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In Interpreter.interpret THROW/JTHROW switch cases do not use result variable to hold temporary values to throw, use locally declared "Object exception" for that as result should only be used for value of Interpreter.interpret

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igor%mir2.org 2002-03-23 20:51:05 +00:00
parent 88848ef677
commit 5024940d53
1 changed files with 13 additions and 11 deletions
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24
js/rhino/src/org/mozilla/javascript/Interpreter.java
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@ -2190,20 +2190,22 @@ public class Interpreter extends LabelTable {
case TokenStream.UNDEFINED :
stack[++stackTop] = Undefined.instance;
break;
case TokenStream.THROW :
result = stack[stackTop];
if (result == DBL_MRK)
result = doubleWrap(sDbl[stackTop]);
case TokenStream.THROW : {
Object exception = stack[stackTop];
if (exception == DBL_MRK)
exception = doubleWrap(sDbl[stackTop]);
--stackTop;
throw new JavaScriptException(result);
case TokenStream.JTHROW :
result = stack[stackTop];
// No need to check for DBL_MRK: result is Exception
throw new JavaScriptException(exception);
}
case TokenStream.JTHROW : {
Object exception = stack[stackTop];
// No need to check for DBL_MRK: exception must be Exception
--stackTop;
if (result instanceof JavaScriptException)
throw (JavaScriptException)result;
if (exception instanceof JavaScriptException)
throw (JavaScriptException)exception;
else
throw (RuntimeException)result;
throw (RuntimeException)exception;
}
case TokenStream.ENTERWITH : {
Object lhs = stack[stackTop];
if (lhs == DBL_MRK) lhs = doubleWrap(sDbl[stackTop]);