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7166955: (pack200) JNI_GetCreatedJavaVMs needs additional checking

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Reviewed-by: alanb, dholmes, ksrini
This commit is contained in:
Deven You 2012-05-09 07:28:12 -07:00 committed by Kumar Srinivasan
parent 7befd87c21
commit 35e44803db
1 changed files with 6 additions and 2 deletions
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8
jdk/src/share/native/com/sun/java/util/jar/pack/jni.cpp
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2003, 2008, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -82,7 +82,11 @@ static unpacker* get_unpacker(JNIEnv *env, jobject pObj, bool noCreate=false) {
static unpacker* get_unpacker() {
//fprintf(stderr, "get_unpacker()\n");
JavaVM* vm = null;
JNI_GetCreatedJavaVMs(&vm, 1, null);
jsize nVM = 0;
jint retval = JNI_GetCreatedJavaVMs(&vm, 1, &nVM);
// other VM implements may differ, thus for correctness, we need these checks
if (retval != JNI_OK || nVM != 1)
return null;
void* envRaw = null;
vm->GetEnv(&envRaw, JNI_VERSION_1_1);
JNIEnv* env = (JNIEnv*) envRaw;