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Bug 672854 - Crash when a syntax error is encountered immediately after the |in| in a for-in loop header. NOT REVIEWED YET

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--HG--
extra : rebase_source : 875a214b0d0b140649b0845fb649c5c4926e4804
This commit is contained in:
Jeff Walden 2011-07-20 14:26:57 -07:00
parent 55a0fe3577
commit 252a1b2636
3 changed files with 54 additions and 0 deletions
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2
js/src/jsparse.cpp
View File

@ -5242,6 +5242,8 @@ Parser::forStatement()
tc->topStmt = save->down;
#endif
pn3 = expr();
if (!pn3)
return NULL;
#if JS_HAS_BLOCK_SCOPE
if (let)
tc->topStmt = save;

1
js/src/tests/ecma_5/misc/jstests.list
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@ -2,6 +2,7 @@ url-prefix ../../jsreftest.html?test=ecma_5/misc/
script global-numeric-properties.js
script line-paragraph-separator-parse-as-lineterminator.js
script redeclare-var-non-writable-property.js
script syntax-error-end-of-for-head-part.js
script enumerate-undefined.js
script unwrapped-no-such-method.js
script explicit-undefined-optional-argument.js

51
js/src/tests/ecma_5/misc/syntax-error-end-of-for-head-part.js Normal file
View File

@ -0,0 +1,51 @@
/*
* Any copyright is dedicated to the Public Domain.
* http://creativecommons.org/licenses/publicdomain/
*/
//-----------------------------------------------------------------------------
var BUGNUMBER = 672854;
var summary =
"Syntax errors at the end of |for| statement header parts shouldn't cause " +
"crashes";
print(BUGNUMBER + ": " + summary);
/**************
* BEGIN TEST *
**************/
function checkSyntaxError(str)
{
try
{
var f = Function("for(w in\\");
throw new Error("didn't throw, returned " + f);
}
catch (e)
{
assertEq(e instanceof SyntaxError, true,
"expected SyntaxError, got " + e);
}
}
checkSyntaxError("for(var w in \\");
checkSyntaxError("for(w in \\");
checkSyntaxError("for(var w\\");
checkSyntaxError("for(w\\");
checkSyntaxError("for(var w;\\");
checkSyntaxError("for(w;\\");
checkSyntaxError("for(var w; w >\\");
checkSyntaxError("for(w; w >\\");
checkSyntaxError("for(var w; w > 3;\\");
checkSyntaxError("for(w; w > 3;\\");
checkSyntaxError("for(var w; w > 3; 5\\");
checkSyntaxError("for(w; w > 3; 5\\");
checkSyntaxError("for(var w; w > 3; 5foo");
checkSyntaxError("for(w; w > 3; 5foo");
/******************************************************************************/
reportCompare(true, true);
print("Tests complete!");