Yukihiro "Matz" Matsumoto 5eca2fae1e rational.c: fix undefined behavior from large shift exponents ...

In rational_new_f(), the code performed ((mrb_int)1)<<exp without
checking if exp >= MRB_INT_BIT. Shifting by a value >= bit width
is undefined behavior in C.

Also fixed the negative exponent case which incorrectly used
deno >>= exp (right-shift by negative is UB). The correct logic
is deno <<= -exp to multiply denominator by 2^(-exp).

Both cases now check for overflow before shifting and fall back
to bigint operations when necessary.

Discovered via ClusterFuzz with input "92r**11".

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

2025-12-30 14:28:44 +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

Explicitly include errno.h

2025-10-25 21:05:39 +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: add Array#find and Array#rfind

2025-12-25 18:01:44 +09:00

mruby-benchmark

mruby-benchmark: standardize block parameter spacing

2025-12-11 18:09:09 +09:00

mruby-bigint

bigint.c: fix GCD infinite loop and size handling bugs

2025-12-30 12:04:56 +09:00

mruby-bin-config

mrbgems: add README documentation for mruby-bin-* gems

2025-12-11 18:09:10 +09:00

mruby-bin-debugger

docs: fix pre-commit manual hooks; fix link

2025-12-28 20:28:00 +10:00

mruby-bin-mirb

mruby-bin-mirb: add syntax highlighting for keywords and strings

2025-12-29 11:56:58 +09:00

mruby-bin-mrbc

mrbgems: add README documentation for mruby-bin-* gems

2025-12-11 18:09:10 +09:00

mruby-bin-mruby

mruby-compiler: add no_return_value context flag for script optimization

2025-12-21 17:26:49 +09:00

mruby-bin-strip

mrbgems: add README documentation for mruby-bin-* gems

2025-12-11 18:09:10 +09:00

mruby-binding

mruby-binding: add error helper functions to eliminate goto

2025-11-12 10:25:36 +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

codegen.c: fix stack tracking in pattern match branching code

2025-12-29 22:28:45 +09:00

mruby-complex

mruby-complex: add parentheses to Math method calls

2025-12-11 18:09:08 +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: combine variable declaration with initialization

2025-11-08 14:27:44 +09:00

mruby-encoding

string.c: add mrb_strcasecmp_p for case-insensitive comparison

2025-12-23 10:41:21 +09:00

mruby-enum-chain

mruby-enum-chain: add parentheses to to_enum call

2025-12-11 18:09:06 +09:00

mruby-enum-ext

mruby-enum-ext: fix remaining block parameter spacing

2025-12-11 18:09:09 +09:00

mruby-enum-lazy

mruby-enum-lazy: standardize block parameter spacing

2025-12-11 18:09:09 +09:00

mruby-enumerator

mruby-enumerator: add parentheses to block.call

2025-12-11 18:09:07 +09:00

mruby-errno

mruby-errno: combine variable declaration with initialization

2025-10-27 07:59:20 +09:00

mruby-error

mruby-error: combine variable declaration with initialization

2025-11-08 14:26:49 +09:00

mruby-eval

mruby-eval: rename exec_irep to eval_irep

2025-12-23 08:34:52 +09:00

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

mruby-hash-ext: standardize block parameter spacing

2025-12-11 18:09:09 +09:00

mruby-io

string.c: add mrb_utf8_to_buf() to consolidate UTF-8 encoding

2025-12-18 16:30:03 +09:00

mruby-kernel-ext

mruby-kernel-ext: add error helper function to eliminate goto

2025-11-12 10:25:37 +09:00

mruby-math

mruby-math: combine variable declaration with initialization

2025-10-26 23:30:14 +09:00

mruby-metaprog

Adjust broken license links; clean up Markdown

2025-11-29 01:46:54 +10:00

mruby-method

mruby-method: standardize block parameter spacing

2025-12-11 18:09:10 +09:00

mruby-numeric-ext

mruby-numeric-ext: add Integer#bit_length

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

mruby-object-ext

mruby-object-ext: add parentheses to to_enum call

2025-12-11 18:09:07 +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: rename get_format_info to pack_format_info

2025-12-23 11:02:34 +09:00

mruby-proc-binding

mruby-proc-binding: combine variable declaration with initialization

2025-11-08 14:24:40 +09:00

mruby-proc-ext

mruby-proc-ext: combine variable declaration with initialization

2025-10-26 20:33:06 +09:00

mruby-random

mruby-random: fix FPE in rand_i() for large ranges

2025-12-29 12:54:32 +09:00

mruby-range-ext

Adjust broken license links; clean up Markdown

2025-11-29 01:46:54 +10:00

mruby-rational

rational.c: fix undefined behavior from large shift exponents

2025-12-30 14:28:44 +09:00

mruby-set

mruby-set: standardize block parameter spacing

2025-12-11 18:09:10 +09:00

mruby-sleep

mruby-sleep: combine variable declaration with initialization

2025-10-26 20:01:30 +09:00

mruby-socket

mruby-io: rename mruby/ext/io.h to mruby/io.h

2025-12-11 18:09:11 +09:00

mruby-sprintf

mruby-sprintf: improve initial buffer size estimation

2025-12-29 11:56:58 +09:00

mruby-strftime

mruby-strftime: combine variable declaration with initialization

2025-10-26 19:16:12 +09:00

mruby-string-ext

string.c: add mrb_strcasecmp_p for case-insensitive comparison

2025-12-23 10:41:21 +09:00

mruby-struct

mruby-struct: standardize block parameter spacing

2025-12-11 18:09:09 +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-task: combine variable declaration with initialization

2025-11-08 14:14:44 +09:00

mruby-test

mruby.h: add MRB_OPEN_FAILURE() macro and refactor MRB_OPEN_SUCCESS()

2025-11-16 06:53:02 +09:00

mruby-test-inline-struct

Fix spelling

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

mruby-time

mruby-time: normalize microseconds before converting to nanoseconds

2025-12-01 18:20:44 +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