if it's in stock glibc).
Including a function named fast_memcpy violates ansi or posix or
something.

Rich




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