Cleanup (avoid reallocation)

Author: dstogov

ext/odbc/php_odbc.c

@@ -2058,6 +2058,7 @@ PHP_FUNCTION(odbc_fetch_row)
 PHP_FUNCTION(odbc_result)
 {
 	char *field;
+	zend_string *field_str;
 	int field_ind;
 	SQLSMALLINT sql_c_type = SQL_C_CHAR;
 	odbc_result *result;
@@ -2163,25 +2164,25 @@ PHP_FUNCTION(odbc_result)
 			}
 			/* For char data, the length of the returned string will be longreadlen - 1 */
 			fieldsize = (result->longreadlen <= 0) ? 4096 : result->longreadlen;
-			field = emalloc(fieldsize);
+			field_str = zend_string_alloc(fieldsize, 0);
 
 		/* SQLGetData will truncate CHAR data to fieldsize - 1 bytes and append \0.
 		 * For binary data it is truncated to fieldsize bytes. 
 		 */
 			rc = SQLGetData(result->stmt, (SQLUSMALLINT)(field_ind + 1), sql_c_type,
-							field, fieldsize, &result->values[field_ind].vallen);
+							ZSTR_VAL(field_str), fieldsize, &result->values[field_ind].vallen);
 
 			if (rc == SQL_ERROR) {
 				odbc_sql_error(result->conn_ptr, result->stmt, "SQLGetData");
-				efree(field);
+				zend_string_free(field_str);
 				RETURN_FALSE;
 			}
 
 			if (result->values[field_ind].vallen == SQL_NULL_DATA) {
-				efree(field);
+				zend_string_free(field_str);
 				RETURN_NULL();
 			} else if (rc == SQL_NO_DATA_FOUND) {
-				efree(field);
+				zend_string_free(field_str);
 				RETURN_FALSE;
 			}
 			/* Reduce fieldlen by 1 if we have char data. One day we might 
@@ -2196,10 +2197,10 @@ PHP_FUNCTION(odbc_result)
 			/* Don't duplicate result, saves one emalloc.
 			   For SQL_SUCCESS, the length is in vallen.
 			 */
-			RETVAL_STRINGL(field, (rc == SQL_SUCCESS_WITH_INFO) ? fieldsize : result->values[field_ind].vallen);
-			// TODO: avoid dpouble reallocation ???
-			efree(field);
-			return;
+			if (rc != SQL_SUCCESS_WITH_INFO) {
+				field_str = zend_string_truncate(field_str, result->values[field_ind].vallen, 0);
+			}
+			RETURN_NEW_STR(field_str);
 			break;
 
 		default: