sof/scripts/parse_sparse_output.sh

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#!/usr/bin/env bash
# SPDX-License-Identifier: BSD-3-Clause
# "sparse" is not designed for automated testing: its exit code is
# mostly useless. So this script extracts from its output the most
# important messages instead and returns 1 if any is found.
# As of Sep. 2022, sparse's exit status is by default always zero even
# when there is an error, see check_symbols() in sparse.c. There is a
# -DEXTRA_CFLAGS=-Wsparse-error option that returns non-zero... for any
# warning even the most harmless one and it seems to stops on the first
# one. SOF has hundreds of sparse warnings now.
main()
{
local platform="$1" # optional
local sparse_errors=()
>&2 printf 'Reminder: to see ALL warnings you must as usual build _from scratch_\n'
# To reproduce an 'error: ' and test this script try commenting out
# `defined(__CHECKER__)` in common.h.
#
# To reproduce the 'different address space' warning and test this
# script try deleting a __sparse_cache annotation like the one in
# src/audio/mixer/mixer.c
sparse_errors+=(-e '[[:space:]]error:[[:space:]]')
sparse_errors+=(-e '[[:space:]]warning:[[:space:]].*different address space')
! grep -v 'alsatplg.*topology2.*skip' | grep -i "${sparse_errors[@]}"
}
main "$@"