X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/9d7e9935aff2438379074b669c0c1ba42d8dc0ac..8ae9b358f85bdfc60e269c0e93c8fa911869706a:/client/cmddata.c?ds=sidebyside

diff --git a/client/cmddata.c b/client/cmddata.c
index 6570b243..18edd33e 100644
--- a/client/cmddata.c
+++ b/client/cmddata.c
@@ -527,7 +527,11 @@ int ASKbiphaseDemod(const char *Cmd, bool verbose)
 	sscanf(Cmd, "%i %i %i %i", &offset, &clk, &invert, &maxErr);
 	
 	uint8_t BitStream[MAX_DEMOD_BUF_LEN];
-	size_t size = getFromGraphBuf(BitStream);	  
+	size_t size = getFromGraphBuf(BitStream);	
+	if (size == 0 ) {
+		if (g_debugMode) PrintAndLog("DEBUG: no data in graphbuf");  
+			return 0;  
+	}
 	//invert here inverts the ask raw demoded bits which has no effect on the demod, but we need the pointer
 	int errCnt = askdemod(BitStream, &size, &clk, &invert, maxErr, 0, 0);  
 	if ( errCnt < 0 || errCnt > maxErr ) {