cmd/link: pass -no_fixup_chains to C linker when building plugin on macOS The dynamic linker in macOS 27 checks the number of segments recorded in the LC_DYLD_CHAINED_FIXUPS load command, and reject the shared object when there is a mismatch. When combining DWARF, we add a segment but currently don't fix up the recorded number. Pass -no_fixup_chains to the C linker, so it doesn't use LC_DYLD_CHAINED_FIXUPS. This is a minimal workaround that we can backport to Go 1.26 and Go 1.27. Long term, we should emit split DWARF (#62577). Fixes #81793. Change-Id: I991e046348db9250b8d583b633d5502b1cf3502a Reviewed-on: https://go-review.googlesource.com/c/go/+/841665 Reviewed-by: David Chase <drchase@google.com> LUCI-TryBot-Result: golang-scoped@luci-project-accounts.iam.gserviceaccount.com <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
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