From: Richard Stallman <rms@gnu.org>
Date: Wed, 28 Jul 1993 17:45:51 +0000 (+0000)
Subject: (start_function): Warn if volatile fn returns non-void.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=6df4a7b923f9a6f71dd67f08061a4455caf301b7;p=gcc.git

(start_function): Warn if volatile fn returns non-void.

From-SVN: r5022
---

diff --git a/gcc/c-decl.c b/gcc/c-decl.c
index 896b5210329..b220cacae85 100644
--- a/gcc/c-decl.c
+++ b/gcc/c-decl.c
@@ -5648,6 +5648,10 @@ start_function (declspecs, declarator, nested)
 
   announce_function (decl1);
 
+  if (TREE_THIS_VOLATILE (decl)
+      && TREE_TYPE (decl) != void_type_node)
+    warning ("volatile function returns non-void value");
+
   if (TYPE_SIZE (TREE_TYPE (TREE_TYPE (decl1))) == 0)
     {
       error ("return-type is an incomplete type");