[Bug libstdc++/100017] [11/12 regression] error: 'fenv_t' has not been declared in '::' -- canadian compilation fails

[unlvsur at live dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100017

--- Comment #31 from cqwrteur <unlvsur at live dot com> ---
(In reply to Andrew Aladjev from comment #30)
> Created attachment 51746 [details]
> Include fenv dirty patch for gcc 11.2.0
> 
> Please apply carefully, it is not safe.

no. adding -nostdinc++ is the right solution. yours are wrong.