From 239e2dda6487761271fa5258e642b716dd79a02b Mon Sep 17 00:00:00 2001
From: Nikita Popov <nikita.ppv@gmail.com>
Date: Fri, 4 Oct 2019 22:42:14 +0200
Subject: Make sure T_ERROR is returned for all lexer exceptions

This originally manifested as a leak in oss-fuzz #18000. The following
is a reduced test case:

    <?php
    [
        5 => 1,
        "foo" > 1,
        "      " => "" == 0
    ];
    <<<BAR
    $x
     BAR;

Because this particular error condition did not return T_ERROR,
EG(exception) was set while performing binary operation constant
evaluation, which checks exceptions for cast failures.

Instead of adding this indirect test case, I'm adding an assertion
that the lexer has to return T_ERROR if EG(exception) is set.
---
 Zend/zend_compile.c          |   6 +-
 Zend/zend_language_scanner.c | 251 +++++++++++++++++++++++--------------------
 Zend/zend_language_scanner.l |  15 +++
 3 files changed, 153 insertions(+), 119 deletions(-)

diff --git a/Zend/zend_compile.c b/Zend/zend_compile.c
index fbf65822d4..c8199c1c14 100644
--- a/Zend/zend_compile.c
+++ b/Zend/zend_compile.c
@@ -1693,13 +1693,17 @@ ZEND_API void zend_activate_auto_globals(void) /* {{{ */
 int ZEND_FASTCALL zendlex(zend_parser_stack_elem *elem) /* {{{ */
 {
 	zval zv;
+	int ret;
 
 	if (CG(increment_lineno)) {
 		CG(zend_lineno)++;
 		CG(increment_lineno) = 0;
 	}
 
-	return lex_scan(&zv, elem);
+	ret = lex_scan(&zv, elem);
+	ZEND_ASSERT(!EG(exception) || ret == T_ERROR);
+	return ret;
+
 }
 /* }}} */
 
diff --git a/Zend/zend_language_scanner.c b/Zend/zend_language_scanner.c
index cc1a938c13..25da78e28c 100644
--- a/Zend/zend_language_scanner.c
+++ b/Zend/zend_language_scanner.c
@@ -1454,7 +1454,7 @@ yy3:
 		++YYCURSOR;
 		YYDEBUG(4, *YYCURSOR);
 		yyleng = YYCURSOR - SCNG(yy_text);
-#line 2750 "Zend/zend_language_scanner.l"
+#line 2765 "Zend/zend_language_scanner.l"
 		{
 	if (YYCURSOR > YYLIMIT) {
 		RETURN_TOKEN(END);
@@ -2269,7 +2269,7 @@ yy62:
 		++YYCURSOR;
 		YYDEBUG(63, *YYCURSOR);
 		yyleng = YYCURSOR - SCNG(yy_text);
-#line 2403 "Zend/zend_language_scanner.l"
+#line 2412 "Zend/zend_language_scanner.l"
 		{
 	BEGIN(ST_BACKQUOTE);
 	RETURN_TOKEN('`');
@@ -4713,6 +4713,9 @@ yy397:
 		if (!IS_LABEL_SUCCESSOR(YYCURSOR[heredoc_label->length])) {
 			if (spacing == (HEREDOC_USING_SPACES | HEREDOC_USING_TABS)) {
 				zend_throw_exception(zend_ce_parse_error, "Invalid indentation - tabs and spaces cannot be mixed", 0);
+				if (PARSER_MODE()) {
+					RETURN_TOKEN(T_ERROR);
+				}
 			}
 
 			YYCURSOR = saved_cursor;
@@ -4729,6 +4732,7 @@ yy397:
 		zend_lex_state current_state;
 		int heredoc_nesting_level = 1;
 		int first_token = 0;
+		int error = 0;
 
 		zend_save_lexical_state(&current_state);
 
@@ -4776,6 +4780,7 @@ yy397:
 		     || first_token == T_CURLY_OPEN
 		    ) && SCNG(heredoc_indentation)) {
 			zend_throw_exception_ex(zend_ce_parse_error, 0, "Invalid body indentation level (expecting an indentation level of at least %d)", SCNG(heredoc_indentation));
+			error = 1;
 		}
 
 		heredoc_label->indentation = SCNG(heredoc_indentation);
@@ -4784,11 +4789,15 @@ yy397:
 		zend_restore_lexical_state(&current_state);
 		SCNG(heredoc_scan_ahead) = 0;
 		CG(increment_lineno) = 0;
+
+		if (PARSER_MODE() && error) {
+			RETURN_TOKEN(T_ERROR);
+		}
 	}
 
 	RETURN_TOKEN(T_START_HEREDOC);
 }
-#line 4792 "Zend/zend_language_scanner.c"
+#line 4801 "Zend/zend_language_scanner.c"
 yy398:
 		YYDEBUG(398, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -4812,7 +4821,7 @@ yy400:
 		{
 	RETURN_TOKEN(T_ARRAY);
 }
-#line 4816 "Zend/zend_language_scanner.c"
+#line 4825 "Zend/zend_language_scanner.c"
 yy402:
 		YYDEBUG(402, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -4825,7 +4834,7 @@ yy402:
 		{
 	RETURN_TOKEN(T_BREAK);
 }
-#line 4829 "Zend/zend_language_scanner.c"
+#line 4838 "Zend/zend_language_scanner.c"
 yy404:
 		YYDEBUG(404, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -4844,7 +4853,7 @@ yy405:
 		{
 	RETURN_TOKEN(T_CATCH);
 }
-#line 4848 "Zend/zend_language_scanner.c"
+#line 4857 "Zend/zend_language_scanner.c"
 yy407:
 		YYDEBUG(407, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -4857,7 +4866,7 @@ yy407:
 		{
 	RETURN_TOKEN(T_CLASS);
 }
-#line 4861 "Zend/zend_language_scanner.c"
+#line 4870 "Zend/zend_language_scanner.c"
 yy409:
 		YYDEBUG(409, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -4870,7 +4879,7 @@ yy409:
 		{
 	RETURN_TOKEN(T_CLONE);
 }
-#line 4874 "Zend/zend_language_scanner.c"
+#line 4883 "Zend/zend_language_scanner.c"
 yy411:
 		YYDEBUG(411, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -4883,7 +4892,7 @@ yy411:
 		{
 	RETURN_TOKEN(T_CONST);
 }
-#line 4887 "Zend/zend_language_scanner.c"
+#line 4896 "Zend/zend_language_scanner.c"
 yy413:
 		YYDEBUG(413, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -4920,7 +4929,7 @@ yy417:
 		{
 	RETURN_TOKEN(T_EMPTY);
 }
-#line 4924 "Zend/zend_language_scanner.c"
+#line 4933 "Zend/zend_language_scanner.c"
 yy419:
 		YYDEBUG(419, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -4945,7 +4954,7 @@ yy421:
 		{
 	RETURN_TOKEN(T_ENDIF);
 }
-#line 4949 "Zend/zend_language_scanner.c"
+#line 4958 "Zend/zend_language_scanner.c"
 yy423:
 		YYDEBUG(423, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -4991,7 +5000,7 @@ yy427:
 		{
 	RETURN_TOKEN(T_FINAL);
 }
-#line 4995 "Zend/zend_language_scanner.c"
+#line 5004 "Zend/zend_language_scanner.c"
 yy428:
 		YYDEBUG(428, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -5052,7 +5061,7 @@ yy436:
 		{
 	RETURN_TOKEN(T_ISSET);
 }
-#line 5056 "Zend/zend_language_scanner.c"
+#line 5065 "Zend/zend_language_scanner.c"
 yy438:
 		YYDEBUG(438, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -5071,7 +5080,7 @@ yy439:
 		{
 	RETURN_TOKEN(T_PRINT);
 }
-#line 5075 "Zend/zend_language_scanner.c"
+#line 5084 "Zend/zend_language_scanner.c"
 yy441:
 		YYDEBUG(441, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -5126,7 +5135,7 @@ yy448:
 		{
 	RETURN_TOKEN(T_THROW);
 }
-#line 5130 "Zend/zend_language_scanner.c"
+#line 5139 "Zend/zend_language_scanner.c"
 yy450:
 		YYDEBUG(450, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -5139,7 +5148,7 @@ yy450:
 		{
 	RETURN_TOKEN(T_TRAIT);
 }
-#line 5143 "Zend/zend_language_scanner.c"
+#line 5152 "Zend/zend_language_scanner.c"
 yy452:
 		YYDEBUG(452, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -5152,7 +5161,7 @@ yy452:
 		{
 	RETURN_TOKEN(T_UNSET);
 }
-#line 5156 "Zend/zend_language_scanner.c"
+#line 5165 "Zend/zend_language_scanner.c"
 yy454:
 		YYDEBUG(454, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -5165,7 +5174,7 @@ yy454:
 		{
 	RETURN_TOKEN(T_WHILE);
 }
-#line 5169 "Zend/zend_language_scanner.c"
+#line 5178 "Zend/zend_language_scanner.c"
 yy456:
 		YYDEBUG(456, *YYCURSOR);
 		yyaccept = 6;
@@ -5187,7 +5196,7 @@ yy457:
 		{
 	RETURN_TOKEN(T_YIELD);
 }
-#line 5191 "Zend/zend_language_scanner.c"
+#line 5200 "Zend/zend_language_scanner.c"
 yy458:
 		YYDEBUG(458, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -5283,7 +5292,7 @@ yy471:
 		{
 	RETURN_TOKEN(T_BOOL_CAST);
 }
-#line 5287 "Zend/zend_language_scanner.c"
+#line 5296 "Zend/zend_language_scanner.c"
 yy474:
 		YYDEBUG(474, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -5317,7 +5326,7 @@ yy478:
 		{
 	RETURN_TOKEN(T_DOUBLE_CAST);
 }
-#line 5321 "Zend/zend_language_scanner.c"
+#line 5330 "Zend/zend_language_scanner.c"
 yy480:
 		YYDEBUG(480, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -5386,7 +5395,7 @@ yy489:
 		{
 	RETURN_TOKEN(T_ELSEIF);
 }
-#line 5390 "Zend/zend_language_scanner.c"
+#line 5399 "Zend/zend_language_scanner.c"
 yy491:
 		YYDEBUG(491, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -5420,7 +5429,7 @@ yy493:
 		{
 	RETURN_TOKEN(T_ENDFOR);
 }
-#line 5424 "Zend/zend_language_scanner.c"
+#line 5433 "Zend/zend_language_scanner.c"
 yy494:
 		YYDEBUG(494, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -5469,7 +5478,7 @@ yy500:
 		{
 	RETURN_TOKEN(T_GLOBAL);
 }
-#line 5473 "Zend/zend_language_scanner.c"
+#line 5482 "Zend/zend_language_scanner.c"
 yy502:
 		YYDEBUG(502, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -5530,7 +5539,7 @@ yy510:
 		{
 	RETURN_TOKEN(T_PUBLIC);
 }
-#line 5534 "Zend/zend_language_scanner.c"
+#line 5543 "Zend/zend_language_scanner.c"
 yy512:
 		YYDEBUG(512, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -5549,7 +5558,7 @@ yy513:
 		{
 	RETURN_TOKEN(T_RETURN);
 }
-#line 5553 "Zend/zend_language_scanner.c"
+#line 5562 "Zend/zend_language_scanner.c"
 yy515:
 		YYDEBUG(515, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -5562,7 +5571,7 @@ yy515:
 		{
 	RETURN_TOKEN(T_STATIC);
 }
-#line 5566 "Zend/zend_language_scanner.c"
+#line 5575 "Zend/zend_language_scanner.c"
 yy517:
 		YYDEBUG(517, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -5575,7 +5584,7 @@ yy517:
 		{
 	RETURN_TOKEN(T_SWITCH);
 }
-#line 5579 "Zend/zend_language_scanner.c"
+#line 5588 "Zend/zend_language_scanner.c"
 yy519:
 		YYDEBUG(519, *YYCURSOR);
 		++YYCURSOR;
@@ -5659,7 +5668,7 @@ yy530:
 		{
 	RETURN_TOKEN(T_ARRAY_CAST);
 }
-#line 5663 "Zend/zend_language_scanner.c"
+#line 5672 "Zend/zend_language_scanner.c"
 yy532:
 		YYDEBUG(532, *YYCURSOR);
 		++YYCURSOR;
@@ -5709,7 +5718,7 @@ yy538:
 		{
 	RETURN_TOKEN(T_UNSET_CAST);
 }
-#line 5713 "Zend/zend_language_scanner.c"
+#line 5722 "Zend/zend_language_scanner.c"
 yy540:
 		YYDEBUG(540, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -5740,7 +5749,7 @@ yy543:
 		{
 	RETURN_TOKEN(T_DECLARE);
 }
-#line 5744 "Zend/zend_language_scanner.c"
+#line 5753 "Zend/zend_language_scanner.c"
 yy545:
 		YYDEBUG(545, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -5753,7 +5762,7 @@ yy545:
 		{
 	RETURN_TOKEN(T_DEFAULT);
 }
-#line 5757 "Zend/zend_language_scanner.c"
+#line 5766 "Zend/zend_language_scanner.c"
 yy547:
 		YYDEBUG(547, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -5790,7 +5799,7 @@ yy551:
 		{
 	RETURN_TOKEN(T_EXTENDS);
 }
-#line 5794 "Zend/zend_language_scanner.c"
+#line 5803 "Zend/zend_language_scanner.c"
 yy553:
 		YYDEBUG(553, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -5803,7 +5812,7 @@ yy553:
 		{
 	RETURN_TOKEN(T_FINALLY);
 }
-#line 5807 "Zend/zend_language_scanner.c"
+#line 5816 "Zend/zend_language_scanner.c"
 yy555:
 		YYDEBUG(555, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -5816,7 +5825,7 @@ yy555:
 		{
 	RETURN_TOKEN(T_FOREACH);
 }
-#line 5820 "Zend/zend_language_scanner.c"
+#line 5829 "Zend/zend_language_scanner.c"
 yy557:
 		YYDEBUG(557, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -5854,7 +5863,7 @@ yy560:
 		{
 	RETURN_TOKEN(T_INCLUDE);
 }
-#line 5858 "Zend/zend_language_scanner.c"
+#line 5867 "Zend/zend_language_scanner.c"
 yy561:
 		YYDEBUG(561, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -5891,7 +5900,7 @@ yy565:
 		{
 	RETURN_TOKEN(T_PRIVATE);
 }
-#line 5895 "Zend/zend_language_scanner.c"
+#line 5904 "Zend/zend_language_scanner.c"
 yy567:
 		YYDEBUG(567, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -5923,7 +5932,7 @@ yy569:
 		{
 	RETURN_TOKEN(T_REQUIRE);
 }
-#line 5927 "Zend/zend_language_scanner.c"
+#line 5936 "Zend/zend_language_scanner.c"
 yy570:
 		YYDEBUG(570, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -5947,7 +5956,7 @@ yy572:
 		{
 	RETURN_TOKEN(T_DIR);
 }
-#line 5951 "Zend/zend_language_scanner.c"
+#line 5960 "Zend/zend_language_scanner.c"
 yy574:
 		YYDEBUG(574, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -5996,7 +6005,7 @@ yy581:
 		{
 	RETURN_TOKEN(T_STRING_CAST);
 }
-#line 6000 "Zend/zend_language_scanner.c"
+#line 6009 "Zend/zend_language_scanner.c"
 yy583:
 		YYDEBUG(583, *YYCURSOR);
 		++YYCURSOR;
@@ -6006,7 +6015,7 @@ yy583:
 		{
 	RETURN_TOKEN(T_OBJECT_CAST);
 }
-#line 6010 "Zend/zend_language_scanner.c"
+#line 6019 "Zend/zend_language_scanner.c"
 yy585:
 		YYDEBUG(585, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -6019,7 +6028,7 @@ yy585:
 		{
 	RETURN_TOKEN(T_ABSTRACT);
 }
-#line 6023 "Zend/zend_language_scanner.c"
+#line 6032 "Zend/zend_language_scanner.c"
 yy587:
 		YYDEBUG(587, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -6032,7 +6041,7 @@ yy587:
 		{
 	RETURN_TOKEN(T_CALLABLE);
 }
-#line 6036 "Zend/zend_language_scanner.c"
+#line 6045 "Zend/zend_language_scanner.c"
 yy589:
 		YYDEBUG(589, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -6045,7 +6054,7 @@ yy589:
 		{
 	RETURN_TOKEN(T_CONTINUE);
 }
-#line 6049 "Zend/zend_language_scanner.c"
+#line 6058 "Zend/zend_language_scanner.c"
 yy591:
 		YYDEBUG(591, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -6076,7 +6085,7 @@ yy594:
 		{
 	RETURN_TOKEN(T_ENDWHILE);
 }
-#line 6080 "Zend/zend_language_scanner.c"
+#line 6089 "Zend/zend_language_scanner.c"
 yy596:
 		YYDEBUG(596, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -6089,7 +6098,7 @@ yy596:
 		{
 	RETURN_TOKEN(T_FUNCTION);
 }
-#line 6093 "Zend/zend_language_scanner.c"
+#line 6102 "Zend/zend_language_scanner.c"
 yy598:
 		YYDEBUG(598, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -6161,7 +6170,7 @@ yy608:
 		{
 	RETURN_TOKEN(T_FILE);
 }
-#line 6165 "Zend/zend_language_scanner.c"
+#line 6174 "Zend/zend_language_scanner.c"
 yy610:
 		YYDEBUG(610, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -6186,7 +6195,7 @@ yy612:
 		{
 	RETURN_TOKEN(T_LINE);
 }
-#line 6190 "Zend/zend_language_scanner.c"
+#line 6199 "Zend/zend_language_scanner.c"
 yy614:
 		YYDEBUG(614, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -6227,7 +6236,7 @@ yy619:
 		{
 	RETURN_TOKEN(T_ENDSWITCH);
 }
-#line 6231 "Zend/zend_language_scanner.c"
+#line 6240 "Zend/zend_language_scanner.c"
 yy621:
 		YYDEBUG(621, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -6258,7 +6267,7 @@ yy624:
 		{
     RETURN_TOKEN(T_INSTEADOF);
 }
-#line 6262 "Zend/zend_language_scanner.c"
+#line 6271 "Zend/zend_language_scanner.c"
 yy626:
 		YYDEBUG(626, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -6271,7 +6280,7 @@ yy626:
 		{
 	RETURN_TOKEN(T_INTERFACE);
 }
-#line 6275 "Zend/zend_language_scanner.c"
+#line 6284 "Zend/zend_language_scanner.c"
 yy628:
 		YYDEBUG(628, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -6284,7 +6293,7 @@ yy628:
 		{
 	RETURN_TOKEN(T_NAMESPACE);
 }
-#line 6288 "Zend/zend_language_scanner.c"
+#line 6297 "Zend/zend_language_scanner.c"
 yy630:
 		YYDEBUG(630, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -6297,7 +6306,7 @@ yy630:
 		{
 	RETURN_TOKEN(T_PROTECTED);
 }
-#line 6301 "Zend/zend_language_scanner.c"
+#line 6310 "Zend/zend_language_scanner.c"
 yy632:
 		YYDEBUG(632, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -6322,7 +6331,7 @@ yy634:
 		{
 	RETURN_TOKEN(T_CLASS_C);
 }
-#line 6326 "Zend/zend_language_scanner.c"
+#line 6335 "Zend/zend_language_scanner.c"
 yy636:
 		YYDEBUG(636, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -6358,7 +6367,7 @@ yy640:
 		{
 	RETURN_TOKEN(T_TRAIT_C);
 }
-#line 6362 "Zend/zend_language_scanner.c"
+#line 6371 "Zend/zend_language_scanner.c"
 yy642:
 		YYDEBUG(642, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -6371,7 +6380,7 @@ yy642:
 		{
 	RETURN_TOKEN(T_ENDDECLARE);
 }
-#line 6375 "Zend/zend_language_scanner.c"
+#line 6384 "Zend/zend_language_scanner.c"
 yy644:
 		YYDEBUG(644, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -6384,7 +6393,7 @@ yy644:
 		{
 	RETURN_TOKEN(T_ENDFOREACH);
 }
-#line 6388 "Zend/zend_language_scanner.c"
+#line 6397 "Zend/zend_language_scanner.c"
 yy646:
 		YYDEBUG(646, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -6397,7 +6406,7 @@ yy646:
 		{
 	RETURN_TOKEN(T_IMPLEMENTS);
 }
-#line 6401 "Zend/zend_language_scanner.c"
+#line 6410 "Zend/zend_language_scanner.c"
 yy648:
 		YYDEBUG(648, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -6416,7 +6425,7 @@ yy649:
 		{
 	RETURN_TOKEN(T_INSTANCEOF);
 }
-#line 6420 "Zend/zend_language_scanner.c"
+#line 6429 "Zend/zend_language_scanner.c"
 yy651:
 		YYDEBUG(651, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -6468,7 +6477,7 @@ yy655:
 		{
 	RETURN_TOKEN(T_METHOD_C);
 }
-#line 6472 "Zend/zend_language_scanner.c"
+#line 6481 "Zend/zend_language_scanner.c"
 yy657:
 		YYDEBUG(657, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -6498,7 +6507,7 @@ yy660:
 	HANDLE_NEWLINES(yytext, yyleng);
 	RETURN_TOKEN(T_YIELD_FROM);
 }
-#line 6502 "Zend/zend_language_scanner.c"
+#line 6511 "Zend/zend_language_scanner.c"
 yy662:
 		YYDEBUG(662, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -6527,7 +6536,7 @@ yy665:
 		{
 	RETURN_TOKEN(T_INCLUDE_ONCE);
 }
-#line 6531 "Zend/zend_language_scanner.c"
+#line 6540 "Zend/zend_language_scanner.c"
 yy667:
 		YYDEBUG(667, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -6540,7 +6549,7 @@ yy667:
 		{
 	RETURN_TOKEN(T_REQUIRE_ONCE);
 }
-#line 6544 "Zend/zend_language_scanner.c"
+#line 6553 "Zend/zend_language_scanner.c"
 yy669:
 		YYDEBUG(669, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -6553,7 +6562,7 @@ yy669:
 		{
 	RETURN_TOKEN(T_FUNC_C);
 }
-#line 6557 "Zend/zend_language_scanner.c"
+#line 6566 "Zend/zend_language_scanner.c"
 yy671:
 		YYDEBUG(671, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -6583,7 +6592,7 @@ yy674:
 		{
 	RETURN_TOKEN(T_NS_C);
 }
-#line 6587 "Zend/zend_language_scanner.c"
+#line 6596 "Zend/zend_language_scanner.c"
 yy676:
 		YYDEBUG(676, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -6601,7 +6610,7 @@ yy677:
 		{
 	RETURN_TOKEN(T_HALT_COMPILER);
 }
-#line 6605 "Zend/zend_language_scanner.c"
+#line 6614 "Zend/zend_language_scanner.c"
 	}
 /* *********************************** */
 yyc_ST_LOOKING_FOR_PROPERTY:
@@ -6673,7 +6682,7 @@ yy682:
 	yy_pop_state();
 	goto restart;
 }
-#line 6677 "Zend/zend_language_scanner.c"
+#line 6686 "Zend/zend_language_scanner.c"
 yy683:
 		YYDEBUG(683, *YYCURSOR);
 		++YYCURSOR;
@@ -6689,7 +6698,7 @@ yy683:
 		{
 	goto return_whitespace;
 }
-#line 6693 "Zend/zend_language_scanner.c"
+#line 6702 "Zend/zend_language_scanner.c"
 yy686:
 		YYDEBUG(686, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -6711,7 +6720,7 @@ yy687:
 	yy_pop_state();
 	RETURN_TOKEN_WITH_STR(T_STRING, 0);
 }
-#line 6715 "Zend/zend_language_scanner.c"
+#line 6724 "Zend/zend_language_scanner.c"
 yy690:
 		YYDEBUG(690, *YYCURSOR);
 		++YYCURSOR;
@@ -6721,7 +6730,7 @@ yy690:
 		{
 	RETURN_TOKEN(T_OBJECT_OPERATOR);
 }
-#line 6725 "Zend/zend_language_scanner.c"
+#line 6734 "Zend/zend_language_scanner.c"
 	}
 /* *********************************** */
 yyc_ST_BACKQUOTE:
@@ -6774,7 +6783,7 @@ yyc_ST_BACKQUOTE:
 yy695:
 		YYDEBUG(695, *YYCURSOR);
 		yyleng = YYCURSOR - SCNG(yy_text);
-#line 2495 "Zend/zend_language_scanner.l"
+#line 2504 "Zend/zend_language_scanner.l"
 		{
 	if (YYCURSOR > YYLIMIT) {
 		RETURN_TOKEN(END);
@@ -6819,7 +6828,7 @@ yy695:
 		RETURN_TOKEN(T_ERROR);
 	}
 }
-#line 6823 "Zend/zend_language_scanner.c"
+#line 6832 "Zend/zend_language_scanner.c"
 yy696:
 		YYDEBUG(696, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -6843,12 +6852,12 @@ yy697:
 		++YYCURSOR;
 		YYDEBUG(698, *YYCURSOR);
 		yyleng = YYCURSOR - SCNG(yy_text);
-#line 2435 "Zend/zend_language_scanner.l"
+#line 2444 "Zend/zend_language_scanner.l"
 		{
 	BEGIN(ST_IN_SCRIPTING);
 	RETURN_TOKEN('`');
 }
-#line 6852 "Zend/zend_language_scanner.c"
+#line 6861 "Zend/zend_language_scanner.c"
 yy699:
 		YYDEBUG(699, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -6873,7 +6882,7 @@ yy702:
 		{
 	RETURN_TOKEN_WITH_STR(T_VARIABLE, 1);
 }
-#line 6877 "Zend/zend_language_scanner.c"
+#line 6886 "Zend/zend_language_scanner.c"
 yy703:
 		YYDEBUG(703, *YYCURSOR);
 		++YYCURSOR;
@@ -6884,19 +6893,19 @@ yy703:
 	yy_push_state(ST_LOOKING_FOR_VARNAME);
 	RETURN_TOKEN(T_DOLLAR_OPEN_CURLY_BRACES);
 }
-#line 6888 "Zend/zend_language_scanner.c"
+#line 6897 "Zend/zend_language_scanner.c"
 yy705:
 		YYDEBUG(705, *YYCURSOR);
 		++YYCURSOR;
 		YYDEBUG(706, *YYCURSOR);
 		yyleng = YYCURSOR - SCNG(yy_text);
-#line 2423 "Zend/zend_language_scanner.l"
+#line 2432 "Zend/zend_language_scanner.l"
 		{
 	yy_push_state(ST_IN_SCRIPTING);
 	yyless(1);
 	RETURN_TOKEN(T_CURLY_OPEN);
 }
-#line 6900 "Zend/zend_language_scanner.c"
+#line 6909 "Zend/zend_language_scanner.c"
 yy707:
 		YYDEBUG(707, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -6916,7 +6925,7 @@ yy709:
 	yy_push_state(ST_VAR_OFFSET);
 	RETURN_TOKEN_WITH_STR(T_VARIABLE, 1);
 }
-#line 6920 "Zend/zend_language_scanner.c"
+#line 6929 "Zend/zend_language_scanner.c"
 yy711:
 		YYDEBUG(711, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -6940,7 +6949,7 @@ yy712:
 	yy_push_state(ST_LOOKING_FOR_PROPERTY);
 	RETURN_TOKEN_WITH_STR(T_VARIABLE, 1);
 }
-#line 6944 "Zend/zend_language_scanner.c"
+#line 6953 "Zend/zend_language_scanner.c"
 	}
 /* *********************************** */
 yyc_ST_DOUBLE_QUOTES:
@@ -6993,7 +7002,7 @@ yyc_ST_DOUBLE_QUOTES:
 yy717:
 		YYDEBUG(717, *YYCURSOR);
 		yyleng = YYCURSOR - SCNG(yy_text);
-#line 2441 "Zend/zend_language_scanner.l"
+#line 2450 "Zend/zend_language_scanner.l"
 		{
 	if (GET_DOUBLE_QUOTES_SCANNED_LENGTH()) {
 		YYCURSOR += GET_DOUBLE_QUOTES_SCANNED_LENGTH() - 1;
@@ -7046,18 +7055,18 @@ double_quotes_scan_done:
 		RETURN_TOKEN(T_ERROR);
 	}
 }
-#line 7050 "Zend/zend_language_scanner.c"
+#line 7059 "Zend/zend_language_scanner.c"
 yy718:
 		YYDEBUG(718, *YYCURSOR);
 		++YYCURSOR;
 		YYDEBUG(719, *YYCURSOR);
 		yyleng = YYCURSOR - SCNG(yy_text);
-#line 2430 "Zend/zend_language_scanner.l"
+#line 2439 "Zend/zend_language_scanner.l"
 		{
 	BEGIN(ST_IN_SCRIPTING);
 	RETURN_TOKEN('"');
 }
-#line 7061 "Zend/zend_language_scanner.c"
+#line 7070 "Zend/zend_language_scanner.c"
 yy720:
 		YYDEBUG(720, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -7100,7 +7109,7 @@ yy724:
 		{
 	RETURN_TOKEN_WITH_STR(T_VARIABLE, 1);
 }
-#line 7104 "Zend/zend_language_scanner.c"
+#line 7113 "Zend/zend_language_scanner.c"
 yy725:
 		YYDEBUG(725, *YYCURSOR);
 		++YYCURSOR;
@@ -7111,19 +7120,19 @@ yy725:
 	yy_push_state(ST_LOOKING_FOR_VARNAME);
 	RETURN_TOKEN(T_DOLLAR_OPEN_CURLY_BRACES);
 }
-#line 7115 "Zend/zend_language_scanner.c"
+#line 7124 "Zend/zend_language_scanner.c"
 yy727:
 		YYDEBUG(727, *YYCURSOR);
 		++YYCURSOR;
 		YYDEBUG(728, *YYCURSOR);
 		yyleng = YYCURSOR - SCNG(yy_text);
-#line 2423 "Zend/zend_language_scanner.l"
+#line 2432 "Zend/zend_language_scanner.l"
 		{
 	yy_push_state(ST_IN_SCRIPTING);
 	yyless(1);
 	RETURN_TOKEN(T_CURLY_OPEN);
 }
-#line 7127 "Zend/zend_language_scanner.c"
+#line 7136 "Zend/zend_language_scanner.c"
 yy729:
 		YYDEBUG(729, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -7143,7 +7152,7 @@ yy731:
 	yy_push_state(ST_VAR_OFFSET);
 	RETURN_TOKEN_WITH_STR(T_VARIABLE, 1);
 }
-#line 7147 "Zend/zend_language_scanner.c"
+#line 7156 "Zend/zend_language_scanner.c"
 yy733:
 		YYDEBUG(733, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -7167,7 +7176,7 @@ yy734:
 	yy_push_state(ST_LOOKING_FOR_PROPERTY);
 	RETURN_TOKEN_WITH_STR(T_VARIABLE, 1);
 }
-#line 7171 "Zend/zend_language_scanner.c"
+#line 7180 "Zend/zend_language_scanner.c"
 	}
 /* *********************************** */
 yyc_ST_HEREDOC:
@@ -7216,7 +7225,7 @@ yyc_ST_HEREDOC:
 yy739:
 		YYDEBUG(739, *YYCURSOR);
 		yyleng = YYCURSOR - SCNG(yy_text);
-#line 2541 "Zend/zend_language_scanner.l"
+#line 2550 "Zend/zend_language_scanner.l"
 		{
 	zend_heredoc_label *heredoc_label = zend_ptr_stack_top(&SCNG(heredoc_label_stack));
 	int newline = 0, indentation = 0, spacing = 0;
@@ -7262,6 +7271,9 @@ yy739:
 
 					if (spacing == (HEREDOC_USING_SPACES | HEREDOC_USING_TABS)) {
 						zend_throw_exception(zend_ce_parse_error, "Invalid indentation - tabs and spaces cannot be mixed", 0);
+						if (PARSER_MODE()) {
+							RETURN_TOKEN(T_ERROR);
+						}
 					}
 
 					/* newline before label will be subtracted from returned text, but
@@ -7336,7 +7348,7 @@ heredoc_scan_done:
 
 	RETURN_TOKEN_WITH_VAL(T_ENCAPSED_AND_WHITESPACE);
 }
-#line 7340 "Zend/zend_language_scanner.c"
+#line 7352 "Zend/zend_language_scanner.c"
 yy740:
 		YYDEBUG(740, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -7379,7 +7391,7 @@ yy744:
 		{
 	RETURN_TOKEN_WITH_STR(T_VARIABLE, 1);
 }
-#line 7383 "Zend/zend_language_scanner.c"
+#line 7395 "Zend/zend_language_scanner.c"
 yy745:
 		YYDEBUG(745, *YYCURSOR);
 		++YYCURSOR;
@@ -7390,19 +7402,19 @@ yy745:
 	yy_push_state(ST_LOOKING_FOR_VARNAME);
 	RETURN_TOKEN(T_DOLLAR_OPEN_CURLY_BRACES);
 }
-#line 7394 "Zend/zend_language_scanner.c"
+#line 7406 "Zend/zend_language_scanner.c"
 yy747:
 		YYDEBUG(747, *YYCURSOR);
 		++YYCURSOR;
 		YYDEBUG(748, *YYCURSOR);
 		yyleng = YYCURSOR - SCNG(yy_text);
-#line 2423 "Zend/zend_language_scanner.l"
+#line 2432 "Zend/zend_language_scanner.l"
 		{
 	yy_push_state(ST_IN_SCRIPTING);
 	yyless(1);
 	RETURN_TOKEN(T_CURLY_OPEN);
 }
-#line 7406 "Zend/zend_language_scanner.c"
+#line 7418 "Zend/zend_language_scanner.c"
 yy749:
 		YYDEBUG(749, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -7422,7 +7434,7 @@ yy751:
 	yy_push_state(ST_VAR_OFFSET);
 	RETURN_TOKEN_WITH_STR(T_VARIABLE, 1);
 }
-#line 7426 "Zend/zend_language_scanner.c"
+#line 7438 "Zend/zend_language_scanner.c"
 yy753:
 		YYDEBUG(753, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -7446,7 +7458,7 @@ yy754:
 	yy_push_state(ST_LOOKING_FOR_PROPERTY);
 	RETURN_TOKEN_WITH_STR(T_VARIABLE, 1);
 }
-#line 7450 "Zend/zend_language_scanner.c"
+#line 7462 "Zend/zend_language_scanner.c"
 	}
 /* *********************************** */
 yyc_ST_LOOKING_FOR_VARNAME:
@@ -7510,7 +7522,7 @@ yy759:
 	yy_push_state(ST_IN_SCRIPTING);
 	goto restart;
 }
-#line 7514 "Zend/zend_language_scanner.c"
+#line 7526 "Zend/zend_language_scanner.c"
 yy760:
 		YYDEBUG(760, *YYCURSOR);
 		yych = *(YYMARKER = ++YYCURSOR);
@@ -7564,7 +7576,7 @@ yy764:
 	yy_push_state(ST_IN_SCRIPTING);
 	RETURN_TOKEN_WITH_STR(T_STRING_VARNAME, 0);
 }
-#line 7568 "Zend/zend_language_scanner.c"
+#line 7580 "Zend/zend_language_scanner.c"
 	}
 /* *********************************** */
 yyc_ST_VAR_OFFSET:
@@ -7653,7 +7665,7 @@ yy768:
 		++YYCURSOR;
 		YYDEBUG(769, *YYCURSOR);
 		yyleng = YYCURSOR - SCNG(yy_text);
-#line 2750 "Zend/zend_language_scanner.l"
+#line 2765 "Zend/zend_language_scanner.l"
 		{
 	if (YYCURSOR > YYLIMIT) {
 		RETURN_TOKEN(END);
@@ -7664,7 +7676,7 @@ yy768:
 	}
 	goto restart;
 }
-#line 7668 "Zend/zend_language_scanner.c"
+#line 7680 "Zend/zend_language_scanner.c"
 yy770:
 		YYDEBUG(770, *YYCURSOR);
 		++YYCURSOR;
@@ -7678,7 +7690,7 @@ yy770:
 	ZVAL_NULL(zendlval);
 	RETURN_TOKEN_WITH_VAL(T_ENCAPSED_AND_WHITESPACE);
 }
-#line 7682 "Zend/zend_language_scanner.c"
+#line 7694 "Zend/zend_language_scanner.c"
 yy772:
 		YYDEBUG(772, *YYCURSOR);
 		++YYCURSOR;
@@ -7690,7 +7702,7 @@ yy773:
 	/* Only '[' or '-' can be valid, but returning other tokens will allow a more explicit parse error */
 	RETURN_TOKEN(yytext[0]);
 }
-#line 7694 "Zend/zend_language_scanner.c"
+#line 7706 "Zend/zend_language_scanner.c"
 yy774:
 		YYDEBUG(774, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -7741,7 +7753,7 @@ string:
 	}
 	RETURN_TOKEN_WITH_VAL(T_NUM_STRING);
 }
-#line 7745 "Zend/zend_language_scanner.c"
+#line 7757 "Zend/zend_language_scanner.c"
 yy777:
 		YYDEBUG(777, *YYCURSOR);
 		++YYCURSOR;
@@ -7767,7 +7779,7 @@ yy779:
 		{
 	RETURN_TOKEN_WITH_STR(T_STRING, 0);
 }
-#line 7771 "Zend/zend_language_scanner.c"
+#line 7783 "Zend/zend_language_scanner.c"
 yy782:
 		YYDEBUG(782, *YYCURSOR);
 		++YYCURSOR;
@@ -7778,7 +7790,7 @@ yy782:
 	yy_pop_state();
 	RETURN_TOKEN(']');
 }
-#line 7782 "Zend/zend_language_scanner.c"
+#line 7794 "Zend/zend_language_scanner.c"
 yy784:
 		YYDEBUG(784, *YYCURSOR);
 		++YYCURSOR;
@@ -7807,7 +7819,7 @@ yy786:
 		{
 	RETURN_TOKEN_WITH_STR(T_VARIABLE, 1);
 }
-#line 7811 "Zend/zend_language_scanner.c"
+#line 7823 "Zend/zend_language_scanner.c"
 yy787:
 		YYDEBUG(787, *YYCURSOR);
 		++YYCURSOR;
@@ -7828,7 +7840,7 @@ yy789:
 	}
 	RETURN_TOKEN_WITH_VAL(T_NUM_STRING);
 }
-#line 7832 "Zend/zend_language_scanner.c"
+#line 7844 "Zend/zend_language_scanner.c"
 yy790:
 		YYDEBUG(790, *YYCURSOR);
 		yych = *++YYCURSOR;
@@ -7925,7 +7937,7 @@ inline_char_handler:
 	HANDLE_NEWLINES(yytext, yyleng);
 	RETURN_TOKEN_WITH_VAL(T_INLINE_HTML);
 }
-#line 7929 "Zend/zend_language_scanner.c"
+#line 7941 "Zend/zend_language_scanner.c"
 yy801:
 	YYDEBUG(801, *YYCURSOR);
 	yych = *++YYCURSOR;
@@ -7953,7 +7965,7 @@ yy803:
 		goto inline_char_handler;
 	}
 }
-#line 7957 "Zend/zend_language_scanner.c"
+#line 7969 "Zend/zend_language_scanner.c"
 yy804:
 	YYDEBUG(804, *YYCURSOR);
 	++YYCURSOR;
@@ -7967,7 +7979,7 @@ yy804:
 	}
 	RETURN_TOKEN(T_OPEN_TAG_WITH_ECHO);
 }
-#line 7971 "Zend/zend_language_scanner.c"
+#line 7983 "Zend/zend_language_scanner.c"
 yy806:
 	YYDEBUG(806, *YYCURSOR);
 	yych = *++YYCURSOR;
@@ -8007,7 +8019,7 @@ yy811:
 	}
 	RETURN_TOKEN(T_OPEN_TAG);
 }
-#line 8011 "Zend/zend_language_scanner.c"
+#line 8023 "Zend/zend_language_scanner.c"
 yy812:
 	YYDEBUG(812, *YYCURSOR);
 	yych = *++YYCURSOR;
@@ -8022,7 +8034,7 @@ yyc_ST_END_HEREDOC:
 	++YYCURSOR;
 	YYDEBUG(816, *YYCURSOR);
 	yyleng = YYCURSOR - SCNG(yy_text);
-#line 2409 "Zend/zend_language_scanner.l"
+#line 2418 "Zend/zend_language_scanner.l"
 	{
 	zend_heredoc_label *heredoc_label = zend_ptr_stack_pop(&SCNG(heredoc_label_stack));
 
@@ -8035,7 +8047,7 @@ yyc_ST_END_HEREDOC:
 	BEGIN(ST_IN_SCRIPTING);
 	RETURN_TOKEN(T_END_HEREDOC);
 }
-#line 8039 "Zend/zend_language_scanner.c"
+#line 8051 "Zend/zend_language_scanner.c"
 /* *********************************** */
 yyc_ST_NOWDOC:
 	YYDEBUG(817, *YYCURSOR);
@@ -8045,7 +8057,7 @@ yyc_ST_NOWDOC:
 	++YYCURSOR;
 	YYDEBUG(820, *YYCURSOR);
 	yyleng = YYCURSOR - SCNG(yy_text);
-#line 2662 "Zend/zend_language_scanner.l"
+#line 2674 "Zend/zend_language_scanner.l"
 	{
 	zend_heredoc_label *heredoc_label = zend_ptr_stack_top(&SCNG(heredoc_label_stack));
 	int newline = 0, indentation = 0, spacing = -1;
@@ -8091,6 +8103,9 @@ yyc_ST_NOWDOC:
 
 					if (spacing == (HEREDOC_USING_SPACES | HEREDOC_USING_TABS)) {
 						zend_throw_exception(zend_ce_parse_error, "Invalid indentation - tabs and spaces cannot be mixed", 0);
+						if (PARSER_MODE()) {
+							RETURN_TOKEN(T_ERROR);
+						}
 					}
 
 					/* newline before label will be subtracted from returned text, but
@@ -8132,9 +8147,9 @@ nowdoc_scan_done:
 	HANDLE_NEWLINES(yytext, yyleng - newline);
 	RETURN_TOKEN_WITH_VAL(T_ENCAPSED_AND_WHITESPACE);
 }
-#line 8136 "Zend/zend_language_scanner.c"
+#line 8151 "Zend/zend_language_scanner.c"
 }
-#line 2761 "Zend/zend_language_scanner.l"
+#line 2776 "Zend/zend_language_scanner.l"
 
 
 emit_token_with_str:
diff --git a/Zend/zend_language_scanner.l b/Zend/zend_language_scanner.l
index 2b432abe54..704aa998d3 100644
--- a/Zend/zend_language_scanner.l
+++ b/Zend/zend_language_scanner.l
@@ -2323,6 +2323,9 @@ skip_escape_conversion:
 		if (!IS_LABEL_SUCCESSOR(YYCURSOR[heredoc_label->length])) {
 			if (spacing == (HEREDOC_USING_SPACES | HEREDOC_USING_TABS)) {
 				zend_throw_exception(zend_ce_parse_error, "Invalid indentation - tabs and spaces cannot be mixed", 0);
+				if (PARSER_MODE()) {
+					RETURN_TOKEN(T_ERROR);
+				}
 			}
 
 			YYCURSOR = saved_cursor;
@@ -2339,6 +2342,7 @@ skip_escape_conversion:
 		zend_lex_state current_state;
 		int heredoc_nesting_level = 1;
 		int first_token = 0;
+		int error = 0;
 
 		zend_save_lexical_state(&current_state);
 
@@ -2386,6 +2390,7 @@ skip_escape_conversion:
 		     || first_token == T_CURLY_OPEN
 		    ) && SCNG(heredoc_indentation)) {
 			zend_throw_exception_ex(zend_ce_parse_error, 0, "Invalid body indentation level (expecting an indentation level of at least %d)", SCNG(heredoc_indentation));
+			error = 1;
 		}
 
 		heredoc_label->indentation = SCNG(heredoc_indentation);
@@ -2394,6 +2399,10 @@ skip_escape_conversion:
 		zend_restore_lexical_state(&current_state);
 		SCNG(heredoc_scan_ahead) = 0;
 		CG(increment_lineno) = 0;
+
+		if (PARSER_MODE() && error) {
+			RETURN_TOKEN(T_ERROR);
+		}
 	}
 
 	RETURN_TOKEN(T_START_HEREDOC);
@@ -2583,6 +2592,9 @@ double_quotes_scan_done:
 
 					if (spacing == (HEREDOC_USING_SPACES | HEREDOC_USING_TABS)) {
 						zend_throw_exception(zend_ce_parse_error, "Invalid indentation - tabs and spaces cannot be mixed", 0);
+						if (PARSER_MODE()) {
+							RETURN_TOKEN(T_ERROR);
+						}
 					}
 
 					/* newline before label will be subtracted from returned text, but
@@ -2704,6 +2716,9 @@ heredoc_scan_done:
 
 					if (spacing == (HEREDOC_USING_SPACES | HEREDOC_USING_TABS)) {
 						zend_throw_exception(zend_ce_parse_error, "Invalid indentation - tabs and spaces cannot be mixed", 0);
+						if (PARSER_MODE()) {
+							RETURN_TOKEN(T_ERROR);
+						}
 					}
 
 					/* newline before label will be subtracted from returned text, but
-- 
cgit v1.2.1