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// SPDX-License-Identifier: GPL-2.0-only
///
/// Zero-length and one-element arrays are deprecated, see
/// Documentation/process/deprecated.rst
/// Flexible-array members should be used instead.
///
//
// Confidence: High
// Copyright: (C) 2020 Denis Efremov ISPRAS.
// Comments:
// Options: --no-includes --include-headers
virtual context
virtual report
virtual org
virtual patch
@initialize:python@
@@
def relevant(positions):
for p in positions:
if "uapi" in p.file:
return False
return True
@r depends on !patch@
identifier name, array;
type T;
position p : script:python() { relevant(p) };
@@
(
struct name {
...
* T array@p[\(0\|1\)];
};
|
struct {
...
* T array@p[\(0\|1\)];
};
|
union name {
...
* T array@p[\(0\|1\)];
};
|
union {
...
* T array@p[\(0\|1\)];
};
)
@only_field depends on patch@
identifier name, array;
type T;
position q;
@@
(
struct name {@q
T array[0];
};
|
struct {@q
T array[0];
};
)
@depends on patch@
identifier name, array;
type T;
position p : script:python() { relevant(p) };
// position @q with rule "only_field" simplifies
// handling of bitfields, arrays, etc.
position q != only_field.q;
@@
(
struct name {@q
...
T array@p[
- 0
];
};
|
struct {@q
...
T array@p[
- 0
];
};
)
@script: python depends on report@
p << r.p;
@@
msg = "WARNING use flexible-array member instead (https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-and-one-element-arrays)"
coccilib.report.print_report(p[0], msg)
@script: python depends on org@
p << r.p;
@@
msg = "WARNING use flexible-array member instead (https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-and-one-element-arrays)"
coccilib.org.print_todo(p[0], msg)