Actually, Ludo's patch works, but we should not remove the workaround for isDirectory. With the patch to isFile and the workaround in isDirectory, I can build up to (but not including) icedtea@1. Ludo's patch is nicer than using -O0 :) Le 2 septembre 2021 10:15:41 GMT-04:00, Maxime Devos a écrit : >Ludovic Courtès schreef op wo 01-09-2021 om 15:53 [+0200]: >> Hmm -O0 is brute-force. > >What about only using "-O0" for whatever C file is responsible for >Java_java_io_VMFile_isFile? > >Greetings, >Maxime