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More robust infinite recursion protection in CompositeValue.create

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Change-Id: Ic0303db73c19651d341f84748b87efc9868defc4
This commit is contained in:
Sergey Prigogin 2017-03-01 17:41:12 -08:00
parent 5a71bf21d8
commit f311c6f050
1 changed files with 11 additions and 6 deletions
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13
core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/CompositeValue.java
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@ -8,8 +8,8 @@
*******************************************************************************/
package org.eclipse.cdt.internal.core.dom.parser;
import java.util.HashSet;
import java.util.Set;
import java.util.TreeSet;
import org.eclipse.cdt.core.CCorePlugin;
import org.eclipse.cdt.core.dom.ast.ASTTypeUtil;
@ -157,12 +157,16 @@ public final class CompositeValue implements IValue {
}
// The set of class types for which composite value creation is in progress on each thread.
// Used to guard against infinite recursion due to a class (invalidly) aggregating itself.
// Used to guard against infinite recursion due to a class (illegally) aggregating itself.
private static final ThreadLocal<Set<ICPPClassType>> fCreateInProgress =
new ThreadLocal<Set<ICPPClassType>>() {
@Override
protected Set<ICPPClassType> initialValue() {
return new HashSet<>();
return new TreeSet<>((type1, type2) -> {
if (type1.isSameType(type2))
return 0;
return ASTTypeUtil.getType(type1, true).compareTo(ASTTypeUtil.getType(type2, true));
});
}
};
@ -185,10 +189,11 @@ public final class CompositeValue implements IValue {
if (!recursionProtectionSet.add(classType)) {
return new CompositeValue(null, ICPPEvaluation.EMPTY_ARRAY);
}
try {
if (sDEBUG && nestingLevel > 0) {
System.out.println("CompositeValue.create(" + ASTTypeUtil.getType(classType) + ", " + nestingLevel + ")"); //$NON-NLS-1$//$NON-NLS-2$ //$NON-NLS-3$
System.out.flush();
}
try {
ActivationRecord record = new ActivationRecord();
ICPPEvaluation[] values = new ICPPEvaluation[ClassTypeHelper.getFields(classType, point).length];