### Description - Umask03 test fails at `if (low9mode != (~mskval & 0777))` [line no:102](https://github.com/Windows-on-ARM-Experiments/newlib-cygwin/blob/7a762b853e1a994616adab1e499c866629be0e74/winsup/testsuite/winsup.api/ltp/umask03.c#L102). - The condition for expected permission fails so the test fails. ### Acceptance criteria - `winsup.api/ltp/umask03.c` test passed in AArch64 Cygwin build.