Merge pull request #4864 from take-cheeze/enable_sanitizer_travis

Enable sanitizer in travis test

travis_config.rb

@@ -4,7 +4,8 @@ MRuby::Build.new('debug') do |conf|
 
   # include all core GEMs
   conf.gembox 'full-core'
-  conf.cc.flags += %w(-Werror=declaration-after-statement)
+  conf.cc.flags += %w(-Werror=declaration-after-statement -fsanitize=address,undefined)
+  conf.linker.flags += %W(-fsanitize=address,undefined)
   conf.compilers.each do |c|
     c.defines += %w(MRB_GC_STRESS MRB_GC_FIXED_ARENA MRB_METHOD_CACHE)
   end
@@ -19,6 +20,8 @@ MRuby::Build.new('full-debug') do |conf|
   # include all core GEMs
   conf.gembox 'full-core'
   conf.cc.defines += %w(MRB_ENABLE_DEBUG_HOOK)
+  conf.cc.flags += %w(-fsanitize=address,undefined)
+  conf.linker.flags += %W(-fsanitize=address,undefined)
 
   conf.enable_test
 end
@@ -28,7 +31,8 @@ MRuby::Build.new do |conf|
 
   # include all core GEMs
   conf.gembox 'full-core'
-  conf.cc.flags += %w(-Werror=declaration-after-statement)
+  conf.cc.flags += %w(-Werror=declaration-after-statement -fsanitize=address,undefined)
+  conf.linker.flags += %W(-fsanitize=address,undefined)
   conf.compilers.each do |c|
     c.defines += %w(MRB_GC_FIXED_ARENA)
   end
@@ -40,7 +44,8 @@ MRuby::Build.new('cxx_abi') do |conf|
   toolchain :gcc
 
   conf.gembox 'full-core'
-  conf.cc.flags += %w(-fpermissive)
+  conf.cc.flags += %w(-fpermissive -fsanitize=address,undefined)
+  conf.linker.flags += %W(-fsanitize=address,undefined)
   conf.compilers.each do |c|
     c.defines += %w(MRB_GC_FIXED_ARENA)
   end