Re: [PATCH v2] util/qemu-option: Document the get_opt_value() function

[Daniel P . Berrangé]

On Mon, Jun 29, 2020 at 09:08:58AM +0200, Philippe Mathieu-Daudé wrote:
> Coverity noticed commit 950c4e6c94 introduced a dereference before
> null check in get_opt_value (CID1391003):
> 
>   In get_opt_value: All paths that lead to this null pointer
>   comparison already dereference the pointer earlier (CWE-476)
> 
> We fixed this in commit 6e3ad3f0e31, but relaxed the check in commit
> 0c2f6e7ee99 because "No callers of get_opt_value() pass in a NULL
> for the 'value' parameter".
> 
> Since this function is publicly exposed, it risks new users to do
> the same error again. Avoid that documenting the 'value' argument
> must not be NULL.
> 
> Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
> ---
> v2: Drop confuse comment (Damien Hedde)
> ---
>  include/qemu/option.h | 13 +++++++++++++
>  1 file changed, 13 insertions(+)

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>


Regards,
Daniel
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