Yukihiro "Matz" Matsumoto e50f15c1c6 mruby-compiler: fix bytecode corruption in pattern matching optimization ...

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>

2026-01-13 16:12:17 +09:00

..

codegen.c

mruby-compiler: fix bytecode corruption in pattern matching optimization

2026-01-13 16:12:17 +09:00

keywords

Fix build for C++ version >= C++11 when enable_cxx_exception; close #5199

2020-12-02 19:15:42 +09:00

lex.def

feat: add pre-commit framework

2021-03-01 10:06:17 +10:00

node.h

mruby-compiler: rename get_node_type to node_type

2025-12-23 12:27:12 +09:00

parse.y

Fix parse error with required kwargs and omitted parens

2026-01-08 00:50:55 +01:00

y.tab.c

Fix parse error with required kwargs and omitted parens

2026-01-08 00:50:55 +01:00