solidity/scripts/solc-bin/compare_bytecode_reports.sh

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#!/usr/bin/env bash
# ------------------------------------------------------------------------------
# Compares bytecode reports from multiple compiler versions and platforms to
# determine if there are any differences.
#
# The script does not accept any arguments.
#
# The reports should be placed in subdirectories of the current working
# directory and their names should follow one of the following patterns:
#
# report-solc-<platform>-v<solidity version>+commit.<commit hash>.txt
# report-soljson-<platform>-v<solidity version>+commit.<commit hash>.js.txt
#
# Reports corresponding to the same version and commit hash are grouped together
# and the script succeeds only if the files within each group are identical.
# ------------------------------------------------------------------------------
# This file is part of solidity.
#
# solidity is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# solidity is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with solidity. If not, see <http://www.gnu.org/licenses/>
#
# (c) 2020 solidity contributors.
#------------------------------------------------------------------------------
set -euo pipefail
report_files="$(find . -type f -name 'report-*.txt')"
[[ $report_files != "" ]] || { echo "No reports found in the working directory."; exit 0; }
echo "Available reports:"
echo "$report_files"
versions_in_report_names=$(
echo "$report_files" |
sed -n -E 's/^\.\/[^\/]+\/report-(solc|soljson)-[0-9a-zA-Z-]+-v([0-9.]+\+commit\.[0-9a-f]+)(.[^.]+)?\.txt$/\2/p' |
sort -V |
uniq
)
num_failed_comparisons=0
for solidity_version_and_commit in $versions_in_report_names; do
echo "Comparing reports for Solidity ${solidity_version_and_commit}:"
mapfile -t report_files_for_version < <(
echo "$report_files" |
sed -n -E '/^\.\/[^\/]+\/report-(solc|soljson)-[0-9a-zA-Z-]+-v'"${solidity_version_and_commit//\+/\\+}"'+(.[^.]+)?\.txt$/p'
)
diff --report-identical-files --brief --from-file "${report_files_for_version[@]}" || ((++num_failed_comparisons))
echo
done
(( num_failed_comparisons == 0 )) || { echo "Found bytecode differences in ${num_failed_comparisons} versions"; exit 1; }
echo "No bytecode differences found."