From: Martin v. Löwis <loewis@informatik.hu-berlin.de>
Date: Mon, 25 Jan 1999 16:09:05 +0000 (+0000)
Subject: tree.c (equal_functions): New function.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=89ae2c8c42affa24d6630e80558841968eb8f2b9;p=gcc.git

tree.c (equal_functions): New function.

	* tree.c (equal_functions): New function.
	(ovl_member): Call it.

From-SVN: r24861
---

diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index 443c5de67e3..95e47671489 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,8 @@
+1999-01-25  Martin von Löwis  <loewis@informatik.hu-berlin.de>
+
+	* tree.c (equal_functions): New function.
+	(ovl_member): Call it.
+
 1999-01-24  Jason Merrill  <jason@yorick.cygnus.com>
 
 	* cvt.c (cp_convert_to_pointer): Fix conversion of 0 to pmf.
diff --git a/gcc/cp/tree.c b/gcc/cp/tree.c
index 656cc52d036..d318d1be988 100644
--- a/gcc/cp/tree.c
+++ b/gcc/cp/tree.c
@@ -41,6 +41,7 @@ static tree list_hash_lookup PROTO((int, int, int, int, tree, tree,
 static void propagate_binfo_offsets PROTO((tree, tree));
 static int avoid_overlap PROTO((tree, tree));
 static int lvalue_p_1 PROTO((tree, int));
+static int equal_function PROTO((tree, tree));
 
 #define CEIL(x,y) (((x) + (y) - 1) / (y))
 
@@ -1395,6 +1396,20 @@ build_overload (decl, chain)
   return ovl_cons (decl, chain);
 }
 
+/* Returns true iff functions are equivalent. Equivalent functions are
+   not identical only if one is a function-local extern function.
+   This assumes that function-locals don't have TREE_PERMANENT.  */
+
+static int
+equal_functions (fn1, fn2)
+     tree fn1;
+     tree fn2;
+{
+  if (!TREE_PERMANENT (fn1) || !TREE_PERMANENT (fn2))
+    return decls_match (fn1, fn2);
+  return fn1 == fn2;
+}
+
 /* True if fn is in ovl. */
 
 int
@@ -1405,9 +1420,9 @@ ovl_member (fn, ovl)
   if (ovl == NULL_TREE)
     return 0;
   if (TREE_CODE (ovl) != OVERLOAD)
-    return decls_match (ovl, fn);
+    return equal_functions (ovl, fn);
   for (; ovl; ovl = OVL_CHAIN (ovl))
-    if (decls_match (OVL_FUNCTION (ovl), fn))
+    if (equal_functions (OVL_FUNCTION (ovl), fn))
       return 1;
   return 0;
 }