@- OCIResult() could return garbage if called on empty result-sets. (thies)

# fix #19364

ext/oci8/oci8.c

@@ -1244,7 +1244,7 @@ _oci_make_zval(zval *value,oci_statement *statement,oci_out_column *column, char
 			oci_debug("_oci_make_zval: %16s,retlen = %4d,retlen4 = %d,storage_size4 = %4d,indicator %4d, retcode = %4d",
 					  column->name,column->retlen,column->retlen4,column->storage_size4,column->indicator,column->retcode);
 	
-	if (column->indicator == -1) { /* column is NULL */
+	if ((! statement->has_data) || (column->indicator == -1)) { /* column is NULL or statment has no current data */
 		ZVAL_NULL(value); 
 		return 0;
 	}
@@ -1392,7 +1392,9 @@ static oci_statement *oci_parse(oci_connection *connection, char *query, int len
 	if (query) {
 		statement->last_query = estrdup(query);
 	}
+
 	statement->conn = connection;
+	statement->has_data = 0;
 
 	statement->id = zend_list_insert(statement,le_stmt);
 
@@ -1769,6 +1771,7 @@ oci_fetch(oci_statement *statement, ub4 nrows, char *func TSRMLS_DC)
 		}
 
 		statement->error = 0; /* OCI_NO_DATA is NO error for us!!! */
+		statement->has_data = 0;
 
 		return 0;
 	}
@@ -1828,12 +1831,16 @@ oci_fetch(oci_statement *statement, ub4 nrows, char *func TSRMLS_DC)
 			_oci_make_zval(column->define->zval,statement,column,"OCIFetch",0 TSRMLS_CC);
 		}
 
+		statement->has_data = 1;
+
 		return 1;
 	}
 
 	oci_error(statement->pError, func, statement->error);
 	oci_handle_error(statement->conn, statement->error);
 
+	statement->has_data = 0;
+
 	return 0;
 }
 

ext/oci8/php_oci8.h

@@ -119,6 +119,7 @@ typedef struct {
 	HashTable *defines;
 	int ncolumns;
 	int executed;
+	int has_data;
 	ub2 stmttype;
 } oci_statement;