Better auto function name if we call var.eval().

theano/compile/function.py

@@ -195,8 +195,12 @@ def function(inputs, outputs=None, mode=None, updates=None, givens=None,
         last_frame = stack[idx]
         if (last_frame[0] == source_file or last_frame[0] == compiled_file):
             func_frame = stack[idx - 1]
+            while "theano/gof" in func_frame[0] and idx > 0:
+                idx -= 1
+                # This can hapen if we call var.eval()
+                func_frame = stack[idx - 1]
             name = func_frame[0] + ':' + str(func_frame[1])
-        
+
     if updates is None:
         updates = []