From a96fdcfe275451c2a217c6ccf34cdd73c5719905 Mon Sep 17 00:00:00 2001
From: Andrej Rode <andrej.rode@ettus.com>
Date: Tue, 25 Apr 2017 12:32:39 -0700
Subject: examples: fix device_args parsing in tx_samples_c

---
 host/examples/tx_samples_c.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/host/examples/tx_samples_c.c b/host/examples/tx_samples_c.c
index f04d4b26c..333c7e820 100644
--- a/host/examples/tx_samples_c.c
+++ b/host/examples/tx_samples_c.c
@@ -57,7 +57,7 @@ int main(int argc, char* argv[]){
     double freq = 2e9;
     double rate = 1e6;
     double gain = 0;
-    char* device_args = "";
+    char* device_args;
     size_t channel = 0;
     uint64_t total_num_samps = 0;
     bool verbose = false;
@@ -106,6 +106,9 @@ int main(int argc, char* argv[]){
         fprintf(stderr, "Unable to set thread priority. Continuing anyway.\n");
     }
 
+    if (device_args == NULL){
+        device_args = "";
+    }
     // Create USRP
     uhd_usrp_handle usrp;
     fprintf(stderr, "Creating USRP with args \"%s\"...\n", device_args);
@@ -246,7 +249,7 @@ int main(int argc, char* argv[]){
         uhd_usrp_free(&usrp);
 
     free_option_strings:
-        if(strcmp(device_args,"")){
+        if(device_args != NULL){
             free(device_args);
         }
 
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