From c1e514e03ab7de4399ca12c9ae988b0707a99f8b Mon Sep 17 00:00:00 2001
From: Jan Breuer <jan.breuer@jaybee.cz>
Date: 周二, 15 9月 2015 03:13:35 +0800
Subject: [PATCH] Resolve #46: Detect missing parameter

---
 examples/common/scpi-def.cpp |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/examples/common/scpi-def.cpp b/examples/common/scpi-def.cpp
index c53fa4f..c69af2e 100644
--- a/examples/common/scpi-def.cpp
+++ b/examples/common/scpi-def.cpp
@@ -167,8 +167,9 @@
     char buffer[100];
     size_t copy_len;
 
-    buffer[0] = 0;
-    SCPI_ParamCopyText(context, buffer, 100, &copy_len, false);
+    if(!SCPI_ParamCopyText(context, buffer, sizeof(buffer), &copy_len, false)) {
+        buffer[0] = '\0';
+    }
 
     fprintf(stderr, "TEXT: ***%s***\r\n", buffer);
 

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