In file included from Curl.xs:581:0:
curlopt-constants.c: In function 'constant':
curlopt-constants.c:19:58: warning: 'return' with no value, in function returning non-void
             if (strEQ(name, "DID_MEMORY_FUNC_TYPEDEFS")) return CURL_DID_MEMORY_FUNC_TYPEDEFS;