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tools/nolibc: annotate va_list printf formats

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__attribute__(format(printf)) can also be used for functions that take a
va_list argument.

As per the GCC docs:

    For functions where the arguments are not available to be checked
    (such as vprintf), specify the third parameter as zero.

Link: https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html
Signed-off-by: Thomas Weißschuh <linux@weissschuh.net>
This commit is contained in:
Thomas Weißschuh 2023-11-23 22:53:13 +01:00
parent b9e64724cd
commit dece8476d6
1 changed files with 2 additions and 2 deletions
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4
tools/include/nolibc/stdio.h
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@ -212,7 +212,7 @@ char *fgets(char *s, int size, FILE *stream)
* - %s
* - unknown modifiers are ignored.
*/
static __attribute__((unused))
static __attribute__((unused, format(printf, 2, 0)))
int vfprintf(FILE *stream, const char *fmt, va_list args)
{
char escape, lpref, c;
@ -318,7 +318,7 @@ int vfprintf(FILE *stream, const char *fmt, va_list args)
return written;
}
static __attribute__((unused))
static __attribute__((unused, format(printf, 1, 0)))
int vprintf(const char *fmt, va_list args)
{
return vfprintf(stdout, fmt, args);