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readline: Add missing GCC_FMT_ATTR

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This fixes a compiler warning with -Werror=missing-format-attribute
and allows improved compiler checks for variable argument lists.

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
This commit is contained in:
Stefan Weil 2014-01-25 18:18:23 +01:00 • committed by Michael Tokarev
parent c6830cdb2c
commit d5d1507b34
3 changed files with 6 additions and 3 deletions
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3
include/qemu/readline.h
View file

@ -5,7 +5,8 @@
#define READLINE_MAX_CMDS 64
#define READLINE_MAX_COMPLETIONS 256
typedef void ReadLinePrintfFunc(void *opaque, const char *fmt, ...);
typedef void GCC_FMT_ATTR(2, 3) ReadLinePrintfFunc(void *opaque,
const char *fmt, ...);
typedef void ReadLineFlushFunc(void *opaque);
typedef void ReadLineFunc(void *opaque, const char *str,
void *readline_opaque);

3
monitor.c
View file

@ -4888,7 +4888,8 @@ static void sortcmdlist(void)
/* These functions just adapt the readline interface in a typesafe way. We
* could cast function pointers but that discards compiler checks.
*/
static void monitor_readline_printf(void *opaque, const char *fmt, ...)
static void GCC_FMT_ATTR(2, 3) monitor_readline_printf(void *opaque,
const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);

3
qemu-io.c
View file

@ -219,7 +219,8 @@ static char *get_prompt(void)
return prompt;
}
static void readline_printf_func(void *opaque, const char *fmt, ...)
static void GCC_FMT_ATTR(2, 3) readline_printf_func(void *opaque,
const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);