From 7bd27ff1579f52043f9736a81eb673a3f484274b Mon Sep 17 00:00:00 2001
From: Stefan Rueger <stefan.rueger@urclocks.com>
Date: Mon, 22 Apr 2024 15:17:46 +0100
Subject: [PATCH] return LIBAVRDUDE_EXIT instead of exit(0)

---
 src/libavrdude.h | 1 +
 src/teensy.c     | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/libavrdude.h b/src/libavrdude.h
index 453b22a0..60cf4ebf 100644
--- a/src/libavrdude.h
+++ b/src/libavrdude.h
@@ -59,6 +59,7 @@ typedef uint32_t pinmask_t;
 #define LIBAVRDUDE_NOTSUPPORTED (-2) // operation not supported
 #define LIBAVRDUDE_SOFTFAIL (-3) // returned, eg, by avr_signature() if caller
                                  // might proceed with chip erase
+#define LIBAVRDUDE_EXIT (-4)     // End all operations in this session
 
 /* formerly lists.h */
 
diff --git a/src/teensy.c b/src/teensy.c
index ac1cdb6e..840b3928 100644
--- a/src/teensy.c
+++ b/src/teensy.c
@@ -557,7 +557,7 @@ static int teensy_parseextparams(const PROGRAMMER *pgm, const LISTID xparams) {
             msg_error("  -xwait       Wait for the device to be plugged in if not connected\n");
             msg_error("  -xwait=<arg> Wait <arg> [s] for the device to be plugged in if not connected\n");
             msg_error("  -xhelp       Show this help menu and exit\n");
-            exit(0);
+            return LIBAVRDUDE_EXIT;;
         }
         else
         {