Eliot Miranda uploaded a new version of Compiler to project The Trunk:
http://source.squeak.org/trunk/Compiler-eem.334.mcz

==================== Summary ====================

Name: Compiler-eem.334
Author: eem
Time: 30 March 2017, 4:39:24.385576 pm
UUID: 8bbbbea5-2e6c-4f7a-bf75-1d81c534cc5d
Ancestors: Compiler-eem.333

Oops.  Fix the regression due to over zealous removal of obsolete closure copde.  It helps to keep the code still in use <gulp>.

=============== Diff against Compiler-eem.333 ===============

Item was added:
+ ----- Method: Decompiler>>checkForBlock:selector:arguments: (in category 'control') -----
+ checkForBlock: receiver selector: selector arguments: arguments
+ 	^self checkForClosureCopy: receiver arguments: arguments!