1 files changed, 21 insertions, 0 deletions
diff --git a/tools/conf_tests/can_use_dynamic_cast_in_unused_template_wo_def.cc b/tools/conf_tests/can_use_dynamic_cast_in_unused_template_wo_def.cc
new file mode 100644
index 00000000..9620d80c
--- /dev/null
+++ b/tools/conf_tests/can_use_dynamic_cast_in_unused_template_wo_def.cc
@@ -0,0 +1,21 @@
+// Configuration-time test program, used in Meson build.
+// Check whether the compiler allows us to define a template that uses
+// dynamic_cast<> with an object whose type is not defined, even if we do
+// not use that template before we have defined the type. This should
+// probably not be allowed anyway.
+// Corresponds to the M4 macro GLIBMM_CXX_CAN_USE_DYNAMIC_CAST_IN_UNUSED_TEMPLATE_WITHOUT_DEFINITION.
+
+class SomeClass;
+
+SomeClass* some_function();
+
+template <class T>
+class SomeTemplate
+{
+  static bool do_something()
+  {
+    // This does not compile with the MipsPro (IRIX) compiler
+    // even if we don't use this template at all.
+    return (dynamic_cast<T*>(some_function()) != 0);
+  }
+};