[Truffle] Complain when running with an incompatible Graal version. #3311
+7
−0
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@chrisseaton What should we do?
In the particular case of 0.8, there was no warning before this, and the program would run like on a stock JDK (because truffle is not on the bootclasspath I suppose).
We should probably also make the requirement of Graal 0.7 clearer in the wiki/README.