backup errno

1 files changed, 2 insertions, 0 deletions

diff --git a/src/arm/gnunet-service-arm.c b/src/arm/gnunet-service-arm.c
index bce27bedc..84aad3bfd 100644
--- a/src/arm/gnunet-service-arm.c
+++ b/src/arm/gnunet-service-arm.c
@@ -1002,10 +1002,12 @@ static void
 sighandler_child_death ()
 {
   static char c;
+  int old_errno = errno; /* back-up errno */
   GNUNET_break (1 == 
                 GNUNET_DISK_file_write (GNUNET_DISK_pipe_handle
                                         (sigpipe, GNUNET_DISK_PIPE_END_WRITE), &c,
                                         sizeof (c)));
+  errno = old_errno; /* restore errno */
 }