warning:integer constant is too large for long type

最新推荐文章于 2020-11-22 09:28:45 发布

My__God

最新推荐文章于 2020-11-22 09:28:45 发布

阅读量2.1k

点赞数

分类专栏： c++ 文章标签： c++ gcc

c++ 专栏收录该内容

17 篇文章

订阅专栏

本文解决在EDK环境下定义64位整型变量时遇到的警告问题。当使用powerpc-eabi-gcc编译器时，未在长整型常量后添加LL后缀会导致警告。文章提供了解决方案，即通过正确地使用LL后缀来消除警告。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

疑问描述

Keywords: EDK, long long integer, 64-bit, SW, mb-gcc, powerpc-eabi-gcc, compiler, C/C++ , g++

When I define a long long integer data type in SW application in EDK, a warning / error similar to the following occurs:

"warning: integer constant is too large for 'long' type".

Example:
int main ()
{
long long int test = 0x0008888000000000;
},

解决方案

The warning message can be safely ignored, as mb-gcc is not doing anything wrong; the 64-bit computing is in fact correct.

This warning occurs because gcc is strict in syntax and requires LL on the end of such constants. This warning message disappears if the integer is appended with LL.

long long int test = 0x0008888000000000LL;