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scripts/coccinelle: update for compatability with Coccinelle 0.2.4

For doubleinit.cocci, Coccinelle 0.2.4 requires a comma after ... in a
field list.  Coccinelle also now behaves gracefully when a definition is
provided for a virtual that doesn't exist, so there is no need for the
semantic patch code to check for this case.

Updated the documentation to reflect the fact that the best results will
now be obtained with Coccinelle version 0.2.4 or later.

Signed-off-by: Julia Lawall <julia@diku.dk>
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JuliaLawall authored and michal42 committed Nov 24, 2010
1 parent 0a18a93 commit a1087ef6abedf0bfd60e5e3fddf33192cb2c1325
Showing with 21 additions and 28 deletions.
  1. +4 −0 Documentation/coccinelle.txt
  2. +3 −3 scripts/coccinelle/misc/doubleinit.cocci
  3. +14 −25 scripts/coccinelle/null/deref_null.cocci
@@ -36,6 +36,10 @@ as a regular user, and install it with
sudo make install
+The semantic patches in the kernel will work best with Coccinelle version
+0.2.4 or later. Using earlier versions may incur some parse errors in the
+semantic patch code, but any results that are obtained should still be
+correct.
Using Coccinelle on the Linux kernel
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
@@ -7,7 +7,7 @@
// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2.
// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2.
// URL: http://coccinelle.lip6.fr/
-// Comments:
+// Comments: requires at least Coccinelle 0.2.4, lex or parse error otherwise
// Options: -no_includes -include_headers
virtual org
@@ -19,15 +19,15 @@ position p0,p;
expression E;
@@
-struct I s =@p0 { ... .fld@p = E, ...};
+struct I s =@p0 { ..., .fld@p = E, ...};
@s@
identifier I, s, r.fld;
position r.p0,p;
expression E;
@@
-struct I s =@p0 { ... .fld@p = E, ...};
+struct I s =@p0 { ..., .fld@p = E, ...};
@script:python depends on org@
p0 << r.p0;
@@ -11,21 +11,10 @@
// Options:
virtual context
-virtual patch
virtual org
virtual report
-@initialize:python depends on !context && patch && !org && !report@
-
-import sys
-print >> sys.stderr, "This semantic patch does not support the 'patch' mode."
-
-@depends on patch@
-@@
-
-this_rule_should_never_matches();
-
-@ifm depends on !patch@
+@ifm@
expression *E;
statement S1,S2;
position p1;
@@ -35,15 +24,15 @@ if@p1 ((E == NULL && ...) || ...) S1 else S2
// The following two rules are separate, because both can match a single
// expression in different ways
-@pr1 depends on !patch expression@
+@pr1 expression@
expression *ifm.E;
identifier f;
position p1;
@@
(E != NULL && ...) ? <+...E->f@p1...+> : ...
-@pr2 depends on !patch expression@
+@pr2 expression@
expression *ifm.E;
identifier f;
position p2;
@@ -59,7 +48,7 @@ position p2;
// For org and report modes
-@r depends on !context && !patch && (org || report) exists@
+@r depends on !context && (org || report) exists@
expression subE <= ifm.E;
expression *ifm.E;
expression E1,E2;
@@ -99,7 +88,7 @@ if@p1 ((E == NULL && ...) || ...)
}
else S3
-@script:python depends on !context && !patch && !org && report@
+@script:python depends on !context && !org && report@
p << r.p;
p1 << ifm.p1;
x << ifm.E;
@@ -109,7 +98,7 @@ msg="ERROR: %s is NULL but dereferenced." % (x)
coccilib.report.print_report(p[0], msg)
cocci.include_match(False)
-@script:python depends on !context && !patch && org && !report@
+@script:python depends on !context && org && !report@
p << r.p;
p1 << ifm.p1;
x << ifm.E;
@@ -120,7 +109,7 @@ msg_safe=msg.replace("[","@(").replace("]",")")
cocci.print_main(msg_safe,p)
cocci.include_match(False)
-@s depends on !context && !patch && (org || report) exists@
+@s depends on !context && (org || report) exists@
expression subE <= ifm.E;
expression *ifm.E;
expression E1,E2;
@@ -159,7 +148,7 @@ if@p1 ((E == NULL && ...) || ...)
}
else S3
-@script:python depends on !context && !patch && !org && report@
+@script:python depends on !context && !org && report@
p << s.p;
p1 << ifm.p1;
x << ifm.E;
@@ -168,7 +157,7 @@ x << ifm.E;
msg="ERROR: %s is NULL but dereferenced." % (x)
coccilib.report.print_report(p[0], msg)
-@script:python depends on !context && !patch && org && !report@
+@script:python depends on !context && org && !report@
p << s.p;
p1 << ifm.p1;
x << ifm.E;
@@ -180,7 +169,7 @@ cocci.print_main(msg_safe,p)
// For context mode
-@depends on context && !patch && !org && !report exists@
+@depends on context && !org && !report exists@
expression subE <= ifm.E;
expression *ifm.E;
expression E1,E2;
@@ -223,23 +212,23 @@ else S3
// The following three rules are duplicates of ifm, pr1 and pr2 respectively.
// It is need because the previous rule as already made a "change".
-@ifm1 depends on !patch@
+@ifm1@
expression *E;
statement S1,S2;
position p1;
@@
if@p1 ((E == NULL && ...) || ...) S1 else S2
-@pr11 depends on !patch expression@
+@pr11 expression@
expression *ifm1.E;
identifier f;
position p1;
@@
(E != NULL && ...) ? <+...E->f@p1...+> : ...
-@pr12 depends on !patch expression@
+@pr12 expression@
expression *ifm1.E;
identifier f;
position p2;
@@ -253,7 +242,7 @@ position p2;
sizeof(<+...E->f@p2...+>)
)
-@depends on context && !patch && !org && !report exists@
+@depends on context && !org && !report exists@
expression subE <= ifm1.E;
expression *ifm1.E;
expression E1,E2;

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