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8058575: IllegalAccessError trying to access package-private class from VM anonymous class

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Put anonymous classes in unnamed package into host class's package.  Throw exception if host class's package differs from anonymous class.

Reviewed-by: coleenp, acorn
This commit is contained in:
Harold Seigel 2016-09-07 07:19:48 -04:00
parent c271d83599
commit e8e6415b7a
14 changed files with 416 additions and 31 deletions
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10
hotspot/src/share/vm/runtime/reflection.cpp
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@ -412,13 +412,13 @@ oop Reflection::array_component_type(oop mirror, TRAPS) {
return result;
}
static bool under_host_klass(const InstanceKlass* ik, const Klass* host_klass) {
static bool under_host_klass(const InstanceKlass* ik, const InstanceKlass* host_klass) {
DEBUG_ONLY(int inf_loop_check = 1000 * 1000 * 1000);
for (;;) {
const Klass* hc = (const Klass*)ik->host_klass();
const InstanceKlass* hc = ik->host_klass();
if (hc == NULL) return false;
if (hc == host_klass) return true;
ik = InstanceKlass::cast(hc);
ik = hc;
// There's no way to make a host class loop short of patching memory.
// Therefore there cannot be a loop here unless there's another bug.
@ -436,8 +436,8 @@ static bool can_relax_access_check_for(const Klass* accessor,
// If either is on the other's host_klass chain, access is OK,
// because one is inside the other.
if (under_host_klass(accessor_ik, accessee) ||
under_host_klass(accessee_ik, accessor))
if (under_host_klass(accessor_ik, accessee_ik) ||
under_host_klass(accessee_ik, accessor_ik))
return true;
if ((RelaxAccessControlCheck &&