PR c++/88976

	PR c++/88976
	* c-typeck.c (c_finish_omp_cancel): Diagnose more than one if
	on #pragma omp cancel with different modifiers.

	* semantics.c (finish_omp_cancel): Diagnose more than one if
	on #pragma omp cancel with different modifiers.  Use
	maybe_convert_cond when not in template or build_x_binary_op
	otherwise.

	* c-c++-common/gomp/cancel-2.c: New test.
	* gcc.dg/gomp/cancel-1.c: New test.
	* g++.dg/gomp/cancel-1.C: New test.
	* g++.dg/gomp/cancel-2.C: New test.
	* g++.dg/gomp/cancel-3.C: New test.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@268245 138bc75d-0d04-0410-961f-82ee72b054a4