diff --git a/Target/Demo/ARMCM4_STM32F3_Nucleo_F303K8_GCC/Prog/lib/newlib/_exit.c b/Target/Demo/ARMCM4_STM32F3_Nucleo_F303K8_GCC/Prog/lib/newlib/_exit.c
new file mode 100644
index 00000000..4ae9532c
--- /dev/null
+++ b/Target/Demo/ARMCM4_STM32F3_Nucleo_F303K8_GCC/Prog/lib/newlib/_exit.c
@@ -0,0 +1,38 @@
+// ----------------------------------------------------------------------------
+
+#include <stdlib.h>
+
+// ----------------------------------------------------------------------------
+
+// Forward declaration
+
+void
+_exit(int code);
+
+// ----------------------------------------------------------------------------
+
+// We just enter an infinite loop, to be used as landmark when halting
+// the debugger.
+//
+// It can be redefined in the application, if more functionality
+// is required.
+
+void
+__attribute__((weak))
+_exit(int code __attribute__((unused)))
+{
+  // TODO: write on trace
+  while (1)
+    ;
+}
+
+// ----------------------------------------------------------------------------
+
+void
+__attribute__((weak,noreturn))
+abort(void)
+{
+  _exit(1);
+}
+
+// ----------------------------------------------------------------------------