findmnt: add __format__ attribute

Reported-by: Jan Pazdziora <jpazdziora@redhat.com>
Signed-off-by: Karel Zak <kzak@redhat.com>

diff --git a/misc-utils/findmnt-verify.c b/misc-utils/findmnt-verify.c
index 2ef7ecff32e8592daa5be4e2696a12d4ad57b905..164c6589ba658a7fa09347d0dc98c3bfe7dd7701 100644 (file)
--- a/misc-utils/findmnt-verify.c
+++ b/misc-utils/findmnt-verify.c
@@ -32,7 +32,8 @@ struct verify_context {
                        no_fsck : 1;
 };
 
-static void verify_mesg(struct verify_context *vfy, char type, const char *fmt, va_list ap)
+static void __attribute__ ((__format__ (__printf__, 3, 0)))
+       verify_mesg(struct verify_context *vfy, char type, const char *fmt, va_list ap)
 {
        if (!vfy->target_printed) {
                fprintf(stdout, "%s\n", mnt_fs_get_target(vfy->fs));
@@ -44,7 +45,8 @@ static void verify_mesg(struct verify_context *vfy, char type, const char *fmt,
        fputc('\n', stdout);
 }
 
-static int verify_warn(struct verify_context *vfy, const char *fmt, ...)
+static int __attribute__ ((__format__ (__printf__, 2, 3)))
+       verify_warn(struct verify_context *vfy, const char *fmt, ...)
 {
        va_list ap;
        vfy->nwarnings++;
@@ -54,7 +56,8 @@ static int verify_warn(struct verify_context *vfy, const char *fmt, ...)
        return 0;
 }
 
-static int verify_err(struct verify_context *vfy, const char *fmt, ...)
+static int __attribute__ ((__format__ (__printf__, 2, 3)))
+       verify_err(struct verify_context *vfy, const char *fmt, ...)
 {
        va_list ap;
        vfy->nerrors++;
@@ -64,7 +67,8 @@ static int verify_err(struct verify_context *vfy, const char *fmt, ...)
        return 0;
 }
 
-static int verify_ok(struct verify_context *vfy __attribute__((unused)),
+static int __attribute__ ((__format__ (__printf__, 2, 3)))
+       verify_ok(struct verify_context *vfy __attribute__((unused)),
                      const char *fmt, ...)
 {
        va_list ap;