Title: [219263] trunk
Revision
219263
Author
[email protected]
Date
2017-07-07 12:50:00 -0700 (Fri, 07 Jul 2017)

Log Message

\n\r is not the same as \r\n.
https://bugs.webkit.org/show_bug.cgi?id=173053

Reviewed by Keith Miller.

JSTests:

* stress/regress-173053.js: Added.
* stress/template-literal-line-terminators.js:

Source/_javascript_Core:

* parser/Lexer.cpp:
(JSC::Lexer<T>::shiftLineTerminator):
(JSC::LineNumberAdder::add):

LayoutTests:

* js/parse-backslash-before-newline-expected.txt:
* js/script-tests/parse-backslash-before-newline.js:

Modified Paths

Added Paths

Diff

Modified: trunk/JSTests/ChangeLog (219262 => 219263)


--- trunk/JSTests/ChangeLog	2017-07-07 19:36:08 UTC (rev 219262)
+++ trunk/JSTests/ChangeLog	2017-07-07 19:50:00 UTC (rev 219263)
@@ -1,3 +1,13 @@
+2017-07-07  Mark Lam  <[email protected]>
+
+        \n\r is not the same as \r\n.
+        https://bugs.webkit.org/show_bug.cgi?id=173053
+
+        Reviewed by Keith Miller.
+
+        * stress/regress-173053.js: Added.
+        * stress/template-literal-line-terminators.js:
+
 2017-07-06  Saam Barati  <[email protected]>
 
         We are missing places where we invalidate the for-in context

Added: trunk/JSTests/stress/regress-173053.js (0 => 219263)


--- trunk/JSTests/stress/regress-173053.js	                        (rev 0)
+++ trunk/JSTests/stress/regress-173053.js	2017-07-07 19:50:00 UTC (rev 219263)
@@ -0,0 +1,19 @@
+var exception;
+
+try {
+    eval("'\\\r\n'");
+} catch (e) {
+    exception = e;
+}
+
+if (exception)
+    throw "FAILED: \\r\\n should be handled as a line terminator";
+
+try {
+    eval("'\\\n\r'");
+} catch (e) {
+    exception = e;
+}
+
+if (exception != "SyntaxError: Unexpected EOF")
+    throw "FAILED: \\n\\r should NOT be handled as a line terminator.  Expected exception: 'SyntaxError: Unexpected EOF', actual: '" + exception + "'";

Modified: trunk/JSTests/stress/template-literal-line-terminators.js (219262 => 219263)


--- trunk/JSTests/stress/template-literal-line-terminators.js	2017-07-07 19:36:08 UTC (rev 219262)
+++ trunk/JSTests/stress/template-literal-line-terminators.js	2017-07-07 19:50:00 UTC (rev 219263)
@@ -1,7 +1,7 @@
 
 function test(actual, expected) {
     if (actual !== expected)
-        throw new Error("bad value: " + actual);
+        throw new Error("bad value: actual: " + actual + ", expected: " + expected);
 }
 
 function testEval(script, expected) {
@@ -36,20 +36,20 @@
 testEvalLineNumber("`Hello\r\rWorld`", "Hello\n\nWorld", 3);
 testEvalLineNumber("`Hello\r\nWorld`", "Hello\nWorld", 2);
 testEvalLineNumber("`Hello\n\nWorld`", "Hello\n\nWorld", 3);
-testEvalLineNumber("`Hello\n\rWorld`", "Hello\n\nWorld", 2);
+testEvalLineNumber("`Hello\n\rWorld`", "Hello\n\nWorld", 3);
 
 testEvalLineNumber("`Hello\n\r\nWorld`", "Hello\n\nWorld", 3);
 testEvalLineNumber("`Hello\r\n\rWorld`", "Hello\n\nWorld", 3);
 testEvalLineNumber("`Hello\n\n\nWorld`", "Hello\n\n\nWorld", 4);
 
-testEvalLineNumber("`Hello\n\r\n\rWorld`", "Hello\n\n\nWorld", 3);
+testEvalLineNumber("`Hello\n\r\n\rWorld`", "Hello\n\n\nWorld", 4);
 testEvalLineNumber("`Hello\n\r\n\nWorld`", "Hello\n\n\nWorld", 4);
 testEvalLineNumber("`Hello\r\n\n\nWorld`", "Hello\n\n\nWorld", 4);
 
-testEvalLineNumber("`Hello\\\n\r\rWorld`", "Hello\n\nWorld", 3);
+testEvalLineNumber("`Hello\\\n\r\rWorld`", "Hello\n\nWorld", 4);
 testEvalLineNumber("`Hello\\\r\n\n\nWorld`", "Hello\n\nWorld", 4);
 testEvalLineNumber("`Hello\\\n\r\n\nWorld`", "Hello\n\nWorld", 4);
-testEvalLineNumber("`Hello\\\n\r\r\nWorld`", "Hello\n\nWorld", 3);
+testEvalLineNumber("`Hello\\\n\r\r\nWorld`", "Hello\n\nWorld", 4);
 
 testEvalLineNumber("`\u2028`", "\u2028", 2);
 testEvalLineNumber("`\u2029`", "\u2029", 2);

Modified: trunk/LayoutTests/ChangeLog (219262 => 219263)


--- trunk/LayoutTests/ChangeLog	2017-07-07 19:36:08 UTC (rev 219262)
+++ trunk/LayoutTests/ChangeLog	2017-07-07 19:50:00 UTC (rev 219263)
@@ -1,3 +1,13 @@
+2017-07-07  Mark Lam  <[email protected]>
+
+        \n\r is not the same as \r\n.
+        https://bugs.webkit.org/show_bug.cgi?id=173053
+
+        Reviewed by Keith Miller.
+
+        * js/parse-backslash-before-newline-expected.txt:
+        * js/script-tests/parse-backslash-before-newline.js:
+
 2017-07-07  Matt Lewis  <[email protected]>
 
         Unreviewed, rolling out r219256.

Modified: trunk/LayoutTests/js/parse-backslash-before-newline-expected.txt (219262 => 219263)


--- trunk/LayoutTests/js/parse-backslash-before-newline-expected.txt	2017-07-07 19:36:08 UTC (rev 219262)
+++ trunk/LayoutTests/js/parse-backslash-before-newline-expected.txt	2017-07-07 19:50:00 UTC (rev 219263)
@@ -1,5 +1,6 @@
 PASS "teststring with CR LF" is "teststring with CR LF"
-PASS "teststring with LF CR" is "teststring with LF CR"
+PASS "test
+string with LF CR" threw exception SyntaxError: Unexpected EOF.
 PASS "teststring with CR" is "teststring with CR"
 PASS "teststring with LF" is "teststring with LF"
 PASS successfullyParsed is true

Modified: trunk/LayoutTests/js/script-tests/parse-backslash-before-newline.js (219262 => 219263)


--- trunk/LayoutTests/js/script-tests/parse-backslash-before-newline.js	2017-07-07 19:36:08 UTC (rev 219262)
+++ trunk/LayoutTests/js/script-tests/parse-backslash-before-newline.js	2017-07-07 19:50:00 UTC (rev 219263)
@@ -1,9 +1,9 @@
 shouldBe('"test\
 string with CR LF"', '"teststring with CR LF"');
 
-shouldBe('"test\
+shouldThrow(`"test\
 -string with LF CR"', '"teststring with LF CR"');
+string with LF CR"`, '"SyntaxError: Unexpected EOF"');
 
 shouldBe('"test\ string with CR"', '"teststring with CR"');

Modified: trunk/Source/_javascript_Core/ChangeLog (219262 => 219263)


--- trunk/Source/_javascript_Core/ChangeLog	2017-07-07 19:36:08 UTC (rev 219262)
+++ trunk/Source/_javascript_Core/ChangeLog	2017-07-07 19:50:00 UTC (rev 219263)
@@ -1,3 +1,14 @@
+2017-07-07  Mark Lam  <[email protected]>
+
+        \n\r is not the same as \r\n.
+        https://bugs.webkit.org/show_bug.cgi?id=173053
+
+        Reviewed by Keith Miller.
+
+        * parser/Lexer.cpp:
+        (JSC::Lexer<T>::shiftLineTerminator):
+        (JSC::LineNumberAdder::add):
+
 2017-07-07  Commit Queue  <[email protected]>
 
         Unreviewed, rolling out r219238, r219239, and r219241.

Modified: trunk/Source/_javascript_Core/parser/Lexer.cpp (219262 => 219263)


--- trunk/Source/_javascript_Core/parser/Lexer.cpp	2017-07-07 19:36:08 UTC (rev 219262)
+++ trunk/Source/_javascript_Core/parser/Lexer.cpp	2017-07-07 19:50:00 UTC (rev 219263)
@@ -1,6 +1,6 @@
 /*
  *  Copyright (C) 1999-2000 Harri Porten ([email protected])
- *  Copyright (C) 2006-2009, 2011-2013, 2016 Apple Inc. All Rights Reserved.
+ *  Copyright (C) 2006-2017 Apple Inc. All Rights Reserved.
  *  Copyright (C) 2007 Cameron Zwarich ([email protected])
  *  Copyright (C) 2010 Zoltan Herczeg ([email protected])
  *  Copyright (C) 2012 Mathias Bynens ([email protected])
@@ -705,8 +705,7 @@
     T prev = m_current;
     shift();
 
-    // Allow both CRLF and LFCR.
-    if (prev + m_current == '\n' + '\r')
+    if (prev == '\r' && m_current == '\n')
         shift();
 
     ++m_lineNumber;
@@ -1411,7 +1410,7 @@
     void add(CharacterType character)
     {
         ASSERT(Lexer<CharacterType>::isLineTerminator(character));
-        if ((character + m_previous) == ('\n' + '\r'))
+        if (m_previous == '\r' && character == '\n')
             m_previous = 0;
         else {
             ++m_lineNumber;
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