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-rw-r--r--src/basic/hostname-util.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/basic/hostname-util.h b/src/basic/hostname-util.h
index 749481723d..7ba386a0fd 100644
--- a/src/basic/hostname-util.h
+++ b/src/basic/hostname-util.h
@@ -11,6 +11,7 @@ bool hostname_is_set(void);
char* gethostname_malloc(void);
int gethostname_strict(char **ret);
+bool valid_ldh_char(char c) _const_;
bool hostname_is_valid(const char *s, bool allow_trailing_dot) _pure_;
char* hostname_cleanup(char *s);