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[gold][aarch64]Give informative error message when stub-group-size is too large

Cary Coutant ccoutant@google.com
Sun Dec 14 17:00:00 GMT 2014 
Thanks!

-cary

On Sun, Dec 14, 2014 at 7:02 AM, H.J. Lu <hjl.tools@gmail.com> wrote:
> On Wed, Dec 10, 2014 at 3:11 PM, Cary Coutant <ccoutant@google.com> wrote:
>>> 2014-12-10  Jing Yu  <jingyu@google.com>
>>>
>>>       * aarch64.cc (Target_aarch64): Add new variable: stub_group_size_.
>>>       (AArch64_relocate_functions::maybe_apply_stub): Add new parameter.
>>>       Update error message.
>>>       (Target_aarch64::do_relax): Use absolute value of option
>>> stub_group_size. Replace local variable with class member
>>> stub_group_size_.
>>
>> This is OK. Thanks!
>>
>> -cary
>
> This failed on 32-bit host:
>
> /export/linux/src/binutils/binutils/gold/target-select.h:39:7:
> required from here
> /export/linux/src/binutils/binutils/gold/aarch64.cc:4208:27: error:
> format ‘%lx’ expects argument of type ‘long unsigned int’, but
> argument 2 has type ‘gold::section_size_type {aka unsigned int}’
> [-Werror=format=]
> cc1plus: all warnings being treated as errors
> make[6]: *** [aarch64.o] Error 1
>
> I am checking in this as an obvious fix.
>
> --
> H.J.
> ----
>     Cast current_group_size to unsigned long
>
>     * aarch64.cc (AArch64_relocate_functions::maybe_apply_stub):
>     Cast current_group_size to unsigned long when reporting error.
>
> diff --git a/gold/ChangeLog b/gold/ChangeLog
> index 5c32168..8f56043 100644
> --- a/gold/ChangeLog
> +++ b/gold/ChangeLog
> @@ -1,3 +1,8 @@
> +2014-12-14  H.J. Lu  <hongjiu.lu@intel.com>
> +
> + * aarch64.cc (AArch64_relocate_functions::maybe_apply_stub):
> + Cast current_group_size to unsigned long when reporting error.
> +
>  2014-12-10  Jing Yu  <jingyu@google.com>
>
>   * aarch64.cc (Target_aarch64): Add new variable stub_group_size_.
> diff --git a/gold/aarch64.cc b/gold/aarch64.cc
> index f2505d6..05933e0 100644
> --- a/gold/aarch64.cc
> +++ b/gold/aarch64.cc
> @@ -4205,7 +4205,7 @@ maybe_apply_stub(unsigned int r_type,
>    if (status != This::STATUS_OKAY)
>      gold_error(_("Stub is too far away, try a smaller value "
>   "for '--stub-group-size'. The current value is 0x%lx."),
> -       current_group_size);
> +       static_cast<unsigned long>(current_group_size));
>    return true;
>  }
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