1 files changed, 9 insertions, 1 deletions

diff --git a/src/process.c b/src/process.c
index 3c8aca9560e..09f55b569dd 100644
--- a/src/process.c
+++ b/src/process.c
@@ -5572,7 +5572,15 @@ process_send_signal (process, signo, current_group, nomsg)
           break;
         }
 
-      if (sig_char && *sig_char != CVDISABLE)
+#ifndef _POSIX_VDISABLE
+#ifdef CVDISABLE
+#define _POSIX_VDISABLE CVDISABLE
+#else
+#define _POSIX_VDISABLE '\0'
+#endif
+#endif
+
+      if (sig_char && *sig_char != _POSIX_VDISABLE)
         send_process (proc, sig_char, 1, Qnil);
       return;
 #else /* ! HAVE_TERMIOS */