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scr_unwind.c is linked into every Linux executable, and its references to _Unwind_ForcedUnwind and _Unwind_GetCFA pulled the unwinder out of libgcc_eh (or Zig's libunwind) even for programs that never raise, which grew a static hello world past its size ceiling. The references are now weak: programs that raise reference the personality routine from their landing pads, and its unit links the unwinder in.