Re: [PATCH v2 20/22] sysemu/device_tree: Clean up local variable shadowing

[Markus Armbruster <armbru@redhat.com>]

Philippe Mathieu-Daudé <philmd@linaro.org> writes:

> Fix:
>
>   hw/mips/boston.c:472:5: error: declaration shadows a local variable [-Werror,-Wshadow]
>     qemu_fdt_setprop_cells(fdt, name, "reg", reg_base, reg_size);
>     ^
>   include/sysemu/device_tree.h:129:13: note: expanded from macro 'qemu_fdt_setprop_cells'
>         int i;
>             ^
>   hw/mips/boston.c:461:9: note: previous declaration is here
>     int i;
>         ^
>
> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
> ---
>  include/sysemu/device_tree.h | 6 ++----
>  1 file changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/include/sysemu/device_tree.h b/include/sysemu/device_tree.h
> index ca5339beae..8eab395934 100644
> --- a/include/sysemu/device_tree.h
> +++ b/include/sysemu/device_tree.h
> @@ -126,10 +126,8 @@ int qemu_fdt_add_path(void *fdt, const char *path);
>  #define qemu_fdt_setprop_cells(fdt, node_path, property, ...)                 \
>      do {                                                                      \
>          uint32_t qdt_tmp[] = { __VA_ARGS__ };                                 \
> -        int i;                                                                \
> -                                                                              \
> -        for (i = 0; i < ARRAY_SIZE(qdt_tmp); i++) {                           \
> -            qdt_tmp[i] = cpu_to_be32(qdt_tmp[i]);                             \
> +        for (unsigned i_ = 0; i_ < ARRAY_SIZE(qdt_tmp); i_++) {               \
> +            qdt_tmp[i_] = cpu_to_be32(qdt_tmp[i_]);                           \
>          }                                                                     \
>          qemu_fdt_setprop(fdt, node_path, property, qdt_tmp,                   \
>                           sizeof(qdt_tmp));                                    \

You don't just rename the variable, but also adjust its type.  When
we're dealing with at a huge changeset like the tree-wide -Wshadow=local
cleanup, I prefer to keep changes minimal to ease review as much as
possible.  But it's sunk cost now, so

Reviewed-by: Markus Armbruster <armbru@redhat.com>