modbuslog: ensure arrays are zero'd before use

1 files changed, 6 insertions, 0 deletions

diff --git a/src/modbuslog.c b/src/modbuslog.c
index 910e53f..112f9c8 100644
--- a/src/modbuslog.c
+++ b/src/modbuslog.c
@@ -235,6 +235,9 @@ int main(int argc, char *argv[]) {
 
 				int retry = 0;
 
+				// zero tab_reg before use
+				memset(tab_reg, 0, sizeof(tab_reg));
+
 				// convert bytes to registers
 				int nummodbusregisters;
 				nummodbusregisters = (((numbytes-1)/2)+1);
@@ -310,6 +313,9 @@ int main(int argc, char *argv[]) {
 
 				int p;
 
+				// zero byte before use
+				memset(byte, 0, sizeof(byte));
+
 				// data arrives in words, split into bytes
 				for (p = 0; p < nummodbusregisters; p++) {
 					MODBUS_SET_INT16_TO_INT8(byte, p * 2, tab_reg[p]);