ld version 2.16.1 crashes due to a null pointer when trying to report a warning
related to a gcc object file compiled with -fopenmp.  The offending line in
2.16.1 is bfd.c:481, where abfd is NULL:

if (p[1] == 'B')
  {
    bfd *abfd = va_arg (ap, bfd *);
    if (abfd->my_archive)
      snprintf (bufp, avail, "%s(%s)",
                abfd->my_archive->filename, abfd->filename);

This bug can be reproduced using as follows, using the 2 files ctp.c and
csimple.c, and gcc 4.2.0 20060601.  (The ld -r line is necessary here.)

(776)% cat ctp.c
float matrix;

void ctp()
{
#pragma omp threadprivate(matrix)
  matrix = 0.0;
}
(777)% cat csimple.c 
void ctp();

int main()
{
  ctp();
  return 0;
}
(778)% gcc -fopenmp -c ctp.c
(779)% ld -r ctp.o -o ctpr.o
(780)% gcc -fopenmp csimple.c ctp.o
(781)% gcc -fopenmp csimple.c ctpr.o
collect2: ld terminated with signal 11 [Segmentation fault], core dumped
ld: (782)% 

I modified bfd.c so I could get the error message that should have been printed,
which was:

(792)% gcc -fopenmp csimple.c ctpr.o
ld: Warning: alignment 1 of symbol `matrix' in
abfd->my_archive->filename(abfd->filename) is smaller than 4 in ctpr.o