c - warning: type qualifiers ignored on function return type in gcc 4.1.2

Question

I am using gcc 4.1.2 on Linux, and I encountered the following warning:

warning: type qualifiers ignored on function return type

I tried to use "-Wno-ignored-qualifiers" to get rid of this warning but it seems not supported:

cc1: error: unrecognized command line option "-Wno-ignored-qualifiers"

Is there a way to disable such warnings in gcc 4.1.2?

Thanks a lot.

Answer 1

找到了解决方案。利用：

-Wno-return-type

Answer 2

如此处所示， aconst char *不会触发该警告。

如果const char可能的话，避免该警告的正确方法是将返回类型从 更改const char为char。

请参阅Junio C Hamano ( )为 Git 2.16（2018 年第一季度）提交的 ee5462d（2017 年 12 月 27 日）示例。gitster

sequencer.cconst:从函数返回类型中删除“ ”

使用-Werror=ignored-qualifiers，声称返回 " const char" 的函数会出现此错误：

   CC sequencer.o
sequencer.c:798:19: error: type qualifiers ignored on function return
type [-Werror=ignored-qualifiers]
 static const char command_to_char(const enum todo_command command)
                   ^