go/doc/next/5-toolchain.md

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Compiler

The compiler and linker in Go 1.25 now generate debug information using DWARF version 5; the newer DWARF version reduces the space required for debuging information in Go binaries. DWARF 5 generation is gated by the "dwarf5" GOEXPERIMENT; this functionality can be disabled (for now) using GOEXPERIMENT=nodwarf5.

Assembler

Linker