fix: add missing #[no_mangle] decorator to yrx_rule_metadata

capi/include/yara_x.h

@@ -222,6 +222,15 @@ enum YRX_RESULT yrx_rule_namespace(const struct YRX_RULE *rule,
                                    const uint8_t **ns,
                                    size_t *len);
 
+// Returns the metadata associated to a rule.
+//
+// The metadata is represented by a [`YRX_METADATA`] object that must be
+// destroyed with [`yrx_metadata_destroy`] when not needed anymore.
+//
+// This function returns a null pointer when `rule` is null or the
+// rule doesn't have any metadata.
+struct YRX_METADATA *yrx_rule_metadata(const struct YRX_RULE *rule);
+
 // Destroys a [`YRX_METADATA`] object.
 void yrx_metadata_destroy(struct YRX_METADATA *metadata);
 

capi/src/lib.rs

@@ -446,6 +446,7 @@ pub unsafe extern "C" fn yrx_rule_namespace(
 ///
 /// This function returns a null pointer when `rule` is null or the
 /// rule doesn't have any metadata.
+#[no_mangle]
 pub unsafe extern "C" fn yrx_rule_metadata(
     rule: *const YRX_RULE,
 ) -> *mut YRX_METADATA {

site/content/docs/api/c.md

@@ -435,6 +435,15 @@ The `*ns` pointer will be valid as long as the [YRX_RULES](#yrx_rules) object
 that contains the rule is not destroyed. The namespace is guaranteed to be a
 valid UTF-8 string.
 
+#### yrx_rule_metadata
+
+```c
+enum YRX_RESULT yrx_rule_namespace(
+    const struct YRX_RULE *rule,
+    const uint8_t **ns,
+    size_t *len);
+```
+
 #### yrx_rule_patterns
 
 ```c