1 files changed, 10 insertions, 1 deletions
diff --git a/travis_config.rb b/travis_config.rb
index 9a82e65aa..6f406ae37 100644
--- a/travis_config.rb
+++ b/travis_config.rb
@@ -1,8 +1,17 @@
+MRuby::Build.new('debug') do |conf|
+  toolchain :gcc
+  enable_debug
+
+  # include all core GEMs
+  conf.gembox 'full-core'
+  conf.cc.defines += %w(MRB_GC_FIXED_ARENA)
+end
+
 MRuby::Build.new do |conf|
   toolchain :gcc
 
   # include all core GEMs
   conf.gembox 'full-core'
-  conf.cc.defines = %w(MRB_DEBUG)
+  conf.cc.defines = %w(MRB_DEBUG MRB_GC_FIXED_ARENA)
   conf.enable_bintest = true
 end