apply workaround for the leak only when GLIBC is used

diff --git a/ext/standard/dns.c b/ext/standard/dns.c
index 56ca26fe85d53cdaaaf92f250d71a805baf78e67..eec94fda1df4a1c45f9f2bdaedcb9393918d42ee 100644 (file)
--- a/ext/standard/dns.c
+++ b/ext/standard/dns.c
@@ -374,6 +374,9 @@ typedef union {
  *   res_thread_freeres() in glibc/resolv/res_init.c 
  *   __libc_res_nsend()   in resolv/res_send.c 
  * */
+
+#ifdef __GLIBC__
+#define php_dns_free_res(__res__) _php_dns_free_res(__res__)
 static void _php_dns_free_res(struct __res_state res) { /* {{{ */
        int ns;
        for (ns = 0; ns < MAXNS; ns++) {
@@ -383,6 +386,9 @@ static void _php_dns_free_res(struct __res_state res) { /* {{{ */
                }
        }
 } /* }}} */
+#else
+#define php_dns_free_res(__res__)
+#endif
 
 /* {{{ php_parserr */
 static u_char *php_parserr(u_char *cp, querybuf *answer, int type_to_fetch, int store, zval **subarray)
@@ -771,7 +777,7 @@ PHP_FUNCTION(dns_get_record)
                                php_error_docref(NULL TSRMLS_CC, E_WARNING, "res_nmkquery() failed");
                                zval_dtor(return_value);
                                res_nclose(&res);
-                               _php_dns_free_res(res);
+                               php_dns_free_res(res);
                                RETURN_FALSE;
                        }
                        n = res_nsend(&res, buf.qb2, n, answer.qb2, sizeof answer);
@@ -779,7 +785,7 @@ PHP_FUNCTION(dns_get_record)
                                php_error_docref(NULL TSRMLS_CC, E_WARNING, "res_nsend() failed");
                                zval_dtor(return_value);
                                res_nclose(&res);
-                               _php_dns_free_res(res);
+                               php_dns_free_res(res);
                                RETURN_FALSE;
                        }
                
@@ -798,7 +804,7 @@ PHP_FUNCTION(dns_get_record)
                                        php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to parse DNS data received");
                                        zval_dtor(return_value);
                                        res_nclose(&res);
-                                       _php_dns_free_res(res);
+                                       php_dns_free_res(res);
                                        RETURN_FALSE;
                                }
                                cp += n + QFIXEDSZ;
@@ -814,7 +820,7 @@ PHP_FUNCTION(dns_get_record)
                                }
                        }
                        res_nclose(&res);
-                       _php_dns_free_res(res);
+                       php_dns_free_res(res);
                }
        }