On Sat, 16 May 2020, Chuhong Yuan wrote:
> Hi all,
> I want to write a script to match function calls in macros
> but I don't know how to do that.
> Here is an example:
>
> #define __INIT_WORK(_work, _func, _onstack) \
> do { \
> static struct lock_class_key __key; \
> \
> __init_work((_work), _onstack); \
> (_work)->data = (atomic_long_t) WORK_DATA_INIT(); \
> lockdep_init_map(&(_work)->lockdep_map,
> "(work_completion)"#_work, &__key, 0); \
> INIT_LIST_HEAD(&(_work)->entry); \
> (_work)->func = (_func); \
> } while (0)
>
> In this example, I want to match function calls
> like __init_work() and lockdep_init_map() in this macro.
> So how to implement this by Coccinelle?
I would suggest to take your file and run spatch --parse-c on the file.
If you find BAD or bad in front of the lines of this code then the problem
is that the code is not being parsed. I suspect that the # is the
problem.
Normally, Coccinelle will match code inside of macro definitions, but only
if it is able to parse the macro definition, and the ability to parse
macro definitions is somewhat limited.
julia
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