PR c++/38348
	* c-omp.c (c_finish_omp_for): Only transform pointer
	++ or -- into MODIFY_EXPR if second argument is non-NULL.

	* g++.dg/gomp/for-19.C: New test.

	* testsuite/libgomp.c++/for-6.C: New test.

From-SVN: r142318