Fixing the glibc adobe flash incompatibility

Matthew Garrett mjg59 at
Thu Nov 18 04:02:56 UTC 2010

On Wed, Nov 17, 2010 at 09:03:02PM -0600, Chris Adams wrote:

> However, I still think that changing memcpy away from years of "it just
> works" is an ABI change that should not be taken lightly and IMHO
> shouldn't be done in a "stable" release of glibc.  Is memcpy called
> often enough (and on large enough blocks) that this change makes a real
> performance difference (not just on a synthetic memcpy benchmark)?

It's a change in behaviour on x86. Have you verified that overlapping 
memcpy worked on all other glibc-supported architectures until this 

Matthew Garrett | mjg59 at

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