Sema: improve circular dependency errors

1 files changed, 13 insertions, 0 deletions

diff --git a/test/cases/compile_errors/indirect_struct_loop.zig b/test/cases/compile_errors/indirect_struct_loop.zig
new file mode 100644
index 0000000000..dca2b9c3f6
--- /dev/null
+++ b/test/cases/compile_errors/indirect_struct_loop.zig
@@ -0,0 +1,13 @@
+const A = struct { b : B, };
+const B = struct { c : C, };
+const C = struct { a : A, };
+export fn entry() usize { return @sizeOf(A); }
+
+// error
+// backend=stage2
+// target=native
+//
+// :1:11: error: struct 'tmp.A' depends on itself
+// :3:20: note: while checking this field
+// :2:20: note: while checking this field
+// :1:20: note: while checking this field