PR c++/45437
gcc/
	* gimplify.c (goa_stabilize_expr): Handle RHS preevaluation in
	compound assignment.
gcc/c-family/
	* c-omp.c (check_omp_for_incr_expr): Handle preevaluation.
gcc/cp/
	* typeck.c (cp_build_modify_expr): Preevaluate RHS.

From-SVN: r176072