2017-01-23  Thomas Koenig  <tkoenig@netcologne.de>

	* arith.c (arith_power):  If simplifying integer power expression
	to zero, warn if -Winteger-division is given.

2017-01-23  Thomas Koenig  <tkoenig@netcologne.de>

	* gfortran.dg/integer_exponentiation_7.f90:  New test.

From-SVN: r244830