Re: CVS commit: src/external/bsd/file

[christos%zoulas.com@localhost (Christos Zoulas)]

On Jan 18, 11:33am, martin%duskware.de@localhost (Martin Husemann) wrote:
-- Subject: Re: CVS commit: src/external/bsd/file

| On Fri, Jan 17, 2014 at 11:32:29PM +0000, David Laight wrote:
| > If the problem actually caused by gcc failing to pair all the conditionals?
| > Compiling with 'clazz' a compile-time constant might show things.
| 
| I don't think so, and I'll leave a final fix to Christos as maintainer.
| 
| > Or, if memcpy() is defined in a header file and uses casts to optimise
| > inlined copies of fixed sizes it might be that the pointer-aliasing
| > rules mean that the actual structure might not have been written.
| 
| The copy is of the full size of the relevant structure, but through a
| (void*) pointer - sounds more like a gcc bug to me.
| 
| > A possible solution to that is an asm statement with a "memory"
| > constraint for the buffer areas either side of the actual copy.
| 
| Since the warning is a false positive, I think we should not tamper with
| the source too much, besides shutting up the warning via a pragma or whatever
| (should work with push/pop, but even that is ugly).
| 
| Christos?

I don't know which memcpy is causing it in readelf.c... I'll try it.

christos