On Thu, Jul 09, 2020 at 07:34:56AM +0200, Thomas Huth wrote:
> diff --git a/util/coroutine-ucontext.c b/util/coroutine-ucontext.c
> index f0b66320e1..a4e6446ed9 100644
> --- a/util/coroutine-ucontext.c
> +++ b/util/coroutine-ucontext.c
> @@ -237,19 +237,15 @@ Coroutine *qemu_coroutine_new(void)
>  }
>  
>  #ifdef CONFIG_VALGRIND_H
> -#if defined(CONFIG_PRAGMA_DIAGNOSTIC_AVAILABLE) && !defined(__clang__)
>  /* Work around an unused variable in the valgrind.h macro... */
>  #pragma GCC diagnostic push
>  #pragma GCC diagnostic ignored "-Wunused-but-set-variable"
> -#endif

What about !defined(__clang__)? Looks like this will break clang builds:

  warning: unknown warning option '-Wunused-but-set-variable'; did you mean 
'-Wunused-const-variable'? [-Wunknown-warning-option]

Stefan

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