The file used ".align 16" intending 16-byte alignment (GNU/ELF semantics).
On macOS the Mach-O assembler reads ".align N" as 2^N, so it requested
64KB alignment for __TEXT,__text, producing:
ld: warning: reducing alignment of section __TEXT,__text from 0x10000
to 0x1000 because it exceeds segment maximum alignment
The linker clamps it back, so it was harmless, but .balign 16 means
16 bytes on every target and silences the warning.
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