Yukihiro "Matz" Matsumoto 01ab2ffc29 mruby-io: fix buffer overflow in io#ungetc; fix #6647 ...

io_unget_data had two issues that caused crashes with repeated ungetc:

1. Integer underflow in buffer size check: "len > MRB_IO_BUF_SIZE - buf->len"
   could underflow when buf->len was large, bypassing reallocation

2. Short overflow: buf->len could exceed SHRT_MAX after multiple ungetc
   calls, causing integer overflow when cast to short

Fixed by checking buf->len + len against both MRB_IO_BUF_SIZE and
SHRT_MAX before buffer operations.

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

2025-10-22 14:04:14 +09:00

..

hal-posix-dir

HAL: rename functions to mrb_hal_<feature>_<name> convention

2025-10-16 09:59:03 +09:00

hal-posix-io

HAL: rename functions to mrb_hal_<feature>_<name> convention

2025-10-16 09:59:03 +09:00

hal-posix-socket

HAL: rename functions to mrb_hal_<feature>_<name> convention

2025-10-16 09:59:03 +09:00

hal-posix-task

HAL: rename functions to mrb_hal_<feature>_<name> convention

2025-10-16 09:59:03 +09:00

hal-win-dir

hal-win-dir: rewrite comment to avoid comment nesting warning

2025-10-16 16:54:25 +09:00

hal-win-io

hal-win-io: fix backtick operator on windows

2025-10-20 08:11:59 +09:00

hal-win-socket

hal-win-socket: guard _WIN32_WINNT definition to prevent redefinition

2025-10-16 16:54:11 +09:00

hal-win-task

hal-win-task: fix integer conversion warning on msvc

2025-10-16 17:02:23 +09:00

mruby-array-ext

mruby-array-ext: hoist RARRAY_PTR calls outside loops

2025-10-22 12:06:46 +09:00

mruby-bigint

mruby-bigint: add explicit cast to mp_limb for range-checked values

2025-10-16 17:06:31 +09:00

mruby-bin-config

Allow to change the output directory name of the libmruby file

2024-06-09 22:49:46 +09:00

mruby-bin-debugger

Merge pull request #6568 from dearblue/debugger1

2025-07-05 16:49:26 +09:00

mruby-bin-mirb

mruby-compiler: removed mrb_state dependency from two functions

2025-05-19 08:00:36 +09:00

mruby-bin-mrbc

gc.c: add mrbc stub for mrb_task_mark_all

2025-10-11 12:41:39 +09:00

mruby-bin-mruby

Stop generating unnecessary C++ files in mruby-bin-mruby

2025-08-31 23:15:23 +09:00

mruby-bin-strip

Add ls-lint with GitHub Actions

2025-05-14 01:14:02 +10:00

mruby-binding

mruby-binding: add comprehensive documentation with examples for binding methods

2025-07-17 12:51:35 +09:00

mruby-catch

mruby-catch: add comprehensive call-seq documentation and helper function comments

2025-08-14 10:52:47 +09:00

mruby-class-ext

mruby-class-ext: fix crash in module comparison with invalid types

2025-10-14 08:22:41 +09:00

mruby-cmath

mruby-cmath: use MRB_SYM() and mrb_define_module_function_id()

2025-10-08 23:55:23 +09:00

mruby-compar-ext

docs: replace xml-style markup with markdown in comments

2025-08-14 10:52:49 +09:00

mruby-compiler

mruby-compiler: fix pr #6643 to use array_node elements field

2025-10-19 07:29:32 +09:00

mruby-complex

mrbgems: add newline before else keyword

2025-08-21 21:49:45 +09:00

mruby-data

docs: replace xml-style markup with markdown in comments

2025-08-14 10:52:49 +09:00

mruby-dir

mruby-dir: use hal-win-dir for mingw

2025-10-16 23:28:27 +09:00

mruby-encoding

mruby-encoding: add missing call-seq documentation for string methods

2025-07-15 11:54:12 +09:00

mruby-enum-chain

mruby-enum-chain: add comprehensive call-seq documentation for enumerator chaining

2025-08-14 10:52:45 +09:00

mruby-enum-ext

docs: replace xml-style markup with markdown in comments

2025-08-14 10:52:49 +09:00

mruby-enum-lazy

mruby-enum-lazy: add comprehensive call-seq documentation for lazy enumeration

2025-08-14 10:52:46 +09:00

mruby-enumerator

docs: replace xml-style markup with markdown in comments

2025-08-14 10:52:49 +09:00

mruby-errno

mruby-errno: add comprehensive call-seq documentation for errno handling

2025-08-14 10:52:46 +09:00

mruby-error

mruby-error: add comprehensive documentation for C API exception handling functions

2025-08-14 10:52:47 +09:00

mruby-eval

mruby-eval fix license link in README

2025-07-29 01:27:49 +10:00

mruby-exit

docs: replace xml-style markup with markdown in comments

2025-08-14 10:52:49 +09:00

mruby-fiber

mruby-fiber,mruby-task: increase stack init size for 32-bit msvc

2025-10-18 23:34:10 +09:00

mruby-hash-ext

docs: replace xml-style markup with markdown in comments

2025-08-14 10:52:49 +09:00

mruby-io

mruby-io: fix buffer overflow in io#ungetc; fix #6647

2025-10-22 14:04:14 +09:00

mruby-kernel-ext

docs: replace xml-style markup with markdown in comments

2025-08-14 10:52:49 +09:00

mruby-math

mruby-math: use mrb_define_module_id instead of mrb_define_module

2025-10-08 23:55:23 +09:00

mruby-metaprog

khash: remove unused mrb parameter from KHASH_FOREACH macro

2025-08-14 10:53:03 +09:00

mruby-method

mruby-method: add comprehensive call-seq documentation for Method extensions

2025-08-14 10:52:46 +09:00

mruby-numeric-ext

mruby-numeric-ext: add Integer#bit_length

2025-08-14 10:53:12 +09:00

mruby-object-ext

docs: replace xml-style markup with markdown in comments

2025-08-14 10:52:49 +09:00

mruby-objectspace

docs: replace xml-style markup with markdown in comments

2025-08-14 10:52:49 +09:00

mruby-os-memsize

mruby-os-memsize: support Set class

2025-06-24 13:56:07 +09:00

mruby-pack

mruby-pack: add explicit casts to fix msvc warnings

2025-10-11 12:47:54 +09:00

mruby-proc-binding

mruby-proc-binding: add comprehensive call-seq documentation and helper function comments

2025-07-17 12:53:58 +09:00

mruby-proc-ext

docs: replace xml-style markup with markdown in comments

2025-08-14 10:52:49 +09:00

mruby-random

mruby-random: split 64-bit state into two 32-bit values on 32-bit platforms

2025-10-16 17:50:03 +09:00

mruby-range-ext

docs: replace xml-style markup with markdown in comments

2025-08-14 10:52:49 +09:00

mruby-rational

mruby-rational: add comprehensive call-seq documentation for Rational methods

2025-08-14 10:52:45 +09:00

mruby-set

mruby-set: fix memory leak from double initialization; fix #6645

2025-10-22 12:06:47 +09:00

mruby-sleep

mruby-sleep,mruby-task: define sleep methods as module functions

2025-10-08 23:55:22 +09:00

mruby-socket

mruby-socket: use hal-win-socket for mingw

2025-10-16 22:45:19 +09:00

mruby-sprintf

mruby-sprintf: use MRB_SYM() and mrb_define_module_function_id()

2025-10-08 23:55:22 +09:00

mruby-strftime

mruby-strftime: prevent crash on msvc with unsupported %- flag

2025-10-19 07:33:45 +09:00

mruby-string-ext

mruby-string-ext: hoist RSTRING_PTR calls in String#tr

2025-10-22 12:06:47 +09:00

mruby-struct

docs: replace xml-style markup with markdown in comments

2025-08-14 10:52:49 +09:00

mruby-symbol-ext

docs: replace xml-style markup with markdown in comments

2025-08-14 10:52:49 +09:00

mruby-task

mruby-fiber,mruby-task: increase stack init size for 32-bit msvc

2025-10-18 23:34:10 +09:00

mruby-test

mruby.h: remove mrb_allocf type

2025-05-10 08:59:18 +09:00

mruby-test-inline-struct

Fix spelling

2024-09-24 00:14:24 +10:00

mruby-time

mruby-time: add mrb_time_get_tm() API for accessing struct tm

2025-10-12 09:33:49 +09:00

mruby-toplevel-ext

mruby-toplevel-ext: add comprehensive call-seq documentation for toplevel include

2025-08-14 10:52:47 +09:00

default-no-fpu.gembox

Specify receivers for gembox methods; ref #5241

2021-01-06 18:10:21 +09:00

default-no-stdio.gembox

Specify receivers for gembox methods; ref #5241

2021-01-06 18:10:21 +09:00

default.gembox

Update default.gembox add mruby debugger mrbd

2023-04-04 19:31:42 +10:00

full-core.gembox

full-core.gembox: exclude mruby-sleep from gembox

2025-10-08 23:55:21 +09:00

math.gembox

math.gembox: exclude mruby-cmath from math gembox

2025-05-14 15:58:23 +09:00

metaprog.gembox

metaprog.gembox: add two binding gems

2025-05-14 15:58:24 +09:00

stdlib-ext.gembox

mruby-data: new gem for Data class introduced in Ruby 3.2

2022-11-29 15:58:05 +09:00

stdlib-io.gembox

mruby-print: disable the gem unless explicitly specified

2025-01-06 13:57:23 +09:00

stdlib.gembox

stdlib.gembox: add mruby-catch to the gembox

2025-05-19 08:00:36 +09:00