[Bug c++/69763] _Alignof(double) in C gives different results from alignof(double) in C++

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69763

--- Comment #4 from Jason Merrill <jason at gcc dot gnu.org> ---
Created attachment 43903
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=43903&action=edit
proposed fix