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declare the aarch64/linux/aapcs64 cross-target so std is cross-buildable to aarch64 out of the box, matching mach's own [target.linux-arm64]. Refs #280
cross-build std's test suite for linux-arm64 and run it under qemu-aarch64, giving std an independent aarch64 regression signal (mirrors the cross-riscv64 lane's install shape). Refs #280
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Closes #280
What
[target.linux-arm64](isa=aarch64, os=linux, abi=aapcs64) to std'smach.toml, matching mach's own[target.linux-arm64]. std is now cross-buildable to aarch64 out of the box.cross-arm64CI lane that installsqemu-user, cross-builds std's test suite forlinux-arm64, and runs each test underqemu-aarch64viamach test . --target linux-arm64 --runner qemu-aarch64.This gives std an independent, automatic aarch64 regression signal over its full unit suite — including
std.data.toml, the coverage that would have auto-caught the f64 memory-load miscompile from #278/#279. The lane mirrors the install shape of the existingcross-riscv64lane.Local verification
Cross-built and ran std's suite under
qemu-aarch64on an x86_64 host with the v2.13.0 seed compiler:Related: #278, #279.