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8214807: Improve handling of very old class files

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Remove old version specific code in reflection.cpp

Reviewed-by: acorn, dholmes
This commit is contained in:
Harold Seigel 2018-12-06 09:58:26 -05:00
parent 528361f7ae
commit 145582dfa1
3 changed files with 2 additions and 10 deletions
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1
src/hotspot/share/classfile/verifier.hpp
View File

@ -36,7 +36,6 @@
class Verifier : AllStatic {
public:
enum {
STRICTER_ACCESS_CTRL_CHECK_VERSION = 49,
STACKMAP_ATTRIBUTE_MAJOR_VERSION = 50,
INVOKEDYNAMIC_MAJOR_VERSION = 51,
NO_RELAX_ACCESS_CTRL_CHECK_VERSION = 52,

6
src/hotspot/share/runtime/reflection.cpp
View File

@ -417,11 +417,9 @@ static bool can_relax_access_check_for(const Klass* accessor,
under_unsafe_anonymous_host(accessee_ik, accessor_ik))
return true;
if ((RelaxAccessControlCheck &&
if (RelaxAccessControlCheck &&
accessor_ik->major_version() < Verifier::NO_RELAX_ACCESS_CTRL_CHECK_VERSION &&
accessee_ik->major_version() < Verifier::NO_RELAX_ACCESS_CTRL_CHECK_VERSION) ||
(accessor_ik->major_version() < Verifier::STRICTER_ACCESS_CTRL_CHECK_VERSION &&
accessee_ik->major_version() < Verifier::STRICTER_ACCESS_CTRL_CHECK_VERSION)) {
accessee_ik->major_version() < Verifier::NO_RELAX_ACCESS_CTRL_CHECK_VERSION) {
return classloader_only &&
Verifier::relax_access_for(accessor_ik->class_loader()) &&
accessor_ik->protection_domain() == accessee_ik->protection_domain() &&

5
src/java.base/share/man/java.1
View File

@ -1396,11 +1396,6 @@ Enables printing of collected native memory tracking data at JVM exit when nativ
\fB\-XX:NativeMemoryTracking\fR)\&. By default, this option is disabled and native memory tracking data is not printed\&.
.RE
.PP
\-XX:+RelaxAccessControlCheck
.RS 4
Decreases the amount of access control checks in the verifier\&. By default, this option is disabled, and it is ignored (that is, treated as disabled) for classes with a recent bytecode version\&. You can enable it for classes with older versions of the bytecode\&.
.RE
.PP
\-XX:+ShowMessageBoxOnError
.RS 4
Enables displaying of a dialog box when the JVM experiences an irrecoverable error\&. This prevents the JVM from exiting and keeps the process active so that you can attach a debugger to it to investigate the cause of the error\&. By default, this option is disabled\&.