re PR c/37186 (-Wno-error=pointer-sign does not work)

2008-08-27  Manuel Lopez-Ibanez  <manu@gcc.gnu.org>

	PR c/37186
	* c-typeck.c (WARN_FOR_ASSIGNMENT): Add OPT parameter.
	(convert_for_assignment): Pass corrent OPT_W* parameter to
	WARN_FOR_ASSIGNMENT.
testsuite/
	* gcc.dg/pr37186.c: New.

From-SVN: r139680