[libvirt] [PATCH] virkeyfile: fix compilation error with clang

[Christophe de Dinechin]

> On 10 Dec 2019, at 15:11, Pavel Hrdina <phrdina at redhat.com> wrote:
> 
> Clang complains about condition being always true:
> 
> src/util/virkeyfile.c:113:23: error: result of comparison of constant 128 with expression of type 'const char' is always true [-Werror,-Wtautological-constant-out-of-range-compare]
>    while (!IS_EOF && IS_ASCII(CUR) && CUR != ']')
>                      ^~~~~~~~~~~~~
> src/util/virkeyfile.c:80:26: note: expanded from macro 'IS_ASCII'
>                     ~~~ ^ ~~~
> 
> Signed-off-by: Pavel Hrdina <phrdina at redhat.com>
> ---
> src/util/virkeyfile.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/src/util/virkeyfile.c b/src/util/virkeyfile.c
> index 816bfae96d..ee29bd7aa6 100644
> --- a/src/util/virkeyfile.c
> +++ b/src/util/virkeyfile.c
> @@ -77,7 +77,7 @@ struct _virKeyFileParserCtxt {
> #define IS_EOF (ctxt->cur >= ctxt->end)
> #define IS_EOL(c) (((c) == '\n') || ((c) == '\r'))
> #define IS_BLANK(c) (((c) == ' ') || ((c) == '\t'))
> -#define IS_ASCII(c) ((c) < 128)
> +#define IS_ASCII(c) (((unsigned char) c) < 128)

Probably want parentheses around c.


> #define CUR (*ctxt->cur)
> #define NEXT if (!IS_EOF) ctxt->cur++;
> 
> -- 
> 2.23.0
> 
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