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# libX11 - Core X11 protocol client library Documentation for this library can be found in the included man pages, and in the Xlib spec from the specs subdirectory, also available at: - https://www.x.org/releases/current/doc/libX11/libX11/libX11.html - https://www.x.org/releases/current/doc/libX11/libX11/libX11.pdf and the O'Reilly Xlib books, which they have made freely available online, though only for older versions of X11: - X Series Volume 2: Xlib Reference Manual (1989, covers X11R3) https://www.archive.org/details/xlibretmanver1102nyemiss - X Series Volume 2: Xlib Reference Manual, 2nd Edition (1990, covers X11R4) https://www.archive.org/details/xlibrefmanv115ed02nyemiss All questions regarding this software should be directed at the Xorg mailing list: https://lists.x.org/mailman/listinfo/xorg The primary development code repository can be found at: https://gitlab.freedesktop.org/xorg/lib/libX11 Please submit bug reports and requests to merge patches there. For patch submission instructions, see: https://www.x.org/wiki/Development/Documentation/SubmittingPatches ## Release 1.8.12 * x11.pc: Add URL field (!280) * xkb: Bring over fixes from Xserver to shared XKB source files (!279) ## Release 1.8.11 * Close xcb connection after freeing display structure to avoid XIO error when running synchronized (!264) * Don't allocate memory for a zero-sized list of directories when `SetFontPath()` is called with `ndirs == 0` (!266) * Fix `-Werror=array-bounds` build failures with gcc 14.2 when `MALLOC_0_RETURNS_NULL` is defined (!267) * Set `data` field to 0 when initializing new requests (!268) * ximcp: don't leak window if `XGetAtomName()` fails (!269) * ximcp: allow XNArea with OnTheSpot (!270) * ximcp: hide internal functions added in 1.8.10 (!271) * Handle `-Wextra-semi-stmt` warnings from clang (!272) * xkb: avoid undefined behavior due to left shift overflow (#225, !273) * Fix misuse of `UCSConvertCase()` in `XConvertCase()` (!274) * drop `pthread-stubs` dependency on Dragonfly, FreeBSD, & NetBSD (!277) ## Release 1.8.10 * Re-fix XIM input sometimes jumbled (#205, #206, #207, #208, !246) * Fix various static analysis errors (!250) * Add compose sequences for Arabic hamza (!218), Ezh (!221), and hryvnia currency (!259) * Make colormap private interfaces thread safe (#215, !254) * Fix deadlock in XRebindKeysym() (!256) * Assorted memory handling cleanups (!251, !258) * Restore VAX support still in use by NetBSD (!257) ## Release 1.8.9 * Fix regressions introduced in 1.8.8 (!245, !248) - this includes reverting for now the previous "Fix XIM input sometimes jumbled (#198, !236)" ## Release 1.8.8 * Fix XIM input sometimes jumbled (#198, !236) * Fix _XkbReadGetDeviceInfoReply for nButtons == dev->buttons (!237) * Drop ifdefs for platforms that are no longer supported (!242, !243) * Assorted memory handling cleanups ## Release 1.8.7 * Security fixes and hardening in XImage and pixmap handling code (CVE-2023-43786, CVE-2023-43787, !234) * Fix buffer allocation in _XkbReadKeySyms() (CVE-2023-43785) * Fail XOpenDisplay() if server-provided default visual is invalid (!233) * Bring XKB docs in line with actual implementation (!231, !228) * Xutil.h: declare XEmptyRegion() and XEqualRegion() as Bool (!225) * Assorted updates to en_US.UTF-8 compose keys (!213, !214, !215, !216, !217, !219, !220, !222, !223, !226, !227, !229) ## Release 1.8.6 * Add bounds checks in InitExt.c (CVE-2023-3138) ## Release 1.8.5 * autoconf & libtool updates (!187, !188) * Restore missing text in XSetScreenSaver man page (#187, !203) * Update am_ET.UTF-8 compose keys to use dead-vowel symbols, in coordination with xkeyboard-config 2.39 (!205) * Assorted updates to en_US.UTF-8 compose keys (!189, !195, !196, !198, !199, !200, !201, !207, !208, !209) ## Release 1.8.4 * Revert AddressSanitizer fix from 1.8.3 that caused regression (#176, !180) * Add two compose sequences for "capital B with stroke", remove others (!179) * Further improved handling of reentering libX11 via X*IfEvent() calls (!176) ## Release 1.8.3 * Improved handling of reentering libX11 via X*IfEvent() calls (!171, !173) * Fix loading of en_US.UTF-8/XLC_LOCALE (#167, !174) * Add XFreeThreads() and automatic call from a destructor function when thread-safety-constructor is enabled (!167). * Address issues found by UBSan and AddressSanitizer * Fix build with older gcc versions (!169) ## Release 1.8.2 * Allow X*IfEvent() to reenter libX11 to avoid deadlock from unsafe calls when thread-safety-constructor is enabled (!150). * Remove Xlib's pthread function stubs - instead use system provided threads functions, including linking against any needed pthread libraries if thread-safety-constructor is enabled (!155, !156). * Fix off-by-one error in XKeycodeToKeysym for indexes > 3 (!78). * Allow XNSpotLocation with OnTheSpot (!127). * Fix Win32 build when -fno-common is in effect (!140). * Fix memory leak in XRegisterIMInstantiateCallback (!158). * Add compose sequences for the double-struck capitals ℕ ℤ ℚ ℝ ℂ (!144), the Samogitian E with dot above and macron (!147), Unicode minus sign (!163). * Change <Compose> <^> <-> to mean superscript minus instead of macron (!162). * Delete compose sequences that mix top-row digits with numpad digits (!139) or mix upper & lower case letters (!144). * Delete some unuseful compose sequences meant for Bépo layout (!146). * Delete compose sequences using leftcaret & rightcaret keysyms (!163). * Remove KOI8-R character set from en_US.UTF-8/XLC_LOCALE (!148). * Map sr locales to sr_RS compose files (!161). ## Release 1.8.1 * Fix --enable-thread-safety-constructor configure option ## Release 1.8 * Add --enable-thread-safety-constructor configure option (default: enabled) to call XInitThreads() from the library's constructor, thus enabling thread-safety and locking by default. This may expose bugs in clients which did not follow documented rules for calling libX11 functions. * Fix Ethopian (am_ET.UTF-8) compose sequences. * Remove 8 compose sequences that generated the input symbols. * Add compose seuences for abovedot (\<period\> \<space\>), diaeresis (\<quotedbl\> \<space\>), and ogonek (\<semicolon\> \<space\>). ## Release 1.7.5 * Avoids a segfault when an invalid name is used for opening a display. ## Release 1.7.4 * Fixes the "Unknown sequence number" error by allowing backward jumps in the sequence number when widening it. * Any changes to virtual modifiers get propagated properly. * Greek case-conversion tables were updated to Unicode Data 14.0. * Compose sequences for ☮ 🄯 ⇐ ⇑ ⇓ were added, being the following: OY, ()), =<, =^, and =v. * Hammer-and-sickle can be composed with question mark plus backslash. ## Release 1.7.3 * Fixes a hanging issue in _XReply() where the replying thread would wait for an event when another thread was already waiting for one. * Avoids a crash when the X connection gets broken while closing down. ## Release 1.7.2 This is a bug fix release, correcting a regression introduced by and improving the checks from the fix for CVE-2021-31535. ## Release 1.7.1 This is a bug fix release, including a security fix for CVE-2021-31535, nls and documentation corrections. * Reject string longer than USHRT_MAX before sending them on the wire * Fix out-of-bound access in KeySymToUcs4() * nls: allow composing all breved letters also with a lowercase "u" * nls: add 'C.utf8' as an alias for 'en_US.UTF-8' * Nroff code fixes * Comments fixes ## Release 1.7.0 Version 1.7.0 includes a new API, hence the change from the 1.6 series to 1.7: * XSetIOErrorExitHandler which provides a mechanism for applications to recover from I/O error conditions instead of being forced to exit. Thanks to Carlos Garnacho for this. This release includes a bunch of bug fixes, some of which have been pending for over three years: * A bunch of nls cleanups to remove obsolete entries and clean up formatting of the list. Thanks to Benno Schulenberg for these. * Warning fixes and other cleanups across a huge swath of the library. Thanks to Alan Coopersmith for these. * Memory allocation bugs, including leaks and use after free in the locale code. Thanks to Krzesimir Nowak, Jacek Caban and Vittorio Zecca for these. * Thread safety fixes in the locale code. Thanks to Jacek Caban for these. * poll_for_response race condition fix. Thanks to Frediano Ziglio for the bulk of this effort, and to Peter Hutterer for careful review and improvements. Version 1.7.0 includes a couple of new locales: * ia and ie locales. Thanks to Carmina16 for these. There are also numerous compose entries added, including: * |^ or ^| for ↑, |v or v| for ↓, ~~ for ≈. Thanks to Antti Savolainen for this. * Allowing use of 'v' for caron, in addition to 'c', so things like vC for Č, vc for č. Thanks to Benno Schulenberg for this. * Compose sequences LT, lt for '<', and GT, gt for '>' for keyboards where those are difficult to access. Thanks to Jonathan Belsewir for this.
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