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[PATCH v2 0/1] MR11740: compobj: Ensure compobj_malloc is initialized in CoGetMalloc16.
by Alex Henrie (＠alexhenrie) Aug. 24, 2026

Aug. 24, 2026

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=60229 -- v2: compobj: Ensure compobj_malloc is initialized in CoGetMalloc16. https://gitlab.winehq.org/wine/wine/-/merge_requests/11740

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[PATCH 0/2] MR11739: pdh: Avoid access violation in PdhCloseQuery if a bad handle is passed.
by Ziia Shi (＠mkrsym1) Aug. 24, 2026

Aug. 24, 2026

This behavior is observed in the global release of the game Wuthering Waves, specifically in the Tencent PerfSight component. -- https://gitlab.winehq.org/wine/wine/-/merge_requests/11739

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[PATCH 0/2] MR11738: win87em, krnl386: Set and call application-defined floating-point error handler.
by Alex Henrie (＠alexhenrie) Aug. 24, 2026

Aug. 24, 2026

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=60230 -- https://gitlab.winehq.org/wine/wine/-/merge_requests/11738

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[PATCH v2 0/2] MR11717: faudio: Initialize COM before creating the WMA decoder.
by Nello De Gregoris (＠bluechxin) Aug. 23, 2026

Aug. 23, 2026

Found while testing STEINS;GATE RE:BOOT (https://store.steampowered.com/app/4012810/STEINSGATE_REBOOT/) The visual novel voiceovers were not playing and every time one was supposed to play, the following showed up in logs: `err:ole:com_get_class_object apartment not initialised` Tracing this led me to `FAudio_WMADEC_init`, which runs CoCreateInstance on the thread the application called IXAudio2::CreateSourceVoice() from, with FAudio however never initializing COM on that path. That makes combase then reject the call with the decoder never being created. I believe most games don't run into this because Media Foundation is usually initialized before this code path is hit, which leaves a process-wide MTA in place. Since the voiceovers play correctly on Windows, handling it in FAudio seemed like the right call. -- v2: faudio: Initialize MTA in FAudio_PlatformAddRef(). xaudio2/tests: Test creating an xWMA source voice without COM. https://gitlab.winehq.org/wine/wine/-/merge_requests/11717

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[PATCH 0/1] MR11736: ntdll: Keep reserved area bounds page aligned when avoiding 4GB wrap-around
by Nat Brown (＠natbro) Aug. 23, 2026

Aug. 23, 2026

A latent issue found in ntdll while adding Apple Silicon macOS host support for building Proton (https://github.com/ValveSoftware/Proton/pull/10087) Proton's Wine version builds and then runs 64-bit and 32-bit versions of wine in order to create a base prefix as part of a redistributable package phase, all within a guest linux/amd64 container. 32-bit i386 processes translate with QEMU in this host context, while 64-bit x86_64 uses the host's Rosetta 2 translation system. It is likely but not confirmed that QEMU would similarly be used and 32-bit wine would fail to run when virtualizing linux/amd64 on linux/arm64 hardware. mmap_add_reserved_area() and mmap_remove_reserved_area() trim a single byte when addr + size wraps to 0, which leaves an area whose end is 0xffffffff. alloc_virtual_heap() then derives its mapping address from that end and passes an unaligned address to anon_mmap_fixed(), tripping the alignment assertions added in d813ffc3557 (ntdll: Align virtual memory allocations to the host page size). Trim a whole page instead so the area bounds stay aligned. The wrap-around trim dates to 94d74b5fedf (2004), long before the alignment invariant existed. It is only reached when a reserved area ends exactly at 4GB, which requires mmap_init() to take the reserve_area( user_space_limit, 0 ) branch -- that is, when the initial stack is not near the top of the 32-bit address space. Native Linux and all other native x86 platforms place it near the top, so the branch is dead there; qemu-user lays out the guest address space itself and maps the stack around 0x40000000, making it reachable and aborting every 32-bit process at startup. Nothing verifies requested against recorded area bounds, and the top 64k allocation granularity block was already unusable due to the one-byte trim, so widening it to a page costs nothing allocatable. -- https://gitlab.winehq.org/wine/wine/-/merge_requests/11736

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[PATCH 0/1] MR11735: mfplat/tests: Remove todo on now succeeding test.
by Nikolay Sivov (＠nsivov) Aug. 23, 2026

Aug. 23, 2026

This one was fixed by d3d11 changes e980a920092d5f16aa75bb4a5c6d8a3bb8d32cfc. Signed-off-by: Nikolay Sivov <nsivov(a)codeweavers.com> -- https://gitlab.winehq.org/wine/wine/-/merge_requests/11735

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[PATCH v50 0/9] MR7650: Add support for AF_UNIX sockets (followup)
by Ralf Habacker (＠rhabacker) Aug. 23, 2026

Aug. 23, 2026

Follow-up of !2786, which appears to have been abandoned. Depends on !8182, !8575, !8578, !8863, !9831, !9835 # Execute minimal test case 1. checkout wine into \~/src/wine 2. in dlls/ws2_32/tests/sock.c wrap all calls to test functions after `Init()` until `test_afunix()` with #if 0 ... #endif 3. build into \~/src/wine-build 4. run ``` (cd ~/src/wine-build; \ WINEPREFIX=~/src/wine/.wine \ ../wine/tools/runtest -q -P wine -T . -M ws2_32.dll \ -p dlls/ws2_32/tests/i386-windows/ws2_32_test.exe sock) ``` or without the wrapper and some imported wine debug channels enabled ``` (cd ~/src/wine-build; WINEPREFIX=~/src/wine/.wine \ WINEDEBUG=+file,+winsock \ WINEDLLOVERRIDES=';ws2_32.dll=b' \ WINETEST_PLATFORM=wine \ ./wine dlls/ws2_32/tests/i386-windows/ws2_32_test.exe sock) ``` # How to debug wineserver Since `wineserver` runs in the background, simple calls to printf() will show nothing when the test case is executed. A workaround is to open a file and call fprintf() to write debug messages to this file, which can then be inspected. The wineserver man page mentions that there is limited support to control wineserver debugging by using `WINEDEBUG=+server` ``` -d[n], --debug[=n] Set the debug level to n. 0 means no debugging information, 1 is the normal level, and 2 is for extra verbose debugging. If n is not specified, the default is 1. The debug output will be sent to stderr. wine(1) will automatically enable normal level debugging when starting wineserver if the +server option is set in the WINEDEBUG variable. ``` However, higher levels probably cannot be set in this way. # Problems with synchronized log output - The Windows test binary prints test failures to stdout (line-buffered or fully buffered). - Wine/Wineserver debug prints to stderr (unbuffered). When merged into a single stream (stderr+stdout), stdout lines get fragmented and interleaved between Wine/Wineserver trace messages., which looks like this: ``` 012c:trace:file:NtWriteFile (0xd,(nil),(nil),(nil),0x6afd40,0x4190bc,0x00000012,(nil),(nil)) [?25lsock.c[?25h012c:trace:file:NtWriteFile = SUCCESS (18) 0124:trace:file:NtDeviceIoControlFile (0x10,(nil),(nil),(nil),0x74ddd0,0x00504000,(nil),0x00000000,0x74ddcc,0x00000004)xts={} ) ``` Unfortunately, synchronized logs are important for analyzing processes. Combining synchronized strace and wine trace messages can be generated with ``` #!/bin/bash -x p=$PWD cd ~/src/wine-build WINEPREFIX=~/src/wine/.wine \ WINEDEBUG=+file,+winsock \ WINEDLLOVERRIDES=';ws2_32.dll=b' \ WINETEST_PLATFORM=wine \ stdbuf -o0 -eL strace -tt -f -o strace.log \ ./wine dlls/ws2_32/tests/i386-windows/ws2_32_test.exe sock 2>&1 | ts 'WINE %H:%M:%.S' > wine.log cat wine.log strace.log | grep -v 'write(\|read(\|rt_sigprocmask' | sort -k 2 > $p/trace.log ``` # How to debug a wine test case At https://gitlab.winehq.org/wine/wine/-/blob/master/tools/runtest#L151 there is mentioned a environment variable name `WINETEST_WRAPPER`, with which it may be possible to run gdb to debug test cases ``` (cd ~/src/wine-build; make -j10 ;\ WINETEST_WRAPPER="gdb --args" \ WINEPREFIX=~/src/wine/.wine \ ../wine/tools/runtest -P wine -T . -M ws2_32.dll \ -p dlls/ws2_32/tests/i386-windows/ws2_32_test.exe sock) Reading symbols from ./wine... (gdb) set follow-fork-mode child (gdb) r current directory: 'Z:\home\ralf.habacker\src\wine-build' sock.c:14624: Test failed: test_afunix.sock: wrong attr ffffffff sock.c:14658: Test failed: test_afunix.sock: wrong family 0 sock.c:14693: Test failed: test_afunix.sock: wrong family 0 ... ``` or without the wrapper and some important debug channels enabled ``` (cd ~/src/wine-build; \ make -j10; \ WINEDEBUG=+file,+winsock \ WINEDLLOVERRIDES=';ws2_32.dll=b' \ WINETEST_PLATFORM=wine \ gdb --args ./wine dlls/ws2_32/tests/i386-windows/ws2_32_test.exe sock) ``` With this you can debug the wine application, but unfortunally not the windows api. # How to debug a wine test case (windows api) 1. After building wine install the binaries into a temporary location ``` make -C ~/src/wine-build install DESTDIR=~/src/wine-install ``` 2. run ``` (cd ../wine-build; \ WINEPREFIX=~/src/wine/.wine \ WINEDLLOVERRIDES=';ws2_32.dll=b' \ WINETEST_PLATFORM=wine \ ./wine programs/winedbg/i386-windows/winedbg.exe --gdb dlls/ws2_32/tests/i386-windows/ws2_32_test.exe sock) ``` Now let's look at the loaded shared libraries ``` Wine-gdb> info sharedlibrary From To Syms Read Shared Object Library 0xf7b39000 0xf7bff6e0 Yes /home/user/src/wine-build/dlls/ntdll/ntdll.so 0x00401000 0x00478e2c Yes /home/user/src/wine-build/dlls/ws2_32/tests/i386-windows/ws2_32_test.exe 0x7bcc1000 0x7bd69280 Yes /home/user/src/wine/.wine/drive_c/windows/system32/ntdll.dll 0x7bb31000 0x7bb91594 Yes /home/user/src/wine/.wine/drive_c/windows/system32/kernel32.dll 0x7b5b1000 0x7b841f38 Yes /home/user/src/wine/.wine/drive_c/windows/system32/kernelbase.dll 0x77fd1000 0x77ff89d8 Yes /home/user/src/wine/.wine/drive_c/windows/system32/iphlpapi.dll 0x7b4b1000 0x7b4ebcb8 Yes /home/user/src/wine/.wine/drive_c/windows/system32/advapi32.dll 0x7b1e1000 0x7b280014 Yes /home/user/src/wine/.wine/drive_c/windows/system32/msvcrt.dll 0x7b151000 0x7b16de40 Yes /home/user/src/wine/.wine/drive_c/windows/system32/sechost.dll 0x7adf1000 0x7aec2690 Yes /home/user/src/wine/.wine/drive_c/windows/system32/ucrtbase.dll 0x77f71000 0x77f85a80 Yes /home/user/src/wine/.wine/drive_c/windows/system32/dnsapi.dll 0x77f31000 0x77f3b240 Yes /home/user/src/wine/.wine/drive_c/windows/system32/nsi.dll 0x7ad41000 0x7ad6653c Yes /home/user/src/wine/.wine/drive_c/windows/system32/ws2_32.dll 0x7a111000 0x7a2cc55c Yes /home/user/src/wine/.wine/drive_c/windows/system32/user32.dll 0x7a631000 0x7a6ae67c Yes /home/user/src/wine/.wine/drive_c/windows/system32/gdi32.dll 0x7a0b1000 0x7a0e48e8 Yes /home/user/src/wine/.wine/drive_c/windows/system32/win32u.dll 0x78121000 0x7813de90 Yes /home/user/src/wine/.wine/drive_c/windows/system32/imm32.dll ``` It is visible, that the unix variant of the shared libraries (ntdll.so) are read from the build dir and also the test case. The Windows part (\*.dll) is loaded from the wine prefix, so that these must be copied from the build directory initially and whenever changes are made. With this is possible to set breakpoints ``` Wine-gdb> b GetFileAttributesW@4 Breakpoint 1 at 0x7b5d3725: file ../wine/dlls/kernelbase/file.c, line 1665. Wine-gdb> c Continuing. Breakpoint 1, GetFileAttributesW@4 ( name=0x40fcfa <test_afunix+1434> L"\xec83\x8304\xfff8\x940f\x89c0\x247c\xf08\xc0b6\x44c7\x424\x1bbf\103\x489\xe824\x52e6\001\x44c7", <incomplete sequence \x824>) at ../wine/dlls/kernelbase/file.c:1665 1665 TRACE( "%s\n", debugstr_w(name) ); ``` # Followup By adding `WINESYSTEMDLLPATH=/home/user/src/wine-install/usr/local/lib/wine/i386-windows/` to the command line, some shared libraries are loaded directly from the build directory, so they do not need to be copied. ``` From To Syms Read Shared Object Library 0xf7eb2000 0xf7f786e0 Yes /home/user/src/wine-build/dlls/ntdll/ntdll.so 0x00401000 0x00478e2c Yes /home/user/src/wine-build/dlls/ws2_32/tests/i386-windows/ws2_32_test.exe 0x7bcc1000 0x7bd69280 Yes /home/user/src/wine/.wine/drive_c/windows/system32/ntdll.dll 0x7bb31000 0x7bb91594 Yes /home/user/src/wine/.wine/drive_c/windows/system32/kernel32.dll 0x7b5b1000 0x7b841f38 Yes /home/user/src/wine/.wine/drive_c/windows/system32/kernelbase.dll 0x77fd1000 0x77ff89d8 Yes /home/user/src/wine/.wine/drive_c/windows/system32/iphlpapi.dll 0x7b4b1000 0x7b4ebcb8 Yes /home/user/src/wine-install/usr/local/lib/wine/i386-windows/advapi32.dll 0x7b1e1000 0x7b280014 Yes /home/user/src/wine-install/usr/local/lib/wine/i386-windows/msvcrt.dll 0x7b151000 0x7b16de40 Yes /home/user/src/wine-install/usr/local/lib/wine/i386-windows/sechost.dll 0x7adf1000 0x7aec2690 Yes /home/user/src/wine-install/usr/local/lib/wine/i386-windows/ucrtbase.dll 0x77f71000 0x77f85a80 Yes /home/user/src/wine/.wine/drive_c/windows/system32/dnsapi.dll 0x77f31000 0x77f3b240 Yes /home/user/src/wine/.wine/drive_c/windows/system32/nsi.dll 0x7ad41000 0x7ad6653c Yes /home/user/src/wine-install/usr/local/lib/wine/i386-windows/ws2_32.dll 0x7a111000 0x7a2cc55c Yes /home/user/src/wine-install/usr/local/lib/wine/i386-windows/user32.dll 0x7a631000 0x7a6ae67c Yes /home/user/src/wine-install/usr/local/lib/wine/i386-windows/gdi32.dll 0x79e31000 0x79e648e8 Yes /home/user/src/wine-install/usr/local/lib/wine/i386-windows/win32u.dll 0x78121000 0x7813de90 Yes /home/user/src/wine/.wine/drive_c/windows/system32/imm32.dll ``` Why this does not apply to all system libraries is currently unclear. It would help if at least ntdll.dll could be loaded from the build directory as it gets several changes here. -- v50: server: open bound AF_UNIX sockets as reparse points server: give AF_UNIX sockets their family before bind ntdll: report bound AF_UNIX sockets as reparse points server: harden the AF_UNIX socket path handling ws2_32: Add note in bind() for AF_UNIX sockets server: Fix getsockname() and accept() on AF_UNIX sockets. server: Introduce error when attempting to create a SOCK_DGRAM AF_UNIX socket. ws2_32: Add support for AF_UNIX sockets. server: Allow for deletion of socket files. https://gitlab.winehq.org/wine/wine/-/merge_requests/7650

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[PATCH 0/1] MR11734: include: Add IMFTimedText* definitions.
by Nikolay Sivov (＠nsivov) Aug. 23, 2026

Aug. 23, 2026

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=60223 Signed-off-by: Nikolay Sivov <nsivov(a)codeweavers.com> -- https://gitlab.winehq.org/wine/wine/-/merge_requests/11734

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Re: [PATCH v5 0/1] MR11667: win32u: Update menu bar item layout before tracking menu (fixes Reason 3.0 to 14 not opening the menu bar)
by Schroedingers Cat (＠Schroedingers-Cat) Aug. 22, 2026

Aug. 22, 2026

@rbernon could you take a look at this tiny bugfix PR? I made it now consist only of a single commit as requested. If there is anything else I can do to improve it for upstreaming, let me know! -- https://gitlab.winehq.org/wine/wine/-/merge_requests/11667#note_149606

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[PATCH v74 0/6] MR10567: wined3d: fix SRGB RTV fail for UNORM swapchain backbuffers > 1 for d3d10/11
by Stian Low (＠stianlow) Aug. 22, 2026

Aug. 22, 2026

wined3d: fix vk swapchain rendering too dark by supporting UNORM to SRGB conversion for brightness similar to gl This merge request addresses: https://bugs.winehq.org/show_bug.cgi?id=45364 Frostpunk is very dark Very dark rendering issues for Frostpunk seem to match the same problem for Vulkan renderer for "Against the Storm": - https://bugs.winehq.org/show_bug.cgi?id=58632 - https://bugs.winehq.org/attachment.cgi?id=80656 Running both games with gl renderer seems to fix excessive darkness: - https://bugs.winehq.org/attachment.cgi?id=80654 - https://bugs.winehq.org/attachment.cgi?id=80690 Vulkan renderer seems to be missing SRGB conversion handling availiable for GL renderer. GL renderer can be forced to render darker the same as Vulkan by bypassing EXT_TEXTURE_SRGB support for ./dlls/wined3d/utils.c: ``` @@ -3133,7 +3146,7 @@ static BOOL init_format_texture_info(struct wined3d_adapter *adapter, struct win continue; copy_format(adapter, &srgb_format->f, &format->f); +#if 000 if (gl_info->supported[EXT_TEXTURE_SRGB] && !(adapter->d3d_info.wined3d_creation_flags & WINED3D_SRGB_READ_WRITE_CONTROL)) { @@ -3142,6 +3155,7 @@ static BOOL init_format_texture_info(struct wined3d_adapter *adapter, struct win format_set_caps(&srgb_format->f, WINED3D_FORMAT_CAP_SRGB_READ | WINED3D_FORMAT_CAP_SRGB_WRITE); query_internal_format(adapter, srgb_format, &format_texture_info[i], gl_info, TRUE); } +#endif } ``` This merge request patch allows Vulkan renderer to perform SRGB conversion for wined3d_swapchain_vk_select_vk_format() to mimic the GL capability. Changing VkSwapchainCreateInfoKHR imageColorSpace from VK_COLOR_SPACE_SRGB_NONLINEAR_KHR for `wined3d_swapchain_vk_create_vulkan_swapchain()` had no effect despite enabling VK_EXT_swapchain_colorspace for dlls/win32u/vulkan.c `convert_instance_create_info():` https://docs.vulkan.org/refpages/latest/refpages/source/VkColorSpaceKHR.html Therefore converting UNORM to SRGB was chosen similar to how the GL renderer seems to handle it: ``` static const struct wined3d_format_srgb_info format_srgb_info[] = { {WINED3DFMT_R8G8B8A8_UNORM_SRGB, WINED3DFMT_R8G8B8A8_UNORM}, {WINED3DFMT_BC1_UNORM_SRGB, WINED3DFMT_BC1_UNORM}, {WINED3DFMT_BC2_UNORM_SRGB, WINED3DFMT_BC2_UNORM}, {WINED3DFMT_BC3_UNORM_SRGB, WINED3DFMT_BC3_UNORM}, {WINED3DFMT_B8G8R8A8_UNORM_SRGB, WINED3DFMT_B8G8R8A8_UNORM}, {WINED3DFMT_B8G8R8X8_UNORM_SRGB, WINED3DFMT_B8G8R8X8_UNORM}, {WINED3DFMT_BC7_UNORM_SRGB, WINED3DFMT_BC7_UNORM}, }; ``` Its unclear whether SRGB conversion should always happen or only for particular games so the patch leaves the Vulkan renderer without SRGB conversion by default. Therefore the patch adds a new WINE_D3D_CONFIG flag named "vk_swap_srgb" to force the Vulkan renderer to perform SRGB conversion for the swapchain. By default vk_swap_srgb is set to FALSE or 0: `WINE_D3D_CONFIG=vk_swap_srgb=0,renderer=vulkan` To force vk_swap_srgb to TRUE or 1: `WINE_D3D_CONFIG=vk_swap_srgb=1,renderer=vulkan` For example, launching Frostpunk via the following after the patch fixes the dark rendering for Vulkan and appears brighter similar to the GL renderer: `WINEDEBUG=-all mangohud --dlsym WINE_D3D_CONFIG=csmt=0x1,renderer=vulkan,vk_swap_srgb=1 WINEPREFIX=/home/any/wine_stianlow_wow64_new_pfx ~/tmp/wine_stianlow_wow64_new_install/bin/wine /home/any/wine_stianlow_wow64_new_pfx/drive_c/GOG\ Games/Frostpunk/Frostpunk.exe` Some SRGB handling was added several years ago but not for mapping UNORM to SRGB that this patch adds: ``` 6f55c8d1c56 * wined3d: Use an sRGB fallback format for sRGB formats in wined3d_swapchain_vk_select_vk_format(). Author: Henri Verbeet <hverbeet(a)codeweavers.com> CommitDate: Wed Dec 9 16:29:28 2020 +0100 ``` If UNORM to SRGB should be enabled by default then this patch may be changed so that vk_swap_srgb defaults to TRUE. -- v74: wined3d: rotate wined3d_swapchain_rendertarget_view (MR-10567) wined3d: gl fix srgb texture2d_blt_fbo (MR-10567) wined3d: gl impl wined3d_swapchain_rendertarget_view (MR-10567) wined3d: vk impl wined3d_swapchain_rendertarget_view (MR-10567) wined3d: add wined3d_swapchain_rendertarget_view lists (MR-10567) wined3d/tests: todo srgb rtvs, unorm swapchain backbuf > 1 (MR-10567) https://gitlab.winehq.org/wine/wine/-/merge_requests/10567

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