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Big Endian (s390x) #15

	name: Big Endian (s390x)

	# The regular test matrix only runs on little-endian hosts (x86_64 / aarch64).
	# simd-json's `native` backend reinterprets byte buffers as `u64` in a couple of
	# hot paths (atom checks, SWAR number parsing), so a big-endian target is the
	# only way to catch endianness regressions there. s390x is big-endian and is
	# exercised here under QEMU via `cross`. Kept on a weekly schedule because the
	# emulated run is slow and these code paths change rarely.

	on:
	schedule:
	# Mondays at 06:00 UTC
	- cron: "0 6 * * 1"
	workflow_dispatch:

	jobs:
	s390x:
	name: Test on s390x (big-endian)
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3

	- uses: dtolnay/rust-toolchain@1.88

	- name: Install cross
	uses: taiki-e/install-action@v2
	with:
	tool: cross

	- name: Run tests on s390x (default features)
	run: cross test --target s390x-unknown-linux-gnu --lib

	- name: Run tests on s390x (no-default-features)
	run: cross test --target s390x-unknown-linux-gnu --lib --no-default-features