commit 1dd1b88bdee77b32d316de2a9a2ed52856f75483
author Dan Albert <danalbert@google.com> Sun Jul 20 11:49:46 2014 -0700
committer Dan Albert <danalbert@google.com> Tue Jul 29 14:20:15 2014 -0700
tree 9f64722f8afda3fe0237966abc0f8c364160e5d0
parent 2ea0a58e01c1ed6db1da9dd0314ee053f5a32026

__libc_fatal should print a newline to stderr.

Change-Id: I088dc880d7488a65beac8cda95f530f3db41f112
(cherry picked from commit 97e31dedf056b07bcfcd46c49b60bf0798c60843)

libc/bionic/libc_logging.cpp

diff --git a/libc/bionic/libc_logging.cpp b/libc/bionic/libc_logging.cpp
index e656a12..d0172ed 100644
--- a/libc/bionic/libc_logging.cpp
+++ b/libc/bionic/libc_logging.cpp
@@ -620,7 +620,11 @@
   out_vformat(os, format, args);
 
   // log to stderr for the benefit of "adb shell" users.
-  write(2, msg, strlen(msg));
+  struct iovec iov[2] = {
+    {msg, strlen(msg)},
+    {const_cast<void*>(static_cast<const void*>("\n")), 1},
+  };
+  writev(2, iov, 2);
 
   // Log to the log for the benefit of regular app developers (whose stdout and stderr are closed).
   __libc_write_log(ANDROID_LOG_FATAL, "libc", msg);