[Monotone-debian] Bug#537919: Cause diagnosed - bug is in libc

[Zack Weinberg]

block 537919 by 557248
thanks

I installed Debian kFreeBSD in a virtual machine and was able to debug
the problem (with some difficulty - programs crash with SIGILL on the
first instruction of main if run under gdb, strace hasn't been ported,
ktrace exists but kdump is missing).  It's a bug in the C library.
Monotone expects the remove() function to delete both files and
directories (POSIX specifies that this should work).  Under kFreeBSD,
however, remove() fails with EPERM if applied to a directory.  I
suspect it is calling unlink() and expecting that to return EISDIR
rather than EPERM when applied to a directory.

I filed bug 557248 on libc0.1.

zw