JDK-6539281 : -Xcheck:jni should validate char* argument to ReleaseStringUTFChars
- Type: Enhancement
- Component: hotspot
- Sub-Component: runtime
- Affected Version: 7
- Priority: P4
- Status: Closed
- Resolution: Fixed
- OS: generic
- CPU: generic
- Submitted: 2007-03-27
- Updated: 2013-02-21
- Resolved: 2011-03-08
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| JDK 6 | JDK 7 | Other |
|---|---|---|
6u25Fixed  |
7Fixed |
hs20Fixed |
Related Reports
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Description
jni_ReleaseStringUTFChars(JNIEnv *, jstring, const char *) frees the storage associated with the third argument by calling FreeHeap(). Under -Xcheck:jni, we should consider verifying that the C string was in fact allocated by GetStringUTFChars. This could be accomplished by allocating an extra byte or two in the checked version of GetSringUTFChars (immediately before the user pointer) and storing a magic value there, which would be verified in the subsequent Release call.
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