mruby 2.1.1 Release Notes

We are announcing the stable release of mruby 2.1 series - mruby 2.1.1.

New Features

Core Language Features

Ruby 2.7 features

• Numbered parameters as default block parameters are introduced. (72d57ad0)

Core Libraries

Ruby 2.7 features

• Revert Implement Ruby2.7’s frozen strings from Symbol#to_s. (a367373f)

Update Features

Core Language Features

• Always enable the rational and complex literals. (351c9c80)

Core Libraries

• The #prepend_features and #module_function methods are not haves for class objects. (cc52fa66)
• Remove location info from Exception#inspect. (d2f2f9db)
• Allow true/false argument to Kernel#exit. (mrbgems/mruby-exit) (d81e4d71)
• Improved the judgment of absolute path on Windows. #4950

Tools

• Support short options concatenation to mruby command. (9de7130a)
• Support -- (end of options) to mruby command. (f4b528e0)
• Quit mruby -v immediately if no program is given for Ruby compatibility. (49653b81)

for mruby Developer

• Add assertion to RVALUE size. (6cf99d12)

Compatibility

Core Libraries

• Add File#size and File#truncate. (mrbgems/mruby-io) (6d9ac89f)
• Add IO#pread and IO#pwrite. (mrbgems/mruby-io) (4c6d524c)
• Support bit flags for IO.open. (mrbgems/mruby-io) (69619aee)

Changes

Build system

• Abandon minirake. Use rake for compilation.
  Currently, minirake is left for compatibility, but it will be removed in the future. (de17f63)

Breaking Changes

• Remove MRB_INT16 configuration option. (ff57c027)

Major bug fixes

• Parser rejects heredoc without following comma or closing bracket in array/hash literal. #4796
• Segfault due to invalid read in str_init_shared. #4807
• Invalid read in array_copy and mrb_ary_unshift_m. #4808
• Parser segfault (invalid read) in local_add_f. #4810
• Parser rejects some heredoc in hash literal. #4815
• Rakefile in mruby build emits warnings with Windows paths. #4817
• Coredump when use ensure in Kernel#eval script. #4833
• Fix keyword arguments not be obtained with mrb_get_args(). #4855
• Undefined method `Pathname’ for MRuby::Toolchain::Android. #4895
• Cygwin compile error. #4904
• String#to_f should not allow hexdecimal format. #4924
• Heap use after free in hash_values_at in mrbgems/mruby-hash-ext/src/hash-ext.c:33. #4926
• The method name becomes call in backtrace inside a block outside a method. #4936
• Segmentation fault at mrbgems/mruby-metaprog/src/metaprog.c:142. #4955
• Test mruby-io in tmpdir when AF_UNIX cannot be created on cwd. #4981
• IO#readlines/IO#getc hangs while reading over TCPSocket #4982
• p->locals may be NULL when error occurs before the point. oss-fuzz: Issue 19886
• Fix buffer overflow in mrb_str_len_to_dbl. oss-fuzz: Issue 19902
• Fix file/directory name parameter for git command.
• Fix MRB_FIXNUM_SHIFT with MRB_WORD_BOXING, MRB_INT32 and MRB_64BIT.
• Build when directories and files have spaces.
• Fix argument specs of below methods.
  • Exception
Exception#exception.
  • IO (mrbgems/mruby-io)
    IO._popen, IO.for_fd, IO.select, IO.sysopen, IO.new, IO#sysread and IO#sysseek.
  • File (mrbgems/mruby-io)
    File.umask.
  • Integer
Integer#ceil, Integer#floor, Integer#round and Integer#truncate.
  • Kernel
BasicObject#instance_eval, Kernel#integer, Kernel#define_singleton_method, Kernel#send, Kernel#proc, Kernel#sprintf, Kernel#format and Kernel#respond_to?.
  • Hash
Hash.new and Hash#default.
  • Fiber (mrbgems/mruby-fiber)
    Fiber.new.