xxx.cpp:344:5: warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings]
Solution 1 (推荐):
cast constant string from char * s = "constant string" to const char *s= "constant string".
Solution 2:
you can also pass
-Wno-write-strings to gcc which then suppresses this warning.Solution 3:
#pragma GCC diagnostic ignored "-Wwrite-strings" 忽略警报...#pragma GCC diagnostic pop 重新打开警报gcc reports -Wmultichar warning:
xxx.cpp:332:7: warning: multi-character character constant [-Wmultichar]
#if (('1234' >> 24) == '1') // little endian ?
^
这个是用宏判断机器是否little-endian/big-endian,一般主机都是little-endian.
Solution 1 (推荐):
Check endian-ness at run time:
int IS_LITTLE_ENDIAN() {
static const int NL_AT_END = 0x000A;
return ((char*)(void*)&NL_AT_END)[0] == '\n';
}
Solution 2:
pass -Wno-multichar to gcc for suppressing this warning.
Further reading: http://zipcon.net/~swhite/docs/computers/languages/c_multi-char_const.html