@@ -792,14 +792,17 @@ poplevel (int keep, int reverse, int functionbody)
back ends won't understand OVERLOAD, so we remove them here.
Because the BLOCK_VARS are (temporarily) shared with
CURRENT_BINDING_LEVEL->NAMES we must do this fixup after we have
- popped all the bindings. */
+ popped all the bindings. Also remove undeduced 'auto' decls,
+ which LTO doesn't understand, and can't have been used by anything. */
if (block)
{
tree* d;
for (d = &BLOCK_VARS (block); *d; )
{
- if (TREE_CODE (*d) == TREE_LIST)
+ if (TREE_CODE (*d) == TREE_LIST
+ || (!processing_template_decl
+ && undeduced_auto_decl (*d)))
*d = TREE_CHAIN (*d);
else
d = &DECL_CHAIN (*d);
new file mode 100644
@@ -0,0 +1,7 @@
+// PR c++/79050
+// { dg-lto-do assemble }
+
+int main ()
+{
+ auto foo ();
+}