In egcs-1.1.2-pre2-1.1.2-pre3.diff.gz egcs-1.1.2-pre3/libstdc++/configure.in is updated but there is no egcs-1.1.2-pre3/libstdc++/configure . Similarly egcs-19990307/libstdc++/configure doesn't exist but libstdc++/configure.in was updated in 19990117 . This doesn't seem to affect snapshot builds