@@ -530,11 +530,11 @@
  * use the result outside the scope of the current autorelease pool, you have to
  * copy it.
  *
  * \return The OFString as a UTF-8 encoded C string
  */
-- (const char*)UTF8String;
+- (const char*)UTF8String OF_RETURNS_INNER_POINTER;
 
 /**
  * \brief Returns the OFString as a C string in the specified encoding.
  *
  * The result is valid until the autorelease pool is released. If you want to
@@ -542,11 +542,12 @@
  * copy it.
  *
  * \param encoding The encoding for the C string
  * \return The OFString as a C string in the specified encoding
  */
-- (const char*)cStringWithEncoding: (of_string_encoding_t)encoding;;
+- (const char*)cStringWithEncoding: (of_string_encoding_t)encoding
+    OF_RETURNS_INNER_POINTER;
 
 /**
  * \brief Returns the length of the string in Unicode characters.
  *
  * \return The length of the string in Unicode characters
@@ -837,11 +838,11 @@
  * use the result outside the scope of the current autorelease pool, you have to
  * copy it.
  *
  * \return The string as an array of Unicode characters
  */
-- (const of_unichar_t*)unicodeString;
+- (const of_unichar_t*)unicodeString OF_RETURNS_INNER_POINTER;
 
 /**
  * \brief Returns the string in big endian UTF-16 encoding.
  *
  * The result is valid until the autorelease pool is released. If you want to
@@ -848,11 +849,11 @@
  * use the result outside the scope of the current autorelease pool, you have to
  * copy it.
  *
  * \return The string in big endian UTF-16 encoding
  */
-- (const uint16_t*)UTF16String;
+- (const uint16_t*)UTF16String OF_RETURNS_INNER_POINTER;
 
 /**
  * \brief Writes the string into the specified file using UTF-8 encoding.
  *
  * \param path The path of the file to write to