From 8dc12fcd98d2957904bc9b215775328b7d5c0202 Mon Sep 17 00:00:00 2001
From: skarg <skarg@1e814d3a-8a88-4260-be86-c0dc25669c1e>
Date: Wed, 17 Jun 2009 23:22:48 +0000
Subject: [PATCH] Corrected a minor issue in the bacapp.c file on the PC side
 when printing strings with garbage characters with the 8th bit set. The code
 passed a signed char to the isprint() function which gets sign extended to an
 int and then caused an assert in the Microsoft library code (Visual C++
 Express 2008).  Thank you, Peter!

---
 bacnet-stack/src/bacapp.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/bacnet-stack/src/bacapp.c b/bacnet-stack/src/bacapp.c
index 9b6ce5ad..227e97e2 100644
--- a/bacnet-stack/src/bacapp.c
+++ b/bacnet-stack/src/bacapp.c
@@ -744,10 +744,11 @@ bool bacapp_print_value(
                     characterstring_value(&value->type.Character_String);
                 fprintf(stream, "\"");
                 for (i = 0; i < len; i++) {
-                    if (isprint(*char_str))
+                    if (isprint(*((unsigned char *)char_str))) {
                         fprintf(stream, "%c", *char_str);
-                    else
+                    } else {
                         fprintf(stream, ".");
+                    }
                     char_str++;
                 }
                 fprintf(stream, "\"");