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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 10:05:51 +0000 |
commit | 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch) | |
tree | a94efe259b9009378be6d90eb30d2b019d95c194 /scripts/coccinelle/misc/returnvar.cocci | |
parent | Initial commit. (diff) | |
download | linux-430c2fc249ea5c0536abd21c23382884005c9093.tar.xz linux-430c2fc249ea5c0536abd21c23382884005c9093.zip |
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'scripts/coccinelle/misc/returnvar.cocci')
-rw-r--r-- | scripts/coccinelle/misc/returnvar.cocci | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/scripts/coccinelle/misc/returnvar.cocci b/scripts/coccinelle/misc/returnvar.cocci new file mode 100644 index 000000000..ce0d9eebc --- /dev/null +++ b/scripts/coccinelle/misc/returnvar.cocci @@ -0,0 +1,67 @@ +// SPDX-License-Identifier: GPL-2.0-only +/// +/// Remove unneeded variable used to store return value. +/// +// Confidence: Moderate +// Copyright: (C) 2012 Peter Senna Tschudin, INRIA/LIP6. +// URL: http://coccinelle.lip6.fr/ +// Comments: Comments on code can be deleted if near code that is removed. +// "when strict" can be removed to get more hits, but adds false +// positives +// Options: --no-includes --include-headers + +virtual patch +virtual report +virtual context +virtual org + +@depends on patch@ +type T; +constant C; +identifier ret; +@@ +- T ret = C; +... when != ret + when strict +return +- ret ++ C +; + +@depends on context@ +type T; +constant C; +identifier ret; +@@ +* T ret = C; +... when != ret + when strict +* return ret; + +@r1 depends on report || org@ +type T; +constant C; +identifier ret; +position p1, p2; +@@ +T ret@p1 = C; +... when != ret + when strict +return ret@p2; + +@script:python depends on report@ +p1 << r1.p1; +p2 << r1.p2; +C << r1.C; +ret << r1.ret; +@@ +coccilib.report.print_report(p1[0], "Unneeded variable: \"" + ret + "\". Return \"" + C + "\" on line " + p2[0].line) + +@script:python depends on org@ +p1 << r1.p1; +p2 << r1.p2; +C << r1.C; +ret << r1.ret; +@@ +cocci.print_main("unneeded \"" + ret + "\" variable", p1) +cocci.print_sec("return " + C + " here", p2) |