re PR c/41182 (Revision 145254 caused ICE: tree check: expected integer_cst,...

re PR c/41182 (Revision 145254 caused ICE: tree check: expected integer_cst, have nop_expr in tree_int_cst_lt, at tree.c:5259)

	PR c/41182
	* c-common.c (c_fully_fold_internal): Strip nops from the result
	of recursive calls to c_fully_fold_internal.
	(c_wrap_maybe_const): New.
	(c_save_expr): Use c_wrap_maybe_const.
	* c-common.h (c_wrap_maybe_const): Declare.
	* c-typeck.c (build_conditional_expr, c_finish_stmt_expr,
	build_binary_op): Use c_wrap_maybe_const.

testsuite:
	* gcc.c-torture/compile/pr41182-1.c: New.

From-SVN: r152548