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Patch for Bryan - 182719 - Prevents a potential stack overflow error with virtual base classes.

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This commit is contained in:
Doug Schaefer 2007-04-17 18:21:51 +00:00
parent a59c16a63a
commit fce61429ce
1 changed files with 27 additions and 23 deletions
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50
core/org.eclipse.cdt.core/parser/org/eclipse/cdt/internal/core/dom/parser/cpp/CPPSemantics.java
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@ -1294,33 +1294,37 @@ public class CPPSemantics {
return result;
}
public static void visitVirtualBaseClasses( LookupData data, ICPPClassType cls ){
ICPPBase [] bases = null;
try {
bases = cls.getBases();
} catch ( DOMException e ) {
return;
}
public static void visitVirtualBaseClasses( LookupData data, ICPPClassType cls ) throws DOMException {
if( data.inheritanceChain == null )
data.inheritanceChain = new ObjectSet( 2 );
IScope scope = cls.getCompositeScope();
if (scope != null)
data.inheritanceChain.put( scope );
ICPPBase [] bases = cls.getBases();
for( int i = 0; i < bases.length; i++ ){
try {
if( bases[i].isVirtual() ){
if( data.visited == ObjectSet.EMPTY_SET )
data.visited = new ObjectSet(2);
IBinding b = bases[i].getBaseClass();
if( b instanceof ICPPClassType ) {
IScope bScope = ((ICPPClassType)b).getCompositeScope();
if (bScope != null)
data.visited.put(bScope);
}
} else {
IBinding b = bases[i].getBaseClass();
if( b instanceof ICPPClassType )
visitVirtualBaseClasses( data, (ICPPClassType) b );
}
} catch ( DOMException e1 ) {
IBinding b = bases[i].getBaseClass();
if (b instanceof ICPPClassType) {
IScope bScope = ((ICPPClassType)b).getCompositeScope();
if( bases[i].isVirtual() ){
if( data.visited == ObjectSet.EMPTY_SET )
data.visited = new ObjectSet(2);
if (bScope != null)
data.visited.put(bScope);
} else if ( !data.inheritanceChain.containsKey(bScope) ) {
visitVirtualBaseClasses( data, (ICPPClassType) b );
} else {
data.problem = new ProblemBinding( null, IProblemBinding.SEMANTIC_CIRCULAR_INHERITANCE, cls.getNameCharArray() );
}
}
}
if (scope != null)
data.inheritanceChain.remove( scope );
}
private static boolean checkForAmbiguity( LookupData data, Object n, Object names ) throws DOMException{
if( names instanceof Object[] ) {
names = ArrayUtil.trim( Object.class, (Object[]) names );