Fix -Wreturn-type fallout.

Fix -Wreturn-type fallout.

2017-11-06  Martin Liska  <mliska@suse.cz>

	* c-c++-common/cilk-plus/AN/pr57541-2.c (foo1): Return a value
	for functions with non-void return type, or change type to void,
	or add -Wno-return-type for test.
	(foo2): Likewise.
	* c-c++-common/cilk-plus/AN/pr57541.c (foo): Likewise.
	(foo1): Likewise.
	* c-c++-common/cilk-plus/CK/errors.c: Likewise.
	* c-c++-common/cilk-plus/CK/pr60197.c: Likewise.
	* c-c++-common/cilk-plus/CK/spawn_in_return.c: Likewise.
	* c-c++-common/fold-masked-cmp-1.c (test_pic): Likewise.
	(test_exe): Likewise.
	* c-c++-common/fold-masked-cmp-2.c (test_exe): Likewise.
	* g++.dg/cilk-plus/AN/builtin_fn_mutating_tplt.cc (my_func): Likewise.
	* g++.dg/cilk-plus/CK/pr68997.cc (fa2): Likewise.
	* g++.dg/eh/sighandle.C (dosegv): Likewise.
	* g++.dg/ext/vector14.C (foo): Likewise.
	(main): Likewise.
	* g++.dg/graphite/pr41305.C: Likewise.
	* g++.dg/graphite/pr42930.C: Likewise.
	* g++.dg/opt/pr46640.C (struct QBasicAtomicInt): Likewise.
	(makeDir): Likewise.
	* g++.dg/other/i386-8.C (foo): Likewise.
	* g++.dg/pr45788.C: Likewise.
	* g++.dg/pr64688.C (at_c): Likewise.
	* g++.dg/pr65032.C (G::DecodeVorbis): Likewise.
	* g++.dg/pr71633.C (c3::fn2): Likewise.
	* g++.dg/stackprotectexplicit2.C (A): Likewise.
	* g++.old-deja/g++.law/weak.C (main): Likewise.
2017-11-06  Martin Liska  <mliska@suse.cz>

	* testsuite/libgomp.c++/loop-2.C: Return a value
	for functions with non-void return type, or change type to void,
	or add -Wno-return-type for test.
	* testsuite/libgomp.c++/loop-4.C: Likewise.
	* testsuite/libgomp.c++/parallel-1.C: Likewise.
	* testsuite/libgomp.c++/shared-1.C: Likewise.
	* testsuite/libgomp.c++/single-1.C: Likewise.
	* testsuite/libgomp.c++/single-2.C: Likewise.
2017-11-06  Martin Liska  <mliska@suse.cz>

	* testsuite/27_io/basic_fstream/cons/char/path.cc (main):
	  Return a value for functions with non-void return type,
	  or change type to void, or add -Wno-return-type for test.
	* testsuite/27_io/basic_ifstream/cons/char/path.cc (main):
	Likewise.
	* testsuite/27_io/basic_ofstream/open/char/path.cc (main):
	Likewise.

From-SVN: r254451