The library routines for EXPONENT return a INTEGER(4) value.
When -fdefault-integer-8 is used, the result needs to be
convert to the correct type.  The attach patch, regression
tested on amd64-*-freebsd, does the trick.

OK for trunk?

2007-07-31  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/32942
	* gfortran.dg/exponent_2.f90: New test.

2007-07-31  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/32942
	*trans-intrinsic.c (gfc_conv_intrinsic_exponent): Convert to correct
	type.

-- 
Steve