name: Patch PHP headers for C++
description: Apply temporary upstream PHP header fixes required by generated C++.

runs:
  using: composite
  steps:
    # Temporary workaround for php/php-src#22935. Some supported PHP packages
    # contain a php_hash.h revision that is valid C but invalid C++. Remove
    # this action when all PHP 8.4/8.5 packages include php/php-src#22940.
    - name: Patch php_hash.h
      shell: bash
      run: |
        php_include_dir="$(php-config --include-dir)"
        php_hash_header="${php_include_dir}/ext/hash/php_hash.h"

        if grep -Fq 'char *base = ecalloc(' "${php_hash_header}"; then
          sudo patch --directory="${php_include_dir}" --strip=1 \
            < "${GITHUB_ACTION_PATH}/../../patches/php-hash-cxx.patch"
        else
          echo "php_hash.h already contains the upstream C++ fix"
        fi