Dear Szabolcs, > i suspect rerunning the test with > > ./testrun.sh io/tst-closefrom 93>&- 94>&- > > would pass for you. indeed: zimmerma@tomate:/localdisk/zimmerma/glibc-2.34/build$ ./testrun.sh io/tst-closefrom 93>&- 94>&- zimmerma@tomate:/localdisk/zimmerma/glibc-2.34/build$ echo $? 0 Paul