[GOOGLE] Disable overflow warning of the offset

[Xinliang David Li]

ok

david

On Thu, Feb 19, 2015 at 11:07 AM, Dehao Chen <dehao@google.com> wrote:
> The offset overflow warning would cause build fails when function's
> start line is missing(0). Until the start line issues is fixed, we
> will suppress this warning.
>
> Testing on-going. OK for google-4_9?
>
> Thanks,
> Dehao
>
> Index: gcc/auto-profile.c
>
> ===================================================================
> --- gcc/auto-profile.c (revision 219263)
> +++ gcc/auto-profile.c (working copy)
> @@ -398,8 +398,6 @@ static unsigned
>  get_combined_location (location_t loc, tree decl)
>  {
>    /* TODO: allow more bits for line and less bits for discriminator.  */
> -  if (LOCATION_LINE (loc) - DECL_SOURCE_LINE (decl) >= (1<<16))
> -    warning_at (loc, OPT_Woverflow, "Offset exceeds 16 bytes.");
>    return ((LOCATION_LINE (loc) - DECL_SOURCE_LINE (decl)) << 16)
>           | get_discriminator_from_locus (loc);
>  }