question: private static Address GetStringUTFChars ( JNIEnvironment env , int strJREF , Address isCopyAddress ) { if ( traceJNI ) VM . sysWrite ( "JNI called: GetStringUTFChars  \n" ) ; RuntimeEntrypoints . checkJNICountDownToGC ( ) ; String str = ( String ) env . getJNIRef ( strJREF ) ; if ( str == null ) { return Address . zero ( ) ; } int len = UTF8Convert . utfLength ( str ) + 1 ; Address copyBuffer = sysCall . sysMalloc ( len ) ; if ( copyBuffer . isZero ( ) ) { env . recordException ( new OutOfMemoryError ( ) ) ; return Address . zero ( ) ; } try { JNIGenericHelpers . createUTFForCFromString ( str , copyBuffer , len ) ; JNIGenericHelpers . setBoolStar ( isCopyAddress , true ) ; return copyBuffer ; } catch ( Throwable unexpected ) { if ( traceJNI ) unexpected . printStackTrace ( System . err ) ; env . recordException ( unexpected ) ; return Address . zero ( ) ; } }
target:  GetStringUTFChars:  return address of buffer containing contents of a String