From 1c1ca0a5e7c6ba9427db3d24167545d5cada9085 Mon Sep 17 00:00:00 2001
From: Tristan Gingold <tgingold@free.fr>
Date: Thu, 2 Nov 2017 04:55:10 +0100
Subject: gcc-7: fix crash due to alias_set.

---
 src/ortho/gcc/ortho-lang-7.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'src/ortho')

diff --git a/src/ortho/gcc/ortho-lang-7.c b/src/ortho/gcc/ortho-lang-7.c
index d378a2a3e..28df56c07 100644
--- a/src/ortho/gcc/ortho-lang-7.c
+++ b/src/ortho/gcc/ortho-lang-7.c
@@ -575,6 +575,15 @@ ortho_truthvalue_conversion (tree expr)
     }
 }
 
+/* Do not deal with alias set.  In particular, it doesn't work well with
+   incomplete type, and universal pointers are not expressed in ortho.  */
+
+static alias_set_type
+ortho_get_alias_set (tree type)
+{
+  return 0;
+}
+
 /* The following function has been copied and modified from c-convert.c.  */
 
 /* Change of width--truncation and extension of integers or reals--
@@ -746,6 +755,9 @@ type_for_mode (enum machine_mode mode, int unsignedp)
 #undef LANG_HOOKS_GETDECLS
 #define LANG_HOOKS_GETDECLS hook_tree_void_null
 
+#undef  LANG_HOOKS_GET_ALIAS_SET
+#define LANG_HOOKS_GET_ALIAS_SET ortho_get_alias_set
+
 struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
 
 union GTY((desc ("0"),
-- 
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