From 3f779af94df4c5a74b5408ab761bc856d7f43360 Mon Sep 17 00:00:00 2001
From: yuanbo <yuanbo@huawei.com>
Date: Mon, 7 Jun 2021 16:37:57 +0800
Subject: [PATCH] fix hcs build failed on ubuntu 21.04

Signed-off-by: yuanbo <yuanbo@huawei.com>
---
 tools/hc-gen/src/lexer.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/hc-gen/src/lexer.cpp b/tools/hc-gen/src/lexer.cpp
index fd58550c7..8e2cf91e5 100644
--- a/tools/hc-gen/src/lexer.cpp
+++ b/tools/hc-gen/src/lexer.cpp
@@ -256,6 +256,8 @@ bool Lexer::LexFromNumber(Token &token)
     std::string value;
     char c;
     uint64_t v = 0;
+    errno = 0;
+
     GetChar(c, false);
     switch (c) {
         case '0':
-- 
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