Go patch RFA: Fix taking the address of a field of a local variable

[Ian Lance Taylor]

This patch to the Go compiler fixes the case of taking the address of a
field of a local variable.  Previously taking the address of the field
was not treated as taking the address of the variable.  But, of course,
it is.  This patch fixes the problem.  Bootstrapped and ran Go testsuite
on x86_64-unknown-linux-gnu.  Committed to mainline.

OK for 4.7 branch?  This is a real bug, bad runtime code generated for
valid Go code.

Ian


diff -r 784c72ffe147 go/expressions.h
--- a/go/expressions.h	Wed Jun 06 23:30:08 2012 -0700
+++ b/go/expressions.h	Thu Jun 07 01:03:20 2012 -0700
@@ -1888,6 +1888,10 @@
   do_is_addressable() const
   { return this->expr_->is_addressable(); }
 
+  void
+  do_address_taken(bool escapes)
+  { this->expr_->address_taken(escapes); }
+
   tree
   do_get_tree(Translate_context*);