* localtime.cc (increment_overflow): Mark as non-inline to prevent compiler

from complaining about the very thing we're trying to test.
* ntea.cc (read_ea): Reorganize to avoid a new compiler warning/error.
* sched.cc (sched_rr_get_interval): Ditto.
* select.cc (peek_serial): Ditto.
* libc/rexec.cc (ruserpass): Ditto.
* posix_ipc.cc (ipc_names): Make static to avoid a compiler warning
(and it's the right thing to do anyway).

winsup/cygwin/localtime.cc

@@ -1788,7 +1788,8 @@ ctime_r(const time_t *timep, char *buf)
 ** Simplified normalize logic courtesy Paul Eggert (eggert@twinsun.com).
 */
 
-static int
+/* Mark as noinline to prevent a compiler warning. */
+static int __attribute__((noinline))
 increment_overflow(int *number, int delta)
 {
 	int	number0;