src/share/vm/opto/subnode.cpp
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rev 4505 : 8014189: JVM crash with SEGV in ConnectionGraph::record_for_escape_analysis()
Summary: Add NULL checks and asserts for Type::make_ptr() returned value.
Reviewed-by: kvn
@@ -863,14 +863,15 @@
const Type *CmpNNode::sub( const Type *t1, const Type *t2 ) const {
const TypePtr *r0 = t1->make_ptr(); // Handy access
const TypePtr *r1 = t2->make_ptr();
// Undefined inputs makes for an undefined result
- if( TypePtr::above_centerline(r0->_ptr) ||
- TypePtr::above_centerline(r1->_ptr) )
+ if ((r0 == NULL) || (r1 == NULL) ||
+ TypePtr::above_centerline(r0->_ptr) ||
+ TypePtr::above_centerline(r1->_ptr)) {
return Type::TOP;
-
+ }
if (r0 == r1 && r0->singleton()) {
// Equal pointer constants (klasses, nulls, etc.)
return TypeInt::CC_EQ;
}