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lib/util/idtree.c:84 runtime error: left shift of 1 by 31 places cannot
be represented in type 'int'
Signed-off-by: Andreas Schneider <asn@samba.org>
Reviewed-by: Gary Lockyer <gary@catalyst.net.nz>
Using negative values on the left-side of a left-shift operation is an
Undefined Behaviour in C.
Signed-off-by: Aurelien Aptel <aaptel@suse.com>
Reviewed-by: Jeremy Allison <jra@samba.org>
Reviewed-by: Ira Cooper <ira@samba.org>
config.h may have some flags which affect glibc behavior, e.g.
_FILE_OFFSET_BITS=64. To make sure these flags have the desired
effect, config.h must be included before any glibc header files.
This commit does not fix a specific known bug. It changes the code to
comply with coding conventions.
Signed-off-by: Uri Simchoni <urisimchoni@gmail.com>
Reviewed-by: Jeremy Allison <jra@samba.org>
Reviewed-by: "Stefan Metzmacher" <metze@samba.org>
This function depends on genrand.c, which depends on lib/crypto. This
way the other IDR tree code can be used without lib/crypto.
While doing this, create idtree.h and idtree_random.h and clean up the
includes.
Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Volker Lendecke <vl@samba.org>
Chris Cowan tracked down a SEGV in sub_alloc: idp->level can actually
be equal to 7 (MAX_LEVEL) there, as it can be in sub_remove.
(We unfairly blamed a shift of a signed var for this crash in commit
2db1987f5a).
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Autobuild-User: Rusty Russell <rusty@rustcorp.com.au>
Autobuild-Date: Mon Dec 6 05:02:22 CET 2010 on sn-devel-104
Right-shifting signed integers in undefined; indeed it seems that on
AIX with their compiler, doing a 30-bit shift on (INT_MAX-200) gives
0, not 1 as we might expect.
The obvious fix is to make id and oid unsigned: l (level count) is also
logically unsigned.
(Note: Samba doesn't generally get to ids > 1 billion, but ctdb does)
Reported-by: Chris Cowan <cc@us.ibm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Autobuild-User: Rusty Russell <rusty@samba.org>
Autobuild-Date: Wed Oct 6 08:31:09 UTC 2010 on sn-devel-104
But such numbers can be forced with idr_get_new_above(), and that
reveals two bugs:
1) Crash in sub_remove() caused by pa array being too short.
2) Shift by more than 32 in _idr_find(), which is undefined, causing
the "outside the current tree" optimization to misfire and return NULL.
