re PR c/59304 (#pragma diagnostic pop after warning fails for options unspecified in the command-line and disabled by default)

gcc/ChangeLog:

2014-08-20  Manuel López-Ibáñez  <manu@gcc.gnu.org>

	PR c/59304
	* opts-common.c (set_option): Call diagnostic_classify_diagnostic
	before setting the option.
	* diagnostic.c (diagnostic_classify_diagnostic): Record
	command-line status.

gcc/testsuite/ChangeLog:

2014-08-20  Manuel López-Ibáñez  <manu@gcc.gnu.org>

	PR c/59304
	* gcc.dg/pr59304.c: New test.

From-SVN: r214221