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8000623: tools/javac/Diagnostics/6769027/T6769027.java crashes in PSPromotionManager::copy_to_survivor_space

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Fix type of method pointer load from vtable.

Reviewed-by: twisti, johnc, roland
This commit is contained in:
Vladimir Kozlov 2012-10-17 12:09:32 -07:00
parent 515f1281e1
commit 2d3b78abcc
3 changed files with 3 additions and 3 deletions
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2
hotspot/src/share/vm/opto/compile.cpp
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@ -3047,9 +3047,9 @@ bool Compile::Constant::operator==(const Constant& other) {
case T_LONG:
case T_DOUBLE: return (_v._value.j == other._v._value.j);
case T_OBJECT:
case T_METADATA: return (_v._metadata == other._v._metadata);
case T_ADDRESS: return (_v._value.l == other._v._value.l);
case T_VOID: return (_v._value.l == other._v._value.l); // jump-table entries
case T_METADATA: return (_v._metadata == other._v._metadata);
default: ShouldNotReachHere();
}
return false;

2
hotspot/src/share/vm/opto/compile.hpp
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@ -149,7 +149,7 @@ class Compile : public Phase {
private:
BasicType _type;
union {
jvalue _value;
jvalue _value;
Metadata* _metadata;
} _v;
int _offset; // offset of this constant (in bytes) relative to the constant table base.

2
hotspot/src/share/vm/opto/library_call.cpp
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@ -3830,7 +3830,7 @@ Node* LibraryCallKit::generate_virtual_guard(Node* obj_klass,
vtable_index*vtableEntry::size()) * wordSize +
vtableEntry::method_offset_in_bytes();
Node* entry_addr = basic_plus_adr(obj_klass, entry_offset);
Node* target_call = make_load(NULL, entry_addr, TypeInstPtr::NOTNULL, T_OBJECT);
Node* target_call = make_load(NULL, entry_addr, TypePtr::NOTNULL, T_ADDRESS);
// Compare the target method with the expected method (e.g., Object.hashCode).
const TypePtr* native_call_addr = TypeMetadataPtr::make(method);