From b1c3d5f907a567f03e4efaecd4728a3ca888bde5 Mon Sep 17 00:00:00 2001
From: Tristan Gingold <tgingold@free.fr>
Date: Sun, 21 May 2017 18:52:03 +0200
Subject: Avoid a crash when a subtype indication is found within an
 expression.

Fix #351
---
 src/vhdl/sem_names.adb | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/vhdl/sem_names.adb b/src/vhdl/sem_names.adb
index 9b1c22050..13e96c4e7 100644
--- a/src/vhdl/sem_names.adb
+++ b/src/vhdl/sem_names.adb
@@ -1300,6 +1300,11 @@ package body Sem_Names is
             Error_Msg_Sem
               (+Actual, "%n cannot be a type conversion operand", +Actual);
             return Conv;
+         when Iir_Kind_Range_Expression =>
+            --  Try to nicely handle expression like NAME (A to B).
+            Error_Msg_Sem
+              (+Actual, "subtype indication not allowed in an expression");
+            return Conv;
          when others =>
             -- LRM93 7.3.5
             -- The type of the operand of a type conversion must be
-- 
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