[PATCHv2] sysdeps/ieee754/soft-fp: ignore maybe-uninitialized with -O [BZ #19444]

[Joseph Myers]

On Sun, 30 Sep 2018, Martin Jansa wrote:

> +#include <libc-diag.h>
> +/* R_f[01] are not set in cases where it is not used in packing, but the
> +   compiler does not see that it is set in all cases where it is
> +   used, resulting in warnings that it may be used uninitialized.
> +   The location of the warning differs in different versions of GCC,
> +   it may be where R is defined using a macro or it may be where the
> +   macro is defined.  */

This comment is missing the key information that it's specifically a 
warning seen with -O1.

-- 
Joseph S. Myers
joseph@codesourcery.com