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android/scripts/coccinelle/misc/cstptr.cocci
T
threeeye bc1d038eac REVVL 6 Pro kernel bring-up: full working tree snapshot (2026-09-12)
Squashed backup commit (no shallow-clone history issues) of
xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream
commit 9eece662e) plus all fixes applied to get everpal_defconfig building
clean against a modern (GCC 15.2.0) toolchain -- see the previous commit
message on the lineage-23.2 branch (also in this repo history is not
available here since this is a squashed snapshot; full incremental history
lives in the local DL380 checkout and the upstream GitHub remote).

Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
2026-09-12 13:36:46 +00:00

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/// PTR_ERR should be applied before its argument is reassigned, typically
/// to NULL
///
// Confidence: High
// Copyright: (C) 2012 Julia Lawall, INRIA/LIP6. GPLv2.
// Copyright: (C) 2012 Gilles Muller, INRIA/LiP6. GPLv2.
// URL: http://coccinelle.lip6.fr/
// Comments:
// Options: --no-includes --include-headers
virtual org
virtual report
virtual context
@r exists@
expression e,e1;
constant c;
position p1,p2;
@@
*e@p1 = c
... when != e = e1
when != &e
when != true IS_ERR(e)
*PTR_ERR@p2(e)
@script:python depends on org@
p1 << r.p1;
p2 << r.p2;
@@
cocci.print_main("PTR_ERR",p2)
cocci.print_secs("assignment",p1)
@script:python depends on report@
p1 << r.p1;
p2 << r.p2;
@@
msg = "ERROR: PTR_ERR applied after initialization to constant on line %s" % (p1[0].line)
coccilib.report.print_report(p2[0],msg)