#!/usr/bin/env bash
set -euo pipefail
root="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")/.." && pwd)"
source_file="$root/src/rootguard/bpf/rootguard.bpf.c"
patch_file="$root/pkgbuild/patches/rootguard-clang23-memcpy-inline.patch"
for statement in \
  '__builtin_memcpy_inline(destination, source, RG_FILENAME_LEN);' \
  '__builtin_memcpy_inline(destination, source, RG_COMM_LEN);' \
  '__builtin_memcpy_inline(destination, pending->path, RG_FILENAME_LEN);'; do
  grep -Fq -- "$statement" "$source_file"
done
# The reference patch must already be applied to the delivered source.
if patch -d "$root" -p1 --dry-run -R -i "$patch_file" >/dev/null 2>&1; then
  echo 'RootGuard Clang 23 source patch: integrated'
else
  echo 'ERROR: RootGuard Clang 23 patch missing or source differs' >&2
  exit 1
fi
if command -v clang >/dev/null 2>&1; then
  printf '%s\n' \
    'void inline_copy(char *d, const char *s) {' \
    '  __builtin_memcpy_inline(d, s, 256);' \
    '  __builtin_memcpy_inline(d, s, 16);' \
    '}' | clang -std=c11 -Wall -Wextra -Werror -fsyntax-only -x c -
  echo 'Clang builtin smoke test: OK (not an eBPF target build)'
fi