[U-Boot] [PATCH 1/1] lib: errno: avoid error format-overflow

[Tom Rini]

On Sun, Oct 06, 2019 at 01:58:57PM +0200, Heinrich Schuchardt wrote:

> In cmd/regulator.c an error occurs with GCC 9.2.1 if CONFIG_ERRNO_STR is
> not defined:
> 
> cmd/regulator.c: In function ‘failure’:
> cmd/regulator.c:20:2: error: ‘%s’ directive argument is null
> [-Werror=format-overflow=]
>    20 |  printf("Error: %d (%s)\n", ret, errno_str(ret));
>       |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> In function ‘constraint’,
>     inlined from ‘constraint’ at cmd/regulator.c:111:12:
> cmd/regulator.c:115:3: error: ‘%s’ directive argument is null
> [-Werror=format-overflow=]
>   115 |   printf(" %s (err: %d)\n", errno_str(val), val);
>       |   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 
> errno_str() should return a valid string instead of NULL if
> CONFIG_ERRNO_STR is not defined.
> 
> Signed-off-by: Heinrich Schuchardt <xypron.glpk at gmx.de>

Applied to u-boot/master, thanks!

-- 
Tom
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