From 533007c1e9280941228e1a499cf5747d22d2b7ee Mon Sep 17 00:00:00 2001
From: Jason Merrill <jason@redhat.com>
Date: Thu, 27 Sep 2007 14:54:06 -0400
Subject: [PATCH] decl2.c (is_late_template_attribute): Don't crash on unknown
 attribute.

        * decl2.c (is_late_template_attribute): Don't crash on unknown
        attribute.

From-SVN: r128844
---
 gcc/cp/ChangeLog                     |  5 +++++
 gcc/cp/decl2.c                       |  4 ++++
 gcc/testsuite/g++.dg/ext/tmplattr6.C | 12 ++++++++++++
 3 files changed, 21 insertions(+)
 create mode 100644 gcc/testsuite/g++.dg/ext/tmplattr6.C

diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index f459c54ae59..a0e259c93c0 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,8 @@
+2007-09-27  Jason Merrill  <jason@redhat.com>
+
+	* decl2.c (is_late_template_attribute): Don't crash on unknown
+	attribute.
+
 2007-09-27  Paolo Carlini  <pcarlini@suse.de>
 
 	PR c++/33493
diff --git a/gcc/cp/decl2.c b/gcc/cp/decl2.c
index d58194265db..c00c9796a1e 100644
--- a/gcc/cp/decl2.c
+++ b/gcc/cp/decl2.c
@@ -986,6 +986,10 @@ is_late_template_attribute (tree attr, tree decl)
   tree args = TREE_VALUE (attr);
   const struct attribute_spec *spec = lookup_attribute_spec (name);
 
+  if (!spec)
+    /* Unknown attribute.  */
+    return false;
+
   if (is_attribute_p ("aligned", name)
       && args
       && value_dependent_expression_p (TREE_VALUE (args)))
diff --git a/gcc/testsuite/g++.dg/ext/tmplattr6.C b/gcc/testsuite/g++.dg/ext/tmplattr6.C
new file mode 100644
index 00000000000..17f23fe3493
--- /dev/null
+++ b/gcc/testsuite/g++.dg/ext/tmplattr6.C
@@ -0,0 +1,12 @@
+// Don't crash on an unknown attribute.
+
+struct foo {
+  template <class T>
+  void __attribute__((leafify)) bar() {} // { dg-warning "ignored" }
+};
+
+void bar(void)
+{
+  foo f;
+  f.bar<int>();
+}
-- 
2.30.2