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comedi: Annotate struct comedi_lrange with __counted_by

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Prepare for the coming implementation by GCC and Clang of the __counted_by
attribute. Flexible array members annotated with __counted_by can have
their accesses bounds-checked at run-time checking via CONFIG_UBSAN_BOUNDS
(for array indexing) and CONFIG_FORTIFY_SOURCE (for strcpy/memcpy-family
functions).

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Link: https://lore.kernel.org/r/5c3b7459b820e22e2ac6ce892d4aadcc119cc919.1696065263.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Christophe JAILLET 2023-09-30 11:14:47 +02:00 • committed by Greg Kroah-Hartman
parent e6c1ccaa71
commit 77f048bcbf
1 changed files with 1 additions and 1 deletions
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2
include/linux/comedi/comedidev.h
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@ -633,7 +633,7 @@ extern const struct comedi_lrange range_unknown;
*/
struct comedi_lrange {
int length;
struct comedi_krange range[];
struct comedi_krange range[] __counted_by(length);
};
/**