compiler: add calling Bfunction Backend::call_expression

    
    Pass in the calling (containing) Bfunction when invoking the Backend
    method call_expression(), so as to handle the case where generation of
    the call forces the creation of a temp var within the calling
    function.
    
    Reviewed-on: https://go-review.googlesource.com/43270

From-SVN: r247981

1 files changed, 6 insertions, 3 deletions

diff --git a/gcc/go/gofrontend/expressions.cc b/gcc/go/gofrontend/expressions.cc
index ecafe16..c5e9a0b 100644
--- a/gcc/go/gofrontend/expressions.cc
+++ b/gcc/go/gofrontend/expressions.cc
@@ -10290,13 +10290,16 @@ Call_expression::do_get_backend(Translate_context* context)
       bfn = gogo->backend()->convert_expression(bft, bfn, location);
     }
 
-  Bexpression* call = gogo->backend()->call_expression(bfn, fn_args,
-						       bclosure, location);
+  Bfunction* bfunction = NULL;
+  if (context->function())
+    bfunction = context->function()->func_value()->get_decl();
+  Bexpression* call = gogo->backend()->call_expression(bfunction, bfn,
+                                                       fn_args, bclosure,
+                                                       location);
 
   if (this->results_ != NULL)
     {
       Bexpression* bcall_ref = this->call_result_ref(context);
-      Bfunction* bfunction = context->function()->func_value()->get_decl();
       Bstatement* assn_stmt =
           gogo->backend()->assignment_statement(bfunction,
                                                 bcall_ref, call, location);