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Yukihiro "Matz" Matsumoto
e50f15c1c6
The JMPNOT-to-JMPIF optimization assumed fail_pos always came from a 4-byte JMPNOT instruction. When a pinned variable is undefined, NODE_PAT_PIN generates a 3-byte OP_JMP instead, causing fail_pos - 2 to point into the previous instruction and corrupt its operand. Add a check to verify the instruction at fail_pos - 2 is actually OP_JMPNOT before modifying it. Fixes #6701 Co-authored-by: Claude <noreply@anthropic.com>
mruby-compiler
This mrbgem provides the mruby compiler, which is responsible for parsing Ruby code and generating mruby bytecode.
Functionality
The mruby-compiler gem includes the following components:
- Parser: Translates Ruby source code into an abstract syntax tree (AST).
- Code Generator: Traverses the AST to produce executable mruby bytecode.
mrbcexecutable: A command-line tool for compiling.rbfiles into.mrbbytecode files.
Usage
The mrbc (mruby-bin-mrbc) executable will generate compiled binary from Ruby
programs via this gem.
Example of using mrbc:
# Compile a Ruby script to bytecode
bin/mrbc my_script.rb
# Run the compiled script
bin/mruby my_script.mrb