commit c05554ec5c9aff5e0f1e83de9bb62c3569eecca2
author Dan Albert <danalbert@google.com> Tue May 19 18:17:31 2015 -0700
committer Dan Albert <danalbert@google.com> Wed May 20 14:20:33 2015 -0700
tree 13991325cce91a9fd76f42303946c21e67106aea
parent c02bdc76a21f6149c7867982e66ab16982e01c1b

Fix error handling for negative size in ftruncate.

Bug: 21309901
Change-Id: I54692ab8105dd09db6af7a2c0894a17bdd118aa0

tests/unistd_test.cpp

diff --git a/tests/unistd_test.cpp b/tests/unistd_test.cpp
index f54a461..a21578a 100644
--- a/tests/unistd_test.cpp
+++ b/tests/unistd_test.cpp
@@ -176,6 +176,15 @@
   ASSERT_EQ(123, sb.st_size);
 }
 
+TEST(unistd, ftruncate_negative) {
+  TemporaryFile tf;
+  errno = 0;
+  int rc = ftruncate(tf.fd, -123);
+  int err = errno;
+  ASSERT_EQ(-1, rc);
+  ASSERT_EQ(EINVAL, err);
+}
+
 static bool g_pause_test_flag = false;
 static void PauseTestSignalHandler(int) {
   g_pause_test_flag = true;