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C++ PATCH for c++/60248 (ICE with variadic template)

Message ID 53075ECE.9040904@redhat.com
State New
Headers show

Commit Message

Jason Merrill Feb. 21, 2014, 2:12 p.m. UTC 
mangle_decl shouldn't try to make a forward-compatibility alias for a 
TYPE_DECL, since they don't have symbols.

Tested x86_64-pc-linux-gnu, applying to trunk, 4.7, 4.8.
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Patch

commit 8d40d9322f567ba5720ac807168232ae3c5ee0e4
Author: Jason Merrill <jason@redhat.com>
Date:   Fri Feb 21 00:39:25 2014 -0500

    	PR c++/60248
    	* mangle.c (mangle_decl): Don't make an alias for a TYPE_DECL.

diff --git a/gcc/cp/mangle.c b/gcc/cp/mangle.c
index 7bb6f4b..251edb1 100644
--- a/gcc/cp/mangle.c
+++ b/gcc/cp/mangle.c
@@ -3485,6 +3485,7 @@  mangle_decl (const tree decl)
 
   if (G.need_abi_warning
       /* Don't do this for a fake symbol we aren't going to emit anyway.  */
+      && TREE_CODE (decl) != TYPE_DECL
       && !DECL_MAYBE_IN_CHARGE_CONSTRUCTOR_P (decl)
       && !DECL_MAYBE_IN_CHARGE_DESTRUCTOR_P (decl))
     {
diff --git a/gcc/testsuite/g++.dg/cpp0x/variadic149.C b/gcc/testsuite/g++.dg/cpp0x/variadic149.C
new file mode 100644
index 0000000..a250e7c
--- /dev/null
+++ b/gcc/testsuite/g++.dg/cpp0x/variadic149.C
@@ -0,0 +1,11 @@ 
+// PR c++/60248
+// { dg-options "-std=c++11 -g -fabi-version=2" }
+
+template<int...> struct A {};
+
+template<> struct A<0>
+{
+  typedef enum { e } B;
+};
+
+A<0> a;