Re: [PATCH for-4.2] hw/i386: Fix compiler warning when CONFIG_IDE_ISA is disabled

[Peter Maydell <peter.maydell@linaro.org>]

On Fri, 15 Nov 2019 at 15:10, Thomas Huth <thuth@redhat.com> wrote:
>
> When CONFIG_IDE_ISA is disabled, compilation currently fails:
>
>  hw/i386/pc_piix.c: In function ‘pc_init1’:
>  hw/i386/pc_piix.c:81:9: error: unused variable ‘i’ [-Werror=unused-variable]
>
> Move the variable declaration to the right code block to avoid
> this problem.
>
> Fixes: 4501d317b50e ("hw/i386/pc: Extract pc_i8259_create()")
> Signed-off-by: Thomas Huth <thuth@redhat.com>
> ---
>  hw/i386/pc_piix.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
>
> diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
> index 2aefa3b8df..d187db761c 100644
> --- a/hw/i386/pc_piix.c
> +++ b/hw/i386/pc_piix.c
> @@ -78,7 +78,6 @@ static void pc_init1(MachineState *machine,
>      X86MachineState *x86ms = X86_MACHINE(machine);
>      MemoryRegion *system_memory = get_system_memory();
>      MemoryRegion *system_io = get_system_io();
> -    int i;
>      PCIBus *pci_bus;
>      ISABus *isa_bus;
>      PCII440FXState *i440fx_state;
> @@ -253,7 +252,7 @@ static void pc_init1(MachineState *machine,
>      }
>  #ifdef CONFIG_IDE_ISA
>  else {
> -        for(i = 0; i < MAX_IDE_BUS; i++) {
> +        for (int i = 0; i < MAX_IDE_BUS; i++) {
>              ISADevice *dev;
>              char busname[] = "ide.0";
>              dev = isa_ide_init(isa_bus, ide_iobase[i], ide_iobase2[i],

Don't put variable declarations inside 'for' statements,
please. They should go at the start of a {} block.

thanks
-- PMM