debug/101533 - ICE with variant typedef DIE generation

There's a sanity check in gen_type_die_with_usage that trips
unnecessarily for a case where the relevant DIE has already been
generated successfully in other ways.  The following keys the
existing TREE_ASM_WRITTEN check on the correct object, honoring
this and does nothing instead of ICEing for the testcase at hand.

	PR debug/101533
	* dwarf2out.cc (gen_type_die_with_usage): When we have
	output the typedef already do nothing for a typedef variant.
	Do not set TREE_ASM_WRITTEN on the type.

	* g++.dg/debug/pr101533.C: New testcase.

1 files changed, 11 insertions, 0 deletions

diff --git a/gcc/testsuite/g++.dg/debug/pr101533.C b/gcc/testsuite/g++.dg/debug/pr101533.C
new file mode 100644
index 0000000..fc1e2e7
--- /dev/null
+++ b/gcc/testsuite/g++.dg/debug/pr101533.C
@@ -0,0 +1,11 @@
+// { dg-do compile }
+// { dg-options "-g" }
+
+template <typename> class T
+{
+  typedef struct {} a __attribute__((aligned));
+};
+void f ()
+{
+  T<int>();
+}