1 files changed, 12 insertions, 0 deletions
diff --git a/gcc/testsuite/g++.dg/template/crash34.C b/gcc/testsuite/g++.dg/template/crash34.C
new file mode 100644
index 000000000..ef4d21b60
--- /dev/null
+++ b/gcc/testsuite/g++.dg/template/crash34.C
@@ -0,0 +1,12 @@
+// { dg-do compile }
+
+// PR c++/20028
+
+// We used to crash when referencing TYPE_SIZE_UNIT of the messed-up
+// type used for x, because it was not initialized.
+
+class Foo;
+
+template <typename T> class Foo { }; // { dg-error "not a template type" }
+
+Foo<int> x; // { dg-error "not a template|incomplete type" }