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6870851: Bad frame_chop in StackMapTable crashes JVM

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Must check locals for null when processing chop frame

Reviewed-by: dholmes, dcubed
This commit is contained in:
Keith McGuigan 2010-09-03 14:47:05 -04:00
parent 5d5bcb4bca
commit c5ccd42ac0
1 changed files with 2 additions and 1 deletions
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3
hotspot/src/share/vm/classfile/stackMapTable.cpp
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@ -1,5 +1,5 @@
/* /*
* Copyright (c) 2003, 2006, Oracle and/or its affiliates. All rights reserved. * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
* *
* This code is free software; you can redistribute it and/or modify it * This code is free software; you can redistribute it and/or modify it
@ -152,6 +152,7 @@ void StackMapTable::print() const {
int32_t StackMapReader::chop( int32_t StackMapReader::chop(
VerificationType* locals, int32_t length, int32_t chops) { VerificationType* locals, int32_t length, int32_t chops) {
if (locals == NULL) return -1;
int32_t pos = length - 1; int32_t pos = length - 1;
for (int32_t i=0; i<chops; i++) { for (int32_t i=0; i<chops; i++) {
if (locals[pos].is_category2_2nd()) { if (locals[pos].is_category2_2nd()) {