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-rw-r--r--libmount/src/optstr.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/libmount/src/optstr.c b/libmount/src/optstr.c
index 16d6d13a2..d0072447b 100644
--- a/libmount/src/optstr.c
+++ b/libmount/src/optstr.c
@@ -166,7 +166,8 @@ int mnt_optstr_next_option(char **optstr, char **name, size_t *namesz,
return mnt_optstr_parse_next(optstr, name, namesz, value, valuesz);
}
-static int __mnt_optstr_append_option(char **optstr,
+static int __attribute__((nonnull))
+__mnt_optstr_append_option(char **optstr,
const char *name, size_t nsz,
const char *value, size_t vsz)
{
@@ -356,7 +357,8 @@ int mnt_optstr_remove_option_at(char **optstr, char *begin, char *end)
}
/* insert 'substr' or '=substr' to @str on position @pos */
-static int insert_value(char **str, char *pos, const char *substr, char **next)
+static int __attribute__((nonnull(1,2,3)))
+insert_value(char **str, char *pos, const char *substr, char **next)
{
size_t subsz = strlen(substr); /* substring size */
size_t strsz = strlen(*str);