Re: grow_heap: static linking warns about madvise() not implemented

[Samuel Thibault <samuel dot thibault at ens-lyon dot org>]

Mike Frysinger, le Sat 21 Jul 2007 19:55:01 -0400, a écrit :
> On Saturday 21 July 2007, Samuel Thibault wrote:
> > When statically linking on a system on which madvise() wasn't ported,
> > the linker complains:
> >
> > /bin/../lib/gcc/i486-gnu/4.0.4/../../../libcrt.a(malloc.o): In function
> > `grow_heap': (.text+0x3t4): warning: warning: madvise is not implemented
> > and will always fail
> >
> > should there really be such linker warning for madvise() whose failure
> > doesn't have any semantic consequences, just no boost of performance?
> 
> of course.  you tried to use a func that is stubbed out, so you get a warning 
> about it.

I didn't try. I just linked a program statically. The call to madvise
comes from libc itself, in libcrt.a's grow_heap() function.

Samuel