Saleem Abdulrasool <compn...@compnerd.org> writes:
> For ARM EHABI _Unwind_{G,S}setIP are macros rather than proper functions as
> they
> are extensions to the EHABI specification (though they are part of the Level 1
> interface). Quote the macro parameters, as otherwise, a complex parameter may
> be ambiguously mis-expanded.
> ---
> libgcc/config/arm/unwind-arm.h | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/libgcc/config/arm/unwind-arm.h b/libgcc/config/arm/unwind-arm.h
> index f1f789c..3821c08 100644
> --- a/libgcc/config/arm/unwind-arm.h
> +++ b/libgcc/config/arm/unwind-arm.h
> @@ -74,10 +74,10 @@ extern "C" {
> }
> /* Return the address of the instruction, not the actual IP value. */
> #define _Unwind_GetIP(context) \
> - (_Unwind_GetGR (context, 15) & ~(_Unwind_Word)1)
> + (_Unwind_GetGR ((context), 15) & ~(_Unwind_Word)1)
How can that get mis-expanded (other than cheating with a macro that
expands to a comma)?
Andreas.
--
Andreas Schwab, sch...@linux-m68k.org
GPG Key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
"And now for something completely different."
