From ebccb65d5a5a9dbeffbba9824cd2c4fbfdd684a6 Mon Sep 17 00:00:00 2001
From: Joseph Myers <joseph@codesourcery.com>
Date: Fri, 22 Apr 2005 11:15:09 +0100
Subject: [PATCH] varasm.c (do_assemble_alias): Return early if
 TREE_ASM_WRITTEN (decl).

	* varasm.c (do_assemble_alias): Return early if TREE_ASM_WRITTEN
	(decl).

testsuite:
	* gcc.dg/weak/weak-13.c: New test.

From-SVN: r98551
---
 gcc/ChangeLog                       |  5 +++++
 gcc/testsuite/ChangeLog             |  4 ++++
 gcc/testsuite/gcc.dg/weak/weak-13.c | 13 +++++++++++++
 gcc/varasm.c                        |  3 +++
 4 files changed, 25 insertions(+)
 create mode 100644 gcc/testsuite/gcc.dg/weak/weak-13.c

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index d6dd395..c2ac0f4 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2005-04-22  Joseph S. Myers  <joseph@codesourcery.com>
+
+	* varasm.c (do_assemble_alias): Return early if TREE_ASM_WRITTEN
+	(decl).
+
 2005-04-22  Nathan Sidwell  <nathan@codesourcery.com>
 
 	* config/i386/i386.md (length_immediate): Use gcc_assert or
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 61c9bf8..c55ee24 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2005-04-22  Joseph S. Myers  <joseph@codesourcery.com>
+
+	* gcc.dg/weak/weak-13.c: New test.
+
 2005-04-21  Geoffrey Keating  <geoffk@apple.com>
 
 	* lib/target-supports.exp (check_effective_target_sync_int_long):
diff --git a/gcc/testsuite/gcc.dg/weak/weak-13.c b/gcc/testsuite/gcc.dg/weak/weak-13.c
new file mode 100644
index 0000000..15106a5
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/weak/weak-13.c
@@ -0,0 +1,13 @@
+/* Test for weak aliases with multiple declarations.  Sun assembler
+   rejects multiple weak alias definitions in the output.  */
+/* { dg-do assemble } */
+/* { dg-require-weak "" } */
+/* { dg-require-alias "" } */
+/* { dg-options "" } */
+
+#pragma weak foo = _foo
+
+extern int foo;
+extern int foo;
+
+int _foo = 4;
diff --git a/gcc/varasm.c b/gcc/varasm.c
index 832b55b..a3aa44a 100644
--- a/gcc/varasm.c
+++ b/gcc/varasm.c
@@ -4486,6 +4486,9 @@ find_decl_and_mark_needed (tree decl, tree target)
 static void
 do_assemble_alias (tree decl, tree target ATTRIBUTE_UNUSED)
 {
+  if (TREE_ASM_WRITTEN (decl))
+    return;
+
   TREE_ASM_WRITTEN (decl) = 1;
   TREE_ASM_WRITTEN (DECL_ASSEMBLER_NAME (decl)) = 1;
 
-- 
2.7.4