[PATCH 6/6] Compile sched_getaffinity.c with -fno-builtin-memset

[Joseph Myers]

On Fri, 14 Aug 2015, H.J. Lu wrote:

> Since sched_getaffinity.c calls memset which may not be inlined, we
> should compile it with -fno-builtin-memset so that the internal hidden
> memset is called without PLT.
> 
> OK for master?

memset is called all over the place.  I don't like hardcoding special 
options for particular files based on calls to memset, and especially not 
based on what some particular compiler version happens to do with a 
particular call.  Why doesn't the call to libc_hidden_builtin_proto 
(memset) in include/string.h suffice?  Can you devise some set of 
declarations / toplevel asms to put in a header that will ensure memset 
calls go via a hidden alias (ideally with the compiler knowing it's 
hidden, not just the assembler / linker, so the compiler can do any 
optimizations based on it being an intra-library call)?

-- 
Joseph S. Myers
joseph@codesourcery.com