The undocumented -XXaltjvm option does not work.

# java Hello
Hello
# java -client Hello
Hello
# java -server Hello
Hello
# java -XXaltjvm=client Hello

An unexpected exception has been detected in native code outside the VM.
Unexpected Signal : 11 occurred at PC=0xFF232E5C
Function=strlen+0x80
Library=/usr/lib/libc.so.1
...