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-rw-r--r--src/common/util.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/common/util.h b/src/common/util.h
index 2634adc62b..dcb54f0aea 100644
--- a/src/common/util.h
+++ b/src/common/util.h
@@ -228,6 +228,7 @@ const char *find_str_at_start_of_line(const char *haystack,
int string_is_C_identifier(const char *string);
int string_is_key_value(int severity, const char *string);
int string_is_valid_hostname(const char *string);
+int string_is_valid_ipv4_address(const char *string);
int tor_mem_is_zero(const char *mem, size_t len);
int tor_digest_is_zero(const char *digest);