1 files changed, 27 insertions, 0 deletions
diff --git a/gcc/testsuite/gdc.test/fail_compilation/fail18093.d b/gcc/testsuite/gdc.test/fail_compilation/fail18093.d
new file mode 100644
index 00000000000..4eb3663afc6
--- /dev/null
+++ b/gcc/testsuite/gdc.test/fail_compilation/fail18093.d
@@ -0,0 +1,27 @@
+/* TEST_OUTPUT:
+---
+fail_compilation/fail18093.d(19): Error: function `void fail18093.GenericTransitiveVisitor!(ASTCodegen).GenericTransitiveVisitor.ParseVisitMethods!(ASTCodegen).visit()` does not override any function, did you mean to override `extern (C++) void fail18093.ParseTimeVisitor!(ASTCodegen).ParseTimeVisitor.visit()`?
+fail_compilation/fail18093.d(24): Error: mixin `fail18093.GenericTransitiveVisitor!(ASTCodegen).GenericTransitiveVisitor.ParseVisitMethods!(ASTCodegen)` error instantiating
+fail_compilation/fail18093.d(27): Error: template instance `fail18093.GenericTransitiveVisitor!(ASTCodegen)` error instantiating
+---
+ * https://issues.dlang.org/show_bug.cgi?id=18093
+ */
+
+
+struct ASTCodegen {}
+
+extern (C++) class ParseTimeVisitor(AST)
+{
+    void visit() {}
+}
+template ParseVisitMethods(AST)
+{
+    override void visit() {}
+}
+
+class GenericTransitiveVisitor(AST) : ParseTimeVisitor!AST
+{
+    mixin ParseVisitMethods!AST;
+}
+
+alias SemanticTimeTransitiveVisitor = GenericTransitiveVisitor!ASTCodegen;