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Yukihiro "Matz" Matsumoto 9982bc1223 random.c: fix signed integer overflow in rand() with integer ranges

rand_range_int() computed `end - begin + 1` in mrb_int before checking
for a reversed or empty range. For extreme bounds the subtraction itself
overflowed mrb_int (UndefinedBehaviorSanitizer signed-integer-overflow),
and the wraparound could turn a reversed range into a positive span,
defeating the guard.

Reject reversed or empty ranges before subtracting, and compute the
candidate count in unsigned arithmetic, so no signed overflow is
possible. A new unsigned uniform sampler draws from the full mrb_int
domain, so valid ranges whose width exceeds MRB_INT_MAX now return a
uniform in-range value instead of nil, matching CRuby.

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

2026-06-05 11:23:43 +09:00

..

hw-adc: add ADC peripheral gem for embedded platforms

2026-04-23 19:25:38 +09:00

Run prek; remove trailing whitespace; cleanup markdown

2026-05-10 14:56:53 +10:00

Run prek; remove trailing whitespace; cleanup markdown

2026-05-10 14:56:53 +10:00

hw-pwm: add PWM peripheral gem for embedded platforms

2026-04-23 19:25:38 +09:00

hw-spi: wrap splat-bearing method signatures as code in README

2026-05-20 08:35:22 +09:00

Run prek; remove trailing whitespace; cleanup markdown

2026-05-10 14:56:53 +10:00

mruby-array-ext

Free the index array immediately at the end of ary_combination_next()

2026-06-01 22:27:59 +09:00

mruby-benchmark

mruby-benchmark: standardize block parameter spacing

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

mruby-bigint: gate mpz_mod's Barrett path on the algorithm's precondition

2026-05-22 07:08:26 +09:00

mruby-bin-config

mruby-bin-config: register installer in products instead of bins

2026-04-25 19:57:44 +09:00

mruby-bin-debugger

mruby-bin-debugger: return on OOM in mrb_debug_set_break_method

2026-05-22 07:08:26 +09:00

mirb.c: add fileno() to _fileno() mapping for MSVC

2026-04-23 19:25:35 +09:00

Don't use #puts in bintest for "mruby-bin-mrb"

2026-05-02 20:52:00 +09:00

mruby-bin-mrbc: skip multi-input debug-info bintest when bin-mruby absent

2026-05-16 21:17:41 +09:00

mruby-bin-mruby

mruby-bin-mruby: skip regexp split bintest when mruby-regexp absent

2026-05-16 20:23:23 +09:00

mruby-bin-strip

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

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

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

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

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

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

mruby-class-ext

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

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

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

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

mruby-compar-ext

docs: replace xml-style markup with markdown in comments

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

mruby-compiler: fix bare nil? in if/unless to use self as receiver

2026-05-30 07:39:45 +09:00

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

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

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

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

mruby-dir: migrate HAL to ports/ directories

2026-04-23 19:25:37 +09:00

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

2026-03-09 16:50:58 +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: fix remaining block parameter spacing

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

mruby-enum-lazy

mruby-enum-lazy: add Enumerator::Lazy#tap_each

2026-04-23 19:25:25 +09:00

mruby-enumerator

mruby-enumerator: add parentheses to block.call

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

mruby-env: add README.md

2026-04-23 19:25:21 +09:00

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

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

mruby-error: combine variable declaration with initialization

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

mruby-eval: unify f_instance_eval and f_class_eval

2026-05-08 11:51:25 +09:00

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

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

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

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

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

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

mruby-io: write literal strings directly via fd_write_buf

2026-05-31 09:09:20 +09:00

mruby-kernel-ext

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

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

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

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

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

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

add alias support to mruby-method and mruby-prox-ext

2026-06-04 17:36:41 +02:00

mruby-numeric-ext

mruby-numeric-ext: avoid signed overflow on Integer#gcd/lcm with MRB_INT_MIN

2026-05-19 12:05:33 +09:00

mruby-object-ext

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

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

mruby-objectspace

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

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

mruby-os-memsize

mruby-os-memsize: support Set class

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

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

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

mruby-proc-binding

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

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

add alias support to mruby-method and mruby-prox-ext

2026-06-04 17:36:41 +02:00

random.c: fix signed integer overflow in rand() with integer ranges

2026-06-05 11:23:43 +09:00

mruby-range-ext

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

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

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

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

mruby-regexp: prefix exposed engine entry points with mrb_re_

2026-05-25 06:09:11 +09:00

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

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

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

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

mruby-socket: implement Socket.ip_address_list

2026-05-09 10:22:19 +09:00

fp_uscale.c: clamp precision in %g to avoid OOB in fixed_width

2026-05-12 11:19:20 +09:00

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

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

mruby-string-ext

mruby-string-ext: skip scrub UTF-8 assertions on non-UTF-8 builds

2026-05-26 23:10:45 +09:00

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

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

mruby-symbol-ext

Merge pull request #2479 from take-cheeze/sym_slice

2026-05-09 10:32:20 +09:00

Merge pull request #6871 from hasumikin/fix/execute_task

2026-05-29 07:05:36 +09:00

mruby-test: write generated C files atomically to avoid race condition

2026-03-25 15:32:36 +09:00

mruby-test-inline-struct

Fix spelling

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

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

2026-03-09 16:50:58 +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-env: add ENV object for environment variable access

2026-04-23 19:25:21 +09:00

stdlib.gembox

mruby-regexp: add $1-$9 globals and include in stdlib gembox

2026-04-23 19:25:29 +09:00