Fixed bug #78154

Handle errors during next_result in exec.

NEWS

@@ -34,6 +34,8 @@ PHP                                                                        NEWS
     (Kamil Tekiela)
   . Fixed bug #63185 (nextRowset() ignores MySQL errors with native prepared
     statements). (Nikita)
+  . Fixed bug #78152 (PDO::exec() - Bad error handling with multiple commands).
+    (Nikita)
 
 - Phpdbg:
   . Fixed bug #76813 (Access violation near NULL on source operand). (cmb)

ext/pdo_mysql/mysql_driver.c

@@ -269,7 +269,8 @@ static zend_long mysql_handle_doer(pdo_dbh_t *dbh, const char *sql, size_t sql_l
 			MYSQL_RES* result;
 			while (mysql_more_results(H->server)) {
 				if (mysql_next_result(H->server)) {
-					PDO_DBG_RETURN(1);
+					pdo_mysql_error(dbh);
+					PDO_DBG_RETURN(-1);
 				}
 				result = mysql_store_result(H->server);
 				if (result) {

ext/pdo_mysql/tests/bug78152.phpt

@@ -0,0 +1,33 @@
+--TEST--
+Bug #78152: PDO::exec() - Bad error handling with multiple commands
+--SKIPIF--
+<?php
+require_once(dirname(__FILE__) . DIRECTORY_SEPARATOR . 'skipif.inc');
+require_once(dirname(__FILE__) . DIRECTORY_SEPARATOR . 'mysql_pdo_test.inc');
+MySQLPDOTest::skip();
+?>
+--FILE--
+<?php
+
+require_once(dirname(__FILE__) . DIRECTORY_SEPARATOR . 'mysql_pdo_test.inc');
+$db = MySQLPDOTest::factory();
+MySQLPDOTest::createTestTable($db);
+
+var_dump($db->exec("INSERT INTO test(id, label) VALUES (41, 'x'); INSERT INTO test_bad(id, label) VALUES (42, 'y')"));
+$db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
+try {
+    var_dump($db->exec("INSERT INTO test(id, label) VALUES (42, 'x'); INSERT INTO test_bad(id, label) VALUES (43, 'y')"));
+} catch (PDOException $e) {
+    echo $e->getMessage(), "\n";
+}
+
+?>
+--CLEAN--
+<?php
+require dirname(__FILE__) . '/mysql_pdo_test.inc';
+MySQLPDOTest::dropTestTable();
+?>
+--EXPECTF--
+Warning: PDO::exec(): SQLSTATE[42S02]: Base table or view not found: 1146 Table '%s.test_bad' doesn't exist in %s on line %d
+bool(false)
+SQLSTATE[42S02]: Base table or view not found: 1146 Table '%s.test_bad' doesn't exist