nuttx/libs/libc/time: fix runtime error by UBSan

Signed-off-by: Junbo Zheng <zhengjunbo1@xiaomi.com>
2022-09-05 10:15:09 +08:00 · 2022-09-05 10:15:09 +08:00 · 74ab851ac4
commit 74ab851ac4
parent 23b27419e2
1 changed files with 1 additions and 1 deletions
--- a/libs/libc/time/lib_localtime.c
+++ b/libs/libc/time/lib_localtime.c
@ -461,7 +461,7 @@ static int_fast64_t detzcode64(FAR const char *codep)
  result = (codep[0] & 0x80) ? -1 : 0;
  for (i = 0; i < 8; ++i)
    {
-      result = (result << 8) | (codep[i] & 0xff);
+      result = (result * 256) | (codep[i] & 0xff);
    }

  return result;