1 files changed, 16 insertions, 1 deletions

diff --git a/test/Object/archive-update.test b/test/Object/archive-update.test
index 147db90ba951..fd1ea4113c39 100644
--- a/test/Object/archive-update.test
+++ b/test/Object/archive-update.test
@@ -7,12 +7,13 @@ Create a file named evenlen that is newer than the evenlen on the source dir.
 RUN: mkdir -p %t.older
 RUN: echo older > %t.older/evenlen
 
+RUN: mkdir -p %t.newer
+
 Either the shell supports the 'touch' command with a flag to manually set the
 mtime or we sleep for over two seconds so that the mtime is definitely
 observable.
 RUN: touch -m -t 200001010000 %t.older/evenlen || sleep 2.1
 
-RUN: mkdir -p %t.newer
 RUN: echo newer > %t.newer/evenlen
 RUN: touch %t.newer/evenlen
 
@@ -34,3 +35,17 @@ RUN: llvm-ar p %t.a | FileCheck --check-prefix=NEWER %s
 
 NEWER: newer
 OLDER: older
+
+RUN: rm -f %t.a
+RUN: echo foo > foo
+RUN: echo bar > bar
+RUN: llvm-ar --format=gnu rcT %t.a foo
+RUN: llvm-ar --format=gnu rcT %t.a bar
+RUN: llvm-ar t %t.a | FileCheck --check-prefix=BOTH-FILES %s
+BOTH-FILES: foo
+BOTH-FILES: bar
+
+RUN: rm -f %t.a
+RUN: llvm-ar --format=gnu rc %t.a foo
+RUN: not llvm-ar --format=gnu rcT %t.a bar 2>&1 | FileCheck --check-prefix=ERROR %s
+ERROR: Cannot convert a regular archive to a thin one.