nokogiri-1959

_README.md

This gist relates to sparklemotion/nokogiri#1959

check-symbol-table.sh

#! /usr/bin/env bash

so=$1

if [[ $so == "" ]] ; then
  echo "searching for shared library ..."
  path=$(gem info nokogiri | fgrep Installed | cut -d: -f2)
  echo "... gem installed in $path"
  so=$(find $path -name nokogiri.so | xargs ls -t | head -n1)
  echo "... FOUND: $so"
fi

nm $so | fgrep Init_nokogiri
entry=$(nm $so | fgrep Init_nokogiri | head -n1 | cut -d' ' -f2)

if [[ $entry == "t" ]] ; then
  echo "ruby entry symbol is private"
elif [[ $entry == "T" ]] ; then
  echo "ruby entry symbol is exported (public)"
else
  echo "ERROR: symbol table entry tagged '$entry'"
fi

nm $so | fgrep xmlXPtrEvalRangePredicate
entry=$(nm $so | fgrep xmlXPtrEvalRangePredicate | head -n1 | cut -d' ' -f2)

if [[ $entry == "t" ]] ; then
  echo "libxml2 symbols are private"
elif [[ $entry == "T" ]] ; then
  echo "libxml2 symbols are exported (public)"
else
  echo "ERROR: symbol table entry tagged '$entry'"
fi

docker-compose.yml

version: '3'

services:
  ruby:
    environment: { MAKEFLAGS: "-j8" }
    build: .
    command: sh -c "gem install rmagick mini_portile2 && gem install nokogiri && ruby repro.rb && ./check-symbol-table.sh"
    volumes:
      - ./:/app
  ruby-proposed-fix:
    environment: { MAKEFLAGS: "-j8" }
    build: .
    command: sh -c "gem install rmagick mini_portile2 && gem install --local nokogiri-1.10.1000.gem && ruby repro.rb && ./check-symbol-table.sh"
    volumes:
      - ./:/app
  ruby-workaround:
    environment: { MAKEFLAGS: "-j8" }
    build: .
    command: sh -c "bundle && bundle exec ruby workaround.rb"
    volumes:
      - ./:/app

Dockerfile

FROM ruby:2-alpine3.10
RUN apk add build-base imagemagick6-dev bash
WORKDIR /app

Gemfile

source 'https://rubygems.org'
gem 'nokogiri'
gem 'rmagick'

Gemfile.lock

GEM
  remote: https://rubygems.org/
  specs:
    mini_portile2 (2.4.0)
    nokogiri (1.10.7)
      mini_portile2 (~> 2.4.0)
    rmagick (4.0.0)

PLATFORMS
  ruby

DEPENDENCIES
  nokogiri
  rmagick

BUNDLED WITH
   2.1.2

repro.rb

require "rmagick"
require "nokogiri"

require "yaml"

puts Nokogiri::VERSION_INFO.to_yaml

workaround.rb

require "nokogiri"
require "rmagick"