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

[aladjev.andrew at gmail dot com via Gcc-bugs]

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

--- Comment #30 from Andrew Aladjev <aladjev.andrew at gmail dot com> ---
Created attachment 51746
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=51746&action=edit
Include fenv dirty patch for gcc 11.2.0

Please apply carefully, it is not safe.