no_atomic_cas.sh

#!/bin/bash
set -euo pipefail
IFS=$'\n\t'
cd "$(dirname "$0")"/..

# Update the list of targets that do not support atomic CAS operations.
#
# Usage:
#    ./ci/no_atomic_cas.sh

file="no_atomic_cas.rs"

no_atomic_cas=()
for target in $(rustc --print target-list); do
    target_spec=$(rustc --print target-spec-json -Z unstable-options --target "${target}")
    res=$(jq <<<"${target_spec}" -r 'select(."atomic-cas" == false)')
    [[ -z "${res}" ]] || no_atomic_cas+=("${target}")
done

cat >"${file}" <<EOF
// This file is @generated by $(basename "$0").
// It is not intended for manual editing.

const NO_ATOMIC_CAS: &[&str] = &[
EOF
for target in "${no_atomic_cas[@]}"; do
    echo "    \"${target}\"," >>"${file}"
done
cat >>"${file}" <<EOF
];
EOF