re PR fortran/54298 (Add warning when doing equal/nonequal floating-point comparisons)

re PR fortran/54298 (Add warning when doing equal/nonequal floating-point comparisons)

2012-08-19  Thomas König  <tkoenig@gcc.gnu.org>

	PR fortran/54298
	* gfortran.h (struct gfc_option_t): Add warn_compare_reals.
	* lang.opt:  Add Wcompare-reals.
	* invoke.texi:  Document -Wcompare-reals.
	* resolve.c (resolve_operator):  If -Wcompare-reals is in effect,
	warn about equality/inequality comparisions for REAL and COMPLEX.
	* options.c (gfc_init_options):  Set warn_compare_reals.
	(set_Wall):  Include warn_compare_reals in Wall.
	(gfc_handle_option):  Handle Wcompare_reals.

2012-08-19  Thomas König  <tkoenig@gcc.gnu.org>

	PR fortran/54298
	* gfortran.dg/real_compare_1.f90:  New test case.
	* gfortran.dg/bessel_5.f90  Add -Wno-compare-reals to options.

From-SVN: r190516