Re: Build regressions/improvements in v6.2-rc4

[Guenter Roeck]

On Mon, Jan 16, 2023 at 01:29:24PM +0100, Geert Uytterhoeven wrote:
> Below is the list of build error/warning regressions/improvements in
> v6.2-rc4[1] compared to v6.1[2].
> 
...
>   + /kisskb/src/drivers/media/platform/nxp/imx-jpeg/mxc-jpeg.c: error: array subscript 2 is above array bounds of 'u32[2]' {aka 'unsigned int[2]'} [-Werror=array-bounds]:  => 641:28
>   + /kisskb/src/drivers/media/platform/nxp/imx-jpeg/mxc-jpeg.c: error: array subscript 3 is above array bounds of 'u32[2]' {aka 'unsigned int[2]'} [-Werror=array-bounds]:  => 641:28

Unless I am missing something, the code is

        for (i = fmt->mem_planes; i < fmt->comp_planes; i++)
                size += q_data->sizeimage[i];

and both mem_planes and comp_planes are <= 2. How does the compiler
calculate an error subscript of 2/3 ?

Guenter