==== run-regress-sleep_test ====
cc -O2 -pipe   -MD -MP  -I/home/src/regress/lib/libc/sleep/../../../../lib/libc -c /home/src/regress/lib/libc/sleep/sleep_test.c
/home/src/regress/lib/libc/sleep/sleep_test.c:58:9: warning: address of stack memory associated with local variable 'buf' returned [-Wreturn-stack-address]
        return buf;
               ^~~
1 warning generated.
cc   -o sleep_test sleep_test.o 
[ x$(./sleep_test 1) = x0 ] || exit 1
file=$(mktemp -t sleep.XXXXXXXXXX); ./sleep_test 4 >$file & pid=$!;  sleep 1; kill $pid; sleep 1; v=$(cat $file); rm -f $file;  { [ $v -gt 0 ] && [ $v -lt 4 ] ; } || exit 2