tests/bionic/compare_libc_stripping.sh

#!/bin/bash
#
# Copyright 2021 Google Inc. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

set -euo pipefail

source "${RUNFILES_DIR}/bazel_tools/tools/bash/runfiles/runfiles.bash"

# Smoke test to check that the stripped libc.so is smaller than the unstripped one.
function test_libc_stripping_basic() {
    local stripped="$(rlocation __main__/bionic/libc/liblibc_bp2build_cc_library_shared.so)"
    local unstripped="$(rlocation __main__/bionic/libc/liblibc_bp2build_cc_library_shared_unstripped.so)"

    stripped_size=$(stat -c %s "${stripped}")
    unstripped_size=$(stat -c %s "${unstripped}")

    # Check that the unstripped size is not greater or equal to the stripped size.
    if [ "${stripped_size}" -ge "${unstripped_size}"  ]; then
        echo "Expected the size of stripped libc.so to be strictly smaller than the unstripped one."
        exit 1
    fi
}

test_libc_stripping_basic