Yukihiro "Matz" Matsumoto 4617263030 mruby-compiler: fix JMPNOT-to-MATCHERR rewriting in pattern match codegen ...

The MATCHERR optimization replaced JMPNOT (BS, 4 bytes) with
MATCHERR (B, 2 bytes) and rewound s->pc by 2. When pattern
alternation (e.g. a|B) dispatched a success jump to s->pc before
the optimization, the rewind shifted subsequent instructions and
the jump landed in the middle of the next instruction, causing
out-of-bounds access at runtime.

Replace JMPNOT in-place with MATCHERR+NOP+NOP to keep the same
4-byte size, so s->pc does not change and jump targets stay valid.

Co-authored-by: Claude <noreply@anthropic.com>

2026-02-10 11:12:27 +09:00

..

codegen.c

mruby-compiler: fix JMPNOT-to-MATCHERR rewriting in pattern match codegen

2026-02-10 11:12:27 +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

parse.y: allow trailing comma in method definition parameters

2026-01-27 15:20:22 +09:00

y.tab.c

parse.y: allow trailing comma in method definition parameters

2026-01-27 15:20:22 +09:00