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[PATCH v2 0/4] MR10192: kernelbase: Handle \\?\ prefix in GetLongPathNameW
by Vishnunithyasoundhar S (＠svishnunithyasoundhar) Feb. 26, 2026

Feb. 26, 2026

The current implementation of GetLongPathNameW triggers a FIXME and returns the original path when it encounters a UNC prefix. While true network UNC paths remain unimplemented, this change allows extended-length local paths (starting with \\?\) to be resolved by stripping the prefix and processing the underlying local path. This fixes issues where applications (such as xalia) passing absolute paths with the extended-length prefix would fail to receive a normalized or resolved long path. ``` 881.036:00d4:00d8:fixme:file:GetLongPathNameW UNC pathname L"\\\\?\\Z:\\home\\vishnunithyasoundhars\\.steam\\debian-installation\\compatibilitytools.d\\debug_build\\files\\share\\wine/../xalia/xalia.exe" ``` Tested: After change with added debug log ``` 22272.558:00d4:00d8:fixme:file:GetLongPathNameW DEBUG: Success! Returning path: L"Z:\\home\\vishnunithyasoundhars\\.steam\\debian-installation\\compatibilitytools.d\\debug_build\\files\\share\\wine/../xalia/xalia.exe" (Length: 125) ``` Signed-off-by: Vishnunithyasoundhar S svishnunithyasoundhar(a)gmail.com -- v2: Fix tests https://gitlab.winehq.org/wine/wine/-/merge_requests/10192

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[PATCH v2 0/3] MR10190: winu32: Try harder to replace the old drawable everywhere.
by Paul Gofman (＠gofman) Feb. 26, 2026

Feb. 26, 2026

-- v2: win32u: Also try to use DC own drawable in get_updated_drawable() when context is flushed. win32u: Do not keep old drawable as window unused if it was replaced. opengl32: Don't access drawable after wgl_context_flush() in flush_context(). https://gitlab.winehq.org/wine/wine/-/merge_requests/10190

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[PATCH v2 0/6] MR10196: Implement VariantCompare.
by eric pouech (＠epo) Feb. 26, 2026

Feb. 26, 2026

-- v2: propsys: Implement VariantCompare(). propsys/tests: Add tests for VariantCompare(). propsys: Add stub for VariantCompare(). propsys: Add proper support for VT_R4 in PropVariantCompareEx? propsys/tests: Add some tests in PropVariantCompareEx. include: Add definition for VariantCompare in propvarutil.h https://gitlab.winehq.org/wine/wine/-/merge_requests/10196

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[PATCH v24 0/18] MR7111: support building Wine with LTO
by Konstantin Demin (＠rockdrilla) Feb. 26, 2026

Feb. 26, 2026

relevant bug reports: - https://bugs.winehq.org/show_bug.cgi?id=41712 - https://bugs.winehq.org/show_bug.cgi?id=51051 -- v24: configure: enable LTO by default [DO NOT MERGE] ntoskrnl: move i386 specific Rtl*ByteSwap() into separate source. ntoskrnl: move _chkstk() / __chkstk() into separate source. msvcrt: move i386 specific _ftol() into separate source. kernel32: move x86-64 specific GetProcAddress() into separate source. kernel32: move i386 specific Interlocked*() into separate source. kernel32: move i386 specific ExitProcess() into separate source. kernelbase: move x86-64 specific GetProcAddress() into separate source. ntdll: move i386 specific Rtl*ByteSwap() into separate source. tools: add LTO quirks. makedep: support skipping/disabling LTO. configure: enable building Wine with LTO. makedep: support LTO builds. winegcc: support LTO builds. winebuild: support LTO builds. tools: helper functions for LTO builds. ntdll: add attribute "used" to a few symbols that should not be discarded. loader: add attribute "used" to a few symbols that should not be discarded. This merge request has too many patches to be relayed via email. Please visit the URL below to see the contents of the merge request. https://gitlab.winehq.org/wine/wine/-/merge_requests/7111

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Re: [PATCH v7 0/1] MR10174: bcryptprimitives: Abort if `ProcessPrng` fails
by Christopher Denton (＠cdenton) Feb. 26, 2026

Feb. 26, 2026

On Thu Feb 26 07:38:26 2026 +0000, Hans Leidekker wrote: > Even if called once it can still fail. I think we should pass the error > instead of asserting and give the app a chance to handle it. Likely only > a few will actually check for errors from RtlGenRandom() but those that > do will get a chance to clean up and notify the user. To be consistent with Windows behaviour, bcryptprimitives.dll could fail to load if it's not possible to get the `/dev/urandom` fd. This could be done by simply attempting to get some random data when in DllMain. -- https://gitlab.winehq.org/wine/wine/-/merge_requests/10174#note_130602

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[PATCH 0/1] MR10197: mmdevapi/tests: Use temporary during reallocation (ASan).
by Bernhard Übelacker Feb. 26, 2026

Feb. 26, 2026

Followup of d7e358c7. CC: @giomasce It seems `base_fmt` points to memory inside the `wave_formats`, which may be no longer valid after reallocation. <details> <summary>ASan details, [gitlab run](https://gitlab.winehq.org/bernhardu/wine/-/jobs/231755#L2473)</summary> ``` ==mmdevapi_test.exe==848==ERROR: AddressSanitizer: heap-use-after-free on address 0x02400110 at pc 0x78654532 bp 0x0022f9e0 sp 0x0022f5b0 READ of size 40 at 0x02400110 thread T0 #0 0x78654531 in __asan_memcpy /home/runner/work/llvm-mingw/llvm-mingw/llvm-project/compiler-rt/lib/asan/asan_interceptors_memintrinsics.cpp:65:3 #1 0x00416bfc in push_wave_format_with_context /builds/bernhardu/wine/build64/../dlls/mmdevapi/tests/render.c:526:46 #2 0x00416b75 in repush_wave_format_as_unextensible /builds/bernhardu/wine/build64/../dlls/mmdevapi/tests/render.c:550:11 #3 0x00416041 in fill_wave_formats /builds/bernhardu/wine/build64/../dlls/mmdevapi/tests/render.c:705:5 #4 0x004181f3 in test_audioclient /builds/bernhardu/wine/build64/../dlls/mmdevapi/tests/render.c:260:9 #5 0x0041703d in func_render /builds/bernhardu/wine/build64/../dlls/mmdevapi/tests/render.c:3211:5 #6 0x004340a1 in run_test /builds/bernhardu/wine/build64/../include/wine/test.h:780:5 #7 0x00433b5a in main /builds/bernhardu/wine/build64/../include/wine/test.h:900:12 #8 0x004359a5 in mainCRTStartup /builds/bernhardu/wine/build64/../dlls/msvcrt/crt_main.c:62:11 #9 0x7bcd367f in BaseThreadInitThunk (C:\windows\system32\kernel32.dll+0x7b82367f) #10 0x7be4677a in call_thread_func_wrapper (C:\windows\system32\ntdll.dll+0x7bc4677a) #11 0x7be470ea in call_thread_func /builds/bernhardu/wine/build64/../dlls/ntdll/signal_i386.c:503:9 0x02400110 is located 0 bytes inside of 44-byte region [0x02400110,0x0240013c) freed by thread T0 here: #0 0x78656013 in __asan::SharedReAlloc(void* (void*, unsigned long, void*, unsigned int) stdcall*, unsigned int (void*, unsigned long, void*) stdcall*, int (void*, unsigned long, void*) stdcall*, void* (void*, unsigned long, unsigned int) stdcall*, void*, unsigned long, void*, unsigned int) /home/runner/work/llvm-mingw/llvm-mingw/llvm-project/compiler-rt/lib/asan/asan_malloc_win.cpp:276:3 #1 0x786563f8 in HeapReAlloc /home/runner/work/llvm-mingw/llvm-mingw/llvm-project/compiler-rt/lib/asan/asan_malloc_win.cpp:408:10 #2 0x79ddf67a in realloc /builds/bernhardu/wine/build64/../dlls/msvcrt/heap.c:462:20 #3 0x00416bd7 in push_wave_format_with_context /builds/bernhardu/wine/build64/../dlls/mmdevapi/tests/render.c:521:24 #4 0x00416b75 in repush_wave_format_as_unextensible /builds/bernhardu/wine/build64/../dlls/mmdevapi/tests/render.c:550:11 #5 0x00416041 in fill_wave_formats /builds/bernhardu/wine/build64/../dlls/mmdevapi/tests/render.c:705:5 #6 0x004181f3 in test_audioclient /builds/bernhardu/wine/build64/../dlls/mmdevapi/tests/render.c:260:9 #7 0x0041703d in func_render /builds/bernhardu/wine/build64/../dlls/mmdevapi/tests/render.c:3211:5 #8 0x004340a1 in run_test /builds/bernhardu/wine/build64/../include/wine/test.h:780:5 #9 0x00433b5a in main /builds/bernhardu/wine/build64/../include/wine/test.h:900:12 #10 0x004359a5 in mainCRTStartup /builds/bernhardu/wine/build64/../dlls/msvcrt/crt_main.c:62:11 #11 0x7bcd367f in BaseThreadInitThunk (C:\windows\system32\kernel32.dll+0x7b82367f) #12 0x7be4677a in call_thread_func_wrapper (C:\windows\system32\ntdll.dll+0x7bc4677a) #13 0x7be470ea in call_thread_func /builds/bernhardu/wine/build64/../dlls/ntdll/signal_i386.c:503:9 previously allocated by thread T0 here: #0 0x78655d76 in HeapAlloc /home/runner/work/llvm-mingw/llvm-mingw/llvm-project/compiler-rt/lib/asan/asan_malloc_win.cpp:237:3 #1 0x79ddeedc in msvcrt_heap_alloc /builds/bernhardu/wine/build64/../dlls/msvcrt/heap.c:71:12 #2 0x79ddf618 in malloc /builds/bernhardu/wine/build64/../dlls/msvcrt/heap.c:436:15 #3 0x79ddf682 in realloc /builds/bernhardu/wine/build64/../dlls/msvcrt/heap.c:461:20 #4 0x00416bd7 in push_wave_format_with_context /builds/bernhardu/wine/build64/../dlls/mmdevapi/tests/render.c:521:24 #5 0x00416b2b in push_wave_format /builds/bernhardu/wine/build64/../dlls/mmdevapi/tests/render.c:534:12 #6 0x0041603c in fill_wave_formats /builds/bernhardu/wine/build64/../dlls/mmdevapi/tests/render.c:704:5 #7 0x004181f3 in test_audioclient /builds/bernhardu/wine/build64/../dlls/mmdevapi/tests/render.c:260:9 #8 0x0041703d in func_render /builds/bernhardu/wine/build64/../dlls/mmdevapi/tests/render.c:3211:5 #9 0x004340a1 in run_test /builds/bernhardu/wine/build64/../include/wine/test.h:780:5 #10 0x00433b5a in main /builds/bernhardu/wine/build64/../include/wine/test.h:900:12 #11 0x004359a5 in mainCRTStartup /builds/bernhardu/wine/build64/../dlls/msvcrt/crt_main.c:62:11 #12 0x7bcd367f in BaseThreadInitThunk (C:\windows\system32\kernel32.dll+0x7b82367f) #13 0x7be4677a in call_thread_func_wrapper (C:\windows\system32\ntdll.dll+0x7bc4677a) #14 0x7be470ea in call_thread_func /builds/bernhardu/wine/build64/../dlls/ntdll/signal_i386.c:503:9 SUMMARY: AddressSanitizer: heap-use-after-free /builds/bernhardu/wine/build64/../dlls/mmdevapi/tests/render.c:526:46 in push_wave_format_with_context``` </details> -- https://gitlab.winehq.org/wine/wine/-/merge_requests/10197

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Re: [PATCH v6 0/1] MR10187: bcryptprimitives: Ensure ProcessPrng fills the whole buffer
by Christopher Denton (＠cdenton) Feb. 26, 2026

Feb. 26, 2026

I'm not sure if this can be tested in CI due to the need for a single large allocation (>4gb). -- https://gitlab.winehq.org/wine/wine/-/merge_requests/10187#note_130600

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[PATCH 0/2] MR10190: winu32: Try harder to replace the old drawable everywhere.
by Paul Gofman (＠gofman) Feb. 26, 2026

Feb. 26, 2026

-- https://gitlab.winehq.org/wine/wine/-/merge_requests/10190

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[PATCH 0/5] MR10196: Implement VariantCompare.
by eric pouech (＠epo) Feb. 26, 2026

Feb. 26, 2026

-- https://gitlab.winehq.org/wine/wine/-/merge_requests/10196

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[PATCH v5 0/1] MR10187: bcryptprimitives: Ensure ProcessPrng fills the whole buffer
by Christopher Denton (＠cdenton) Feb. 26, 2026

Feb. 26, 2026

[`ProcessPrng`](https://learn.microsoft.com/en-us/windows/win32/seccng/processprng) takes a `SIZE_T` argument for its length whereas [`RtlGenRandom`](https://learn.microsoft.com/en-us/windows/win32/api/ntsecapi/nf-ntsecapi-rtlgenrandom) takes a `ULONG`, which may be smaller. -- v5: bcryptprimitives: Ensure ProcessPrng fills the whole buffer https://gitlab.winehq.org/wine/wine/-/merge_requests/10187

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