mruby-mruby/doc/mruby3.3.md

User visible changes in mruby3.3 from mruby3.2

The language

• aliases work properly with super
• callee method work differently with aliases in mruby
• define Kernel#respond_to_missing? method
• _inspect method (inspect with recursive check) is removed
• __printstr method is removed; use print instead

Configuration

• mruby can be built using Docker now. Try docker-compose build for example.
• New Platform: Nintendo Wii
• Improved Platforms: Android, Dreamcast

mruby memory API

• mrb_default_allocf can be overridden by the application
• mrb_open_allocf will be deprecated

mruby VM and bytecode

• #5870 Use OP_LOADINEG instead of OP_LOADI

Changes in mrbgems

• mruby-bin-config: new options --cxx,--cxxflags,--as,--asflags,--objc,--objcflags
• mruby-binding-eval (merged with mruby-eval) #5989
• mruby-binding: renamed from mruby-binding-core
• mruby-enumerator: remove internal attribute methods obj, args, kwd, meth, fib.
• mruby-fiber: Add a new mrb_fiber_new() with MRB_API
• mruby-fiber: Allows calling Fiber#resume from C
• mruby-fiber: Fiber#to_s format changed
• mruby-io: Add "x" mode option for IO.open
• mruby-method: Method#to_s format changed
• mruby-pack: support new directives j,J,b,B
• mruby-range-ext: new method Range#overlap?
• mruby-string-ext: Add String#valid_encoding? method

Bugs Fixed

• #5712 No "make install"
• #5724 Rational#** is missing
• #5725 weird const_missing exceptions in mrblib code
• #5789 No memory release of backtrace information due to stack error
• #5943 TCPSocket#write is failed
• #5944 Behavior of calling method with a hash variable
• #5949 Caller appears to report wrong line when block passed and brackets omitted
• #5974 Invalid escape sequences in gem_init.c on windows
• #5975 Equals comparison fails on extreme ends of 64-bit integers
• #5985 Sign extension with OP_LOADI32 in get_int_operand()
• #5986 Fix bugs in String#bytesplice
• #5987 ~(-1 << 64) is incorrect
• #5991 'gets' method not working in mruby-3.2.0
• #5995 One seemingly unnecessary parameter is passed in the block parameters
• #6029 mruby build fails under mrbgems directory
• #6041 GC Performance may have degraded
• #6051 Null pointer dereference in mrb_addrinfo_unix_path
• #6052 Null pointer dereference while handling the Proc class
• #6065 Null pointer dereference while handling the Proc class
• #6066 Null pointer dereference involving Struct.new()
• #6067 Null pointer dereference in mrb_string_value_cstr
• #6068 Stack overflow in mrb_vm_exec
• #6087 'Remote branch HEAD not found in upstream origin' error on build
• #6089 binding.eval() handles def expressions differently from CRuby
• #6098 Fails to call superclass of wrapped method
• #6108 VM crashes with break
• #6134 String#unpack1 returns an array instead of a single string

Pull Requests (User Visible Ones)

• #5870 Use OP_LOADINEG instead of OP_LOADI
• #5966 Update default.gembox add mruby debugger mrdb
• #5979 Allow Class#allocate to be prohibited
• #5989 Integrate mruby-binding-eval into mruby-eval
• #5961 Add Docker to build and run all mruby tests. Run pre-commit and generate YARD docs with Docker
• #6008 Make "bintest" independent of directory
• #6009 Avoid adding <MRUBY_ROOT>/bintest which does not exist
• #6012 Allow tests to be disabled for specific gems; warn about disabled tests
• #6013 Fix Android toolchain
• #6032 Rake: update task clean to remove bin and build folders
• #6045 Fixes escape sequence bug and enhancements in Presym scanning
• #6076 Fixed unwinding block that could point to invalid PC
• #6081 Add "x" mode option for IO.open
• #6086 Add build config for Nintendo Wii
• #6097 Add a new mrb_fiber_new() with MRB_API
• #6106 Ease fiber limitations
• #6118 Fixed IO#read with buf
• #6120 Set EBADF if check_file_descriptor() fails