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compel std_printf: annotate with printf

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This function works like printf, and it helps the compiler
to know that, so it can check whether arguments fit the
format string.

Signed-off-by: Kir Kolyshkin <kir@openvz.org>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>
This commit is contained in:
Kir Kolyshkin 2017-02-13 16:59:38 -08:00 committed by Andrei Vagin
parent 6b5b2996d4
commit 026968f63a
1 changed files with 3 additions and 1 deletions
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4
compel/plugins/include/uapi/std/string.h
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@ -14,7 +14,9 @@
extern void __std_putc(int fd, char c);
extern void __std_puts(int fd, const char *s);
extern void __std_printk(int fd, const char *format, va_list args);
extern void __std_printf(int fd, const char *format, ...);
extern void __std_printf(int fd, const char *format, ...)
__attribute__ ((__format__ (__printf__, 2, 3)));
#define std_printf(fmt, ...) __std_printf(STDOUT_FILENO, fmt, ##__VA_ARGS__)
#define std_puts(s) __std_puts(STDOUT_FILENO, s)