Don't try to create thin bsd archives.
Not such variant has been specified yet.
llvm-svn: 268305
diff --git a/llvm/test/Object/archive-format.test b/llvm/test/Object/archive-format.test
index 651a9b9..70458d5 100644
--- a/llvm/test/Object/archive-format.test
+++ b/llvm/test/Object/archive-format.test
@@ -62,3 +62,6 @@
THIN-PATH-NEXT: /20 0 0 0 644 4 `
THIN-PATH-NEXT: /41 0 0 0 644 4 `
THIN-PATH-NEXT: /65 0 0 0 644 4 `
+
+RUN: not llvm-ar --format=bsd rcT bad.a 0123456789abcde 0123456789abcdef 2>&1 | FileCheck --check-prefix=BSD-THIN %s
+BSD-THIN: Only the gnu format has a thin mode.