Yukihiro "Matz" Matsumoto 3533335aa0 mruby-io: cap puts recursion depth to prevent C stack overflow ...

io_puts_ary recursed unconditionally on nested arrays. For cyclic
arrays (a = []; a << a; puts a) or pathologically deep arrays,
this caused a C stack overflow.

Add a depth cap (IO_PUTS_MAX_DEPTH = 16); on overflow, write
"[...]\n" and return, matching CRuby's behavior on cycles. The
pattern mirrors mruby-set's MAX_NESTED_DEPTH for the same problem
shape (pure C recursion not dispatched as a Ruby method).

Reported by OSS-Fuzz (clusterfuzz testcase 6233530857488384).

Co-authored-by: Claude <noreply@anthropic.com>
(cherry picked from commit 7dfd560df8)

2026-05-30 01:31:48 +08:00

..

file_test.c

mruby.h: include mruby/presym.h for all source files

2026-03-09 16:50:58 +09:00

file.c

mruby.h: include mruby/presym.h for all source files

2026-03-09 16:50:58 +09:00

io.c

mruby-io: cap puts recursion depth to prevent C stack overflow

2026-05-30 01:31:48 +08:00

mruby_io_gem.c

init.c, mruby-io: undef DONE macro

2026-01-01 13:18:33 +09:00