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8055906: Avoid throwing an exception with filled in stack trace as part of the normal control flow

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Reviewed-by: attila, hannesw
This commit is contained in:
Marcus Lagergren 2014-08-26 11:42:07 +02:00
parent 8525a0f5b5
commit e533964fc8
1 changed files with 10 additions and 1 deletions
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11
nashorn/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/codegen/ApplySpecialization.java
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@ -35,6 +35,7 @@ import java.util.Deque;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import jdk.nashorn.internal.ir.AccessNode;
import jdk.nashorn.internal.ir.CallNode;
import jdk.nashorn.internal.ir.Expression;
@ -127,6 +128,14 @@ public final class ApplySpecialization extends NodeVisitor<LexicalContext> imple
*/
private boolean argumentsEscape(final FunctionNode functionNode) {
@SuppressWarnings("serial")
final UnsupportedOperationException uoe = new UnsupportedOperationException() {
@Override
public Throwable fillInStackTrace() {
return null;
}
};
final Deque<Set<Expression>> stack = new ArrayDeque<>();
//ensure that arguments is only passed as arg to apply
try {
@ -151,7 +160,7 @@ public final class ApplySpecialization extends NodeVisitor<LexicalContext> imple
@Override
public Node leaveIdentNode(final IdentNode identNode) {
if (isParam(identNode.getName()) || ARGUMENTS.equals(identNode.getName()) && !isCurrentArg(identNode)) {
throw new UnsupportedOperationException();
throw uoe; //avoid filling in stack trace
}
return identNode;
}