arti/maint/coverage_fuzz_corpora

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#!/usr/bin/env bash
set -euo pipefail
if [ -z "${LLVM_PROFILE_FILE:-}" ]; then
echo "This script is meant to be run inside with_coverage" >&2
exit 1
fi
coverage_dir=$(dirname "$LLVM_PROFILE_FILE")
TOPDIR=$(realpath "$(dirname "$0")/..")
cd "$TOPDIR"
# set an alternative target directory so it's possible to reuse cached artifacts between coverage
# runs of coverage and fuzzing.
export CARGO_TARGET_DIR=${CARGO_TARGET_DIR:-target-coverage}
for d in ./crates/*/fuzz; do
pushd "$(dirname "$d")"
crate=$(basename "$(dirname "$d")")
mkdir -p "$TOPDIR/target/debug/$crate"
mkdir -p "$coverage_dir/$crate"
for fuzzer in $(cargo fuzz list); do
# disable sanitizer to work in stable. Also make curve25519-dalek compilation much faster
cargo fuzz coverage "$fuzzer" --sanitizer=none
# we copy binary and coverage data where with_coverage expect it to be
cp "target-coverage/x86_64-unknown-linux-gnu/release/$fuzzer" "$TOPDIR/target/debug/$crate/$fuzzer"
mv "fuzz/coverage/$fuzzer/raw" "$coverage_dir/$crate/$fuzzer"
done
popd
done