There's a regression in the argument parsing code
of the HotSpot which leads to a segmentation fault if an -XX option
with an empty string argument (e.g. -XX:SyncKnobs= or
-XX:SyncKnobs="") is given on the command line.
The regression must have appeared somewhere in HS 11, because Java
1.6.0_06 (which contains HS 10.0_b22) doesn't show the problem while
both Java 1.6.0_10 (HS 11.0_b11) and Java 1.7.0-ea-b24 (HS 12.0_b01)
as well as the latest OpenJDK snapshot (Rev. 292 with tag jdk7-b34)