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genksyms: add printf format attribute to error_with_pos()

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When compiling with -Wsuggest-attribute=format in HOSTCFLAGS, gcc
complains that error_with_pos() may be declared with a printf format
attribute:

    scripts/genksyms/genksyms.c:726:3: warning: function might be
    possible candidate for ‘gnu_printf’ format attribute
    [-Wsuggest-attribute=format]
       vfprintf(stderr, fmt, args);
       ^~~~~~~~

This would allow catching printf-format errors at compile time in
callers to error_with_pos(). Add this attribute.

Signed-off-by: Nicolas Iooss <nicolas.iooss_linux@m4x.org>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
This commit is contained in:
Nicolas Iooss 2017-05-20 13:27:00 +02:00 committed by Masahiro Yamada
parent 08332893e3
commit 3def03441e
1 changed files with 1 additions and 1 deletions
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scripts/genksyms/genksyms.h
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@ -75,7 +75,7 @@ struct string_list *copy_list_range(struct string_list *start,
int yylex(void);
int yyparse(void);
void error_with_pos(const char *, ...);
void error_with_pos(const char *, ...) __attribute__ ((format(printf, 1, 2)));
/*----------------------------------------------------------------------*/
#define xmalloc(size) ({ void *__ptr = malloc(size); \