readline: Add missing GCC_FMT_ATTR
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>
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@ -5,7 +5,8 @@
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#define READLINE_MAX_CMDS 64
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#define READLINE_MAX_CMDS 64
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#define READLINE_MAX_COMPLETIONS 256
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#define READLINE_MAX_COMPLETIONS 256
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typedef void ReadLinePrintfFunc(void *opaque, const char *fmt, ...);
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typedef void GCC_FMT_ATTR(2, 3) ReadLinePrintfFunc(void *opaque,
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const char *fmt, ...);
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typedef void ReadLineFlushFunc(void *opaque);
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typedef void ReadLineFlushFunc(void *opaque);
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typedef void ReadLineFunc(void *opaque, const char *str,
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typedef void ReadLineFunc(void *opaque, const char *str,
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void *readline_opaque);
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void *readline_opaque);
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@ -4888,7 +4888,8 @@ static void sortcmdlist(void)
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/* These functions just adapt the readline interface in a typesafe way. We
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/* These functions just adapt the readline interface in a typesafe way. We
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* could cast function pointers but that discards compiler checks.
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* could cast function pointers but that discards compiler checks.
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*/
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*/
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static void monitor_readline_printf(void *opaque, const char *fmt, ...)
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static void GCC_FMT_ATTR(2, 3) monitor_readline_printf(void *opaque,
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const char *fmt, ...)
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{
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{
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va_list ap;
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va_list ap;
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va_start(ap, fmt);
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va_start(ap, fmt);
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@ -219,7 +219,8 @@ static char *get_prompt(void)
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return prompt;
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return prompt;
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}
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}
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static void readline_printf_func(void *opaque, const char *fmt, ...)
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static void GCC_FMT_ATTR(2, 3) readline_printf_func(void *opaque,
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const char *fmt, ...)
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{
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{
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va_list ap;
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va_list ap;
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va_start(ap, fmt);
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va_start(ap, fmt);
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