[Bug math/19590] Fail to build shared objects that use libmvec.so functions.

["andrew.n.senkevich at gmail dot com" <sourceware-bugzilla at sourceware dot org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=19590

--- Comment #6 from Andrew Senkevich <andrew.n.senkevich at gmail dot com> ---
(In reply to H.J. Lu from comment #3)
> (In reply to Andrew Senkevich from comment #2)
> > Test case is:
> > 
> > -bash-4.2$ cat ./log.c
> > #include <math.h>
> > 
> > int N = 3000;
> > double a[3000];
> > double b[3000];
> > 
> > int test ()
> > {
> >   int i = 0;
> > 
> > #pragma omp simd
> >   for (i = 0; i < N; i++)
> >   {
> >     b[i] = log(a[i]);
> >   }
> > 
> >   return 0;
> > }
> > 
> > gcc ./log.c -O3 -fopenmp -ffast-math -I/INSTALL_PATH/include -fPIC -shared
> > -o ./log.so -lm -L/INSTALL_PATH/lib/
> > will fail w/o fix.
> > Also with -mavx, -mavx2, -mavx512f for other vector variants.
> 
> Does it compile with all versions of GCC supported for glibc build?
> Does it fail with all of them?

Fail with all GCC versions >= 4.9

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