re PR c/66322 (Linus Torvalds: -Wswitch-bool produces dubious warnings, fails to notice really bad things)

	PR c/66322
	* c-common.c (check_case_bounds): Add bool * parameter.  Set
	OUTSIDE_RANGE_P.
	(c_add_case_label): Add bool * parameter.  Pass it down to
	check_case_bounds.
	(c_do_switch_warnings): Add bool parameters.  Implement -Wswitch-bool
	warning here.
	* c-common.h (c_add_case_label, c_do_switch_warnings): Update
	declarations.

	* c-typeck.c (struct c_switch): Add BOOL_COND_P and OUTSIDE_RANGE_P.
	(c_start_case): Set BOOL_COND_P and OUTSIDE_RANGE_P.  Don't warn
	about -Wswitch-bool here.
	(do_case): Update c_add_case_label call.
	(c_finish_case): Update c_do_switch_warnings call.

	* decl.c (struct cp_switch): Add OUTSIDE_RANGE_P.
	(push_switch): Set OUTSIDE_RANGE_P.
	(pop_switch): Update c_do_switch_warnings call.
	(finish_case_label): Update c_add_case_label call.
	* semantics.c (finish_switch_cond): Don't warn about -Wswitch-bool
	here.

	* function.c (stack_protect_epilogue): Remove a cast to int.
	* doc/invoke.texi: Update -Wswitch-bool description.

	* c-c++-common/pr60439.c: Add dg-prune-output and add switch cases.
	* c-c++-common/pr66322.c: New test.
	* g++.dg/eh/scope1.C: Remove dg-warning.

From-SVN: r225116