Re: [PATCH] fat: Use pointer to d_name[0] in put_user() for compat case

From: Andreas Schwab
Date: Mon Feb 14 2022 - 04:27:39 EST


On Feb 14 2022, David Laight wrote:

> The 'bug' is caused by put_user() trying to do:
> __typeof__(ptr) __ptr = ptr;
> where __typeof__ is returning char[n] not char *.
>
> I've tried a few things but can't get __typeof__ to
> generate a suitable type for both a simple type and array.

Does it work to use __typeof__(&*(ptr))?

--
Andreas Schwab, schwab@xxxxxxxxxxxxxx
GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510 2552 DF73 E780 A9DA AEC1
"And now for something completely different."