From ef15bf424e208c050394ba56f6673ab7901dcd9d Mon Sep 17 00:00:00 2001
From: yubingpeng <yubingpenguestc@163.com>
Date: Tue, 23 Jan 2018 19:11:06 +0800
Subject: [PATCH] fix decimal bug (#181)

---
 be/src/runtime/decimal_value.h | 4 +++-
 be/src/udf/udf.h               | 2 +-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/be/src/runtime/decimal_value.h b/be/src/runtime/decimal_value.h
index 0aef67480a..1850362201 100755
--- a/be/src/runtime/decimal_value.h
+++ b/be/src/runtime/decimal_value.h
@@ -132,6 +132,7 @@ public:
     // Note: the base is 10^9 for parameter frac_value, which means the max length of fraction part
     // is 9, and the parameter frac_value need to be divided by 10^9.
     DecimalValue(int64_t int_value, int64_t frac_value) : _buffer_length(DECIMAL_BUFF_LENGTH) {
+        set_to_zero();
         if (int_value < 0 || frac_value < 0) {
             _sign = true;
         } else {
@@ -148,6 +149,7 @@ public:
     }
 
     DecimalValue(int64_t int_value) : _buffer_length(DECIMAL_BUFF_LENGTH){
+        set_to_zero();
         _sign = int_value < 0 ? true : false;
 
         int32_t big_digit_length = copy_int_to_decimal_int(
@@ -390,7 +392,7 @@ public:
     // set DecimalValue to zero
     void set_to_zero() {
         _buffer_length = DECIMAL_BUFF_LENGTH;
-        _buffer[0] = 0;
+        memset(_buffer, 0, sizeof(int32_t) * DECIMAL_BUFF_LENGTH);
         _int_length = 1;
         _frac_length = 0;
         _sign = false;
diff --git a/be/src/udf/udf.h b/be/src/udf/udf.h
index 544eb03158..1f23b3d733 100755
--- a/be/src/udf/udf.h
+++ b/be/src/udf/udf.h
@@ -672,7 +672,7 @@ struct DecimalVal : public AnyVal {
     }
     
     void set_to_zero() {
-        buffer[0] = 0;
+        memset(buffer, 0, sizeof(int32_t) * 9);
         int_len = 0;
         frac_len = 0;
         sign = 0;