[pypy-commit] pypy translation-cleanup: Flowspacify STORE_GLOBAL

[rlamy]

Author: Ronan Lamy <ronan.lamy at gmail.com>
Branch: translation-cleanup
Changeset: r58139:f790da70aa4e
Date: 2012-10-16 15:18 +0100
http://bitbucket.org/pypy/pypy/changeset/f790da70aa4e/

Log:	Flowspacify STORE_GLOBAL

diff --git a/pypy/objspace/flow/flowcontext.py b/pypy/objspace/flow/flowcontext.py
--- a/pypy/objspace/flow/flowcontext.py
+++ b/pypy/objspace/flow/flowcontext.py
@@ -759,6 +759,11 @@
         assert w_newvalue is not None
         self.locals_stack_w[varindex] = w_newvalue
 
+    def STORE_GLOBAL(self, nameindex, next_instr):
+        varname = self.getname_u(nameindex)
+        raise FlowingError(self,
+                "Attempting to modify global variable  %r." % (varname))
+
     def BUILD_LIST_FROM_ARG(self, _, next_instr):
         # This opcode was added with pypy-1.8.  Here is a simpler
         # version, enough for annotation.