diff --git a/winsup/cygwin/fhandler/fifo.cc b/winsup/cygwin/fhandler/fifo.cc
index efea508ae5..ee49ce695e 100644
--- a/winsup/cygwin/fhandler/fifo.cc
+++ b/winsup/cygwin/fhandler/fifo.cc
@@ -669,7 +669,7 @@ fhandler_fifo::create_shmem (bool only_open)
 {
   HANDLE sect;
   OBJECT_ATTRIBUTES attr;
-  NTSTATUS status;
+  NTSTATUS status = STATUS_SUCCESS;
   LARGE_INTEGER size = { .QuadPart = sizeof (fifo_shmem_t) };
   SIZE_T viewsize = sizeof (fifo_shmem_t);
   PVOID addr = NULL;
diff --git a/winsup/cygwin/tty.cc b/winsup/cygwin/tty.cc
index bf7c6010fd..2cd4ae6ed4 100644
--- a/winsup/cygwin/tty.cc
+++ b/winsup/cygwin/tty.cc
@@ -323,7 +323,7 @@ tty::wait_fwd ()
      thread when the last data is transfered. */
   const ULONGLONG sleep_in_nat_pipe = 16;
   const ULONGLONG time_to_wait = sleep_in_nat_pipe * 2 + 1/* margine */;
-  ULONGLONG elapsed;
+  ULONGLONG elapsed = 0;
   while (fwd_not_empty
 	 || (elapsed = GetTickCount64 () - fwd_last_time) < time_to_wait)
     {
diff --git a/winsup/utils/kill.cc b/winsup/utils/kill.cc
index fb45e4c9dc..bcabcd47c9 100644
--- a/winsup/utils/kill.cc
+++ b/winsup/utils/kill.cc
@@ -73,7 +73,7 @@ print_version ()
 static const char *
 strsigno (int signo)
 {
-  static char sigbuf[8];
+  static char sigbuf[32];
 
   if (signo > 0 && signo < SIGRTMIN)
     return sys_sigabbrev[signo];