diff options
author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/scripts/coccinelle/iterators/itnull.cocci | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/scripts/coccinelle/iterators/itnull.cocci')
-rw-r--r-- | kernel/scripts/coccinelle/iterators/itnull.cocci | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/kernel/scripts/coccinelle/iterators/itnull.cocci b/kernel/scripts/coccinelle/iterators/itnull.cocci new file mode 100644 index 000000000..f58732b56 --- /dev/null +++ b/kernel/scripts/coccinelle/iterators/itnull.cocci @@ -0,0 +1,94 @@ +/// Many iterators have the property that the first argument is always bound +/// to a real list element, never NULL. +//# False positives arise for some iterators that do not have this property, +//# or in cases when the loop cursor is reassigned. The latter should only +//# happen when the matched code is on the way to a loop exit (break, goto, +//# or return). +/// +// Confidence: Moderate +// Copyright: (C) 2010-2012 Nicolas Palix. GPLv2. +// Copyright: (C) 2010-2012 Julia Lawall, INRIA/LIP6. GPLv2. +// Copyright: (C) 2010-2012 Gilles Muller, INRIA/LiP6. GPLv2. +// URL: http://coccinelle.lip6.fr/ +// Comments: +// Options: --no-includes --include-headers + +virtual patch +virtual context +virtual org +virtual report + +@depends on patch@ +iterator I; +expression x,E,E1,E2; +statement S,S1,S2; +@@ + +I(x,...) { <... +( +- if (x == NULL && ...) S +| +- if (x != NULL || ...) + S +| +- (x == NULL) || + E +| +- (x != NULL) && + E +| +- (x == NULL && ...) ? E1 : + E2 +| +- (x != NULL || ...) ? + E1 +- : E2 +| +- if (x == NULL && ...) S1 else + S2 +| +- if (x != NULL || ...) + S1 +- else S2 +| ++ BAD( + x == NULL ++ ) +| ++ BAD( + x != NULL ++ ) +) + ...> } + +@r depends on !patch exists@ +iterator I; +expression x,E; +position p1,p2; +@@ + +*I@p1(x,...) +{ ... when != x = E +( +* x@p2 == NULL +| +* x@p2 != NULL +) + ... when any +} + +@script:python depends on org@ +p1 << r.p1; +p2 << r.p2; +@@ + +cocci.print_main("iterator-bound variable",p1) +cocci.print_secs("useless NULL test",p2) + +@script:python depends on report@ +p1 << r.p1; +p2 << r.p2; +@@ + +msg = "ERROR: iterator variable bound on line %s cannot be NULL" % (p1[0].line) +coccilib.report.print_report(p2[0], msg) |