re PR c/47963 (ICE: tree check: expected tree that contains 'decl common' structure, have 'integer_cst' in is_global_var, at tree-flow-inline.h:599 on invalid code with -fopenmp)

	PR c/47963
	* gimplify.c (omp_add_variable): Only call omp_notice_variable
	on TYPE_SIZE_UNIT if it is a DECL.

	* gcc.dg/gomp/pr47963.c: New test.
	* g++.dg/gomp/pr47963.C: New test.

From-SVN: r170655