缺少返回语句时出错 [英] Error on missing return statement

问题描述

如何为GCC下缺少的return语句生成错误？

How do I generate an error for a missing return statement under GCC?

cpfsfuse.c:184: warning: no return statement in function returning non-void

我能够返回错误的隐式函数声明code> -Werror-implicit-function-declaration ），我知道一个 -Werror =

I'm able to return errors for implicit function declaration (-Werror-implicit-function-declaration), and I'm aware of a -Werror= switch, but I can't locate an appropriate warning to promote to error status.

如何实现这一目标？

推荐答案

您应该能够使用 -fdiagnostics-show-option 选项来显示 Werror = 切换。摘自此博文：

You should be able to use the -fdiagnostics-show-option option to show the correct flag for the Werror= switch. Taken from this blog post:

% gcc -x c -Wall -Wextra -fdiagnostics-show-option -c -o /dev/null - <<EOF
int foo() {
}
EOF
<stdin> In function ‘foo’:
<stdin>:2: warning: control reaches end of non-void function [-Wreturn-type]

实际上， return-type 标志可能就是你想要的标志。

Actually, it looks like the return-type flag may be the one you want.

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