[Bug libstdc++/125460] std.cc module interface unit cannot be compiled with -ffreestanding

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125460
Bug 125460 depends on bug 125450, which changed state.

Bug 125450 Summary: [16/17 Regression] std::optional breaks in C++26 
freestanding mode
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125450

           What    |Removed                     |Added
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             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED