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[PATCH v3 0/1] MR9240: ntdll: Fix (Nt|Zw)WaitForMultipleObjects signature.
by Rémi Bernon (＠rbernon) 21 Oct '25

21 Oct '25

The functions take a WAIT_TYPE argument instead of a BOOLEAN. This causes test failures in kernel32:sync when compiled with clang and optimizations enabled, as it optimizes away clearing the higher bytes of the register used for the WAIT_TYPE argument, leaving set bits in the higher bytes ending up with an invalid WAIT_TYPE value. -- v3: ntdll: Fix (Nt|Zw)WaitForMultipleObjects signature. https://gitlab.winehq.org/wine/wine/-/merge_requests/9240

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[PATCH v2 0/1] MR9240: ntdll: Fix (Nt|Zw)WaitForMultipleObjects signature.
by Rémi Bernon (＠rbernon) 21 Oct '25

21 Oct '25

The functions take a WAIT_TYPE argument instead of a BOOLEAN. This causes test failures in kernel32:sync when compiled with clang and optimizations enabled, as it optimizes away clearing the higher bytes of the register used for the WAIT_TYPE argument, leaving set bits in the higher bytes ending up with an invalid WAIT_TYPE value. -- v2: ntdll: Fix (Nt|Zw)WaitForMultipleObjects signature. https://gitlab.winehq.org/wine/wine/-/merge_requests/9240

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[PATCH v2 0/1] MR9218: ntdll: Stop unwinding on access violation.
by Dylan Donnell (＠dy-tea) 21 Oct '25

21 Oct '25

Unwinding should stop on access violation. This matches windows behavior. Below is a test that demonstrates the problem: ```c #include <windows.h> #include <stdio.h> int main() { void *retaddr = __builtin_extract_return_addr(__builtin_return_address(0)); DWORD64 imagebase; UNWIND_HISTORY_TABLE table; RUNTIME_FUNCTION *rf = RtlLookupFunctionEntry((DWORD64)retaddr, &imagebase, &table); DWORD old; VirtualProtect(rf, 0x100, PAGE_READWRITE, &old); rf->UnwindData = 0x12345678; VirtualProtect(rf, 0x100, old, &old); void *bt[100]; RtlCaptureStackBackTrace(0, 100, bt, NULL); return 0; } ``` This crashes on wine but not on windows. -- v2: ntdll: Stop unwinding on access violation. https://gitlab.winehq.org/wine/wine/-/merge_requests/9218

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[PATCH v2 0/7] MR9027: winegcc: Force subsystem version to 5.2 on both Clang and MinGW.
by Rémi Bernon (＠rbernon) 21 Oct '25

21 Oct '25

This would hopefully fix some comctl32 test failures which started happening after I changed my nightly winetest runs to build Wine with Clang. -- v2: winegcc: Force default subsystem version to MSVC modern values. user32/tests: Force console subsystem version 5.2. quartz/tests: Force console subsystem version 5.2. dxgi/tests: Force console subsystem version 5.2. comctl32/tests: Force console subsystem version 5.2. winegcc: Support subsystem version number in link.exe-style cmdline. winegcc: Consistently use the subsystem option with Clang and MinGW. https://gitlab.winehq.org/wine/wine/-/merge_requests/9027

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[PATCH 0/1] MR9239: winex11: Give colormap ownership to the surface after it's allocated.
by Rémi Bernon (＠rbernon) 21 Oct '25

21 Oct '25

Should fix some remaining `XFreeColormap` X errors. -- https://gitlab.winehq.org/wine/wine/-/merge_requests/9239

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[PATCH 0/2] MR9215: iphlpapi/tests: Give GetBestRoute2 a SOCKETADDR_INET. (ASan)
by Bernhard Übelacker (＠bernhardu) 21 Oct '25

21 Oct '25

The test also calls GetBestRoute2 with only the smaller sockaddr_in but reads inside the whole SOCKADDR_INET type. Therefore I recived this ASan report, reading 28 bytes from variable with only 16 bytes. The second patch removes a few unneeded casts to SOCKADDR_INET. But there are more which ASan does not complain about here, should they also be changed to a SOCKADDR_INET type? CC: @yshui , @gofman Followup to 93a3d8bf9f (!9085) / ada093a6d2 (!8991). <details> <summary>ASan details:</summary> ``` ================================================================= ==iphlpapi_test.exe==560==ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7ffffe1ff440 at pc 0x6ffffe86c02b bp 0x7ffffe1fe630 sp 0x7ffffe1fe678 READ of size 28 at 0x7ffffe1ff440 thread T0 #0 0x6ffffe86c02a in __asan_memcpy /home/runner/work/llvm-mingw/llvm-mingw/llvm-project/compiler-rt/lib/asan/asan_interceptors_memintrinsics.cpp:65:3 #1 0x6ffffb1b869a in GetBestRoute2 .../wine/dlls/iphlpapi/iphlpapi_main.c:4851:20 #2 0x00014000e0b2 in test_best_routes .../wine/dlls/iphlpapi/tests/iphlpapi.c:3908:11 #3 0x00014000123f in func_iphlpapi .../wine/dlls/iphlpapi/tests/iphlpapi.c:4017:5 #4 0x000140022bb2 in run_test .../wine/include/wine/test.h:765:5 #5 0x00014002262c in main .../wine/include/wine/test.h #6 0x0001400247ba in mainCRTStartup .../wine/dlls/msvcrt/crt_main.c:62:11 #7 0x6fffffc377b0 in BaseThreadInitThunk .../wine/dlls/kernel32/thread.c:61:24 #8 0x6fffffdc05b6 in RtlUserThreadStart (C:\windows\system32\ntdll.dll+0x1700505b6) Address 0x7ffffe1ff440 is located in stack of thread T0 at offset 384 in frame #0 0x00014000b3cf in test_best_routes .../wine/dlls/iphlpapi/tests/iphlpapi.c:3503 This frame has 17 object(s): [32, 36) 'index' (line 3506) [48, 76) 'dst6' (line 3507) [112, 140) 'src6' (line 3507) [176, 204) 'best6' (line 3507) [240, 268) 'link_local_addr6' (line 3507) [304, 332) 'global_addr6' (line 3507) [368, 384) 'dst4' (line 3508) [400, 416) 'src4' (line 3508) <== Memory access at offset 384 partially underflows this variable [432, 448) 'global_addr4' (line 3508) [464, 472) 'link_local_luid' (line 3509) [496, 504) 'luid' (line 3509) [528, 608) 'uni_row' (line 3510) [640, 744) 'fwd_row' (line 3511) [784, 792) 'table' (line 3512) [816, 1072) 's' (line 3513) [1136, 1392) 's2' (line 3513) [1456, 1484) 'best4' (line 3514) HINT: this may be a false positive if your program uses some custom stack unwind mechanism, swapcontext or vfork (longjmp, SEH and C++ exceptions *are* supported) SUMMARY: AddressSanitizer: stack-buffer-overflow .../wine/dlls/iphlpapi/iphlpapi_main.c:4851:20 in GetBestRoute2 Shadow bytes around the buggy address: 0x7ffffe1ff180: f2 f2 f2 f2 04 f3 f3 f3 00 00 00 00 00 00 00 00 0x7ffffe1ff200: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x7ffffe1ff280: 00 00 00 00 00 00 00 00 f1 f1 f1 f1 04 f2 00 00 0x7ffffe1ff300: 00 04 f2 f2 f2 f2 00 00 00 04 f2 f2 f2 f2 00 00 0x7ffffe1ff380: 00 04 f2 f2 f2 f2 00 00 00 04 f2 f2 f2 f2 00 00 =>0x7ffffe1ff400: 00 04 f2 f2 f2 f2 00 00[f2]f2 00 00 f2 f2 00 00 0x7ffffe1ff480: f2 f2 00 f2 f2 f2 00 f2 f2 f2 00 00 00 00 00 00 0x7ffffe1ff500: 00 00 00 00 f2 f2 f2 f2 00 00 00 00 00 00 00 00 0x7ffffe1ff580: 00 00 00 00 00 f2 f2 f2 f2 f2 00 f2 f2 f2 00 00 0x7ffffe1ff600: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 0x7ffffe1ff680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f2 f2 Shadow byte legend (one shadow byte represents 8 application bytes): Addressable: 00 Partially addressable: 01 02 03 04 05 06 07 Heap left redzone: fa Freed heap region: fd Stack left redzone: f1 Stack mid redzone: f2 Stack right redzone: f3 Stack after return: f5 Stack use after scope: f8 Global redzone: f9 Global init order: f6 Poisoned by user: f7 Container overflow: fc Array cookie: ac Intra object redzone: bb ASan internal: fe Left alloca redzone: ca Right alloca redzone: cb Thread 1 "0204" hit Breakpoint 5, GetBestRoute2 (luid=<optimized out>, luid@entry=0x0, index=index@entry=2, src=src@entry=0x0, dst=dst@entry=0x7ffffe2ff7b0, options=<optimized out>, options@entry=0, bestroute=<optimized out>, bestroute@entry=0x7ffffe2ff8f0, bestaddress=<optimized out>, bestaddress@entry=0x7ffffe2ff880) at .../wine/dlls/iphlpapi/iphlpapi_main.c:4851 4851 dst_addr = *dst; Wine-gdb> bt #0 GetBestRoute2 (luid=<optimized out>, luid@entry=0x0, index=index@entry=2, src=src@entry=0x0, dst=dst@entry=0x7ffffe2ff7b0, options=<optimized out>, options@entry=0, bestroute=<optimized out>, bestroute@entry=0x7ffffe2ff8f0, bestaddress=<optimized out>, bestaddress@entry=0x7ffffe2ff880) at .../wine/dlls/iphlpapi/iphlpapi_main.c:4851 #1 0x0000000140004e57 in test_best_routes () at .../wine/dlls/iphlpapi/tests/iphlpapi.c:3908 #2 func_iphlpapi () at .../wine/dlls/iphlpapi/tests/iphlpapi.c:4017 #3 0x00000001400061dd in run_test (name=name@entry=0x14001b21b <winetest_color_reset+189> "iphlpapi") at .../wine/include/wine/test.h:765 #4 0x0000000140005ec4 in main (argc=<optimized out>, argv=<optimized out>) at .../wine/include/wine/test.h:877 Wine-gdb> print dst $1 = (const SOCKADDR_INET *) 0x7ffffe2ff7b0 Wine-gdb> print sizeof(*dst) $2 = 28 Wine-gdb> up #1 0x0000000140004e57 in test_best_routes () at .../wine/dlls/iphlpapi/tests/iphlpapi.c:3908 3908 ret = GetBestRoute2( NULL, default_route_index, NULL, (SOCKADDR_INET *)&dst4, 0, &fwd_row, (SOCKADDR_INET *)&best4 ); Wine-gdb> print &dst4 $3 = (struct sockaddr_in *) 0x7ffffe2ff7b0 Wine-gdb> print sizeof(dst4) $4 = 16 Wine-gdb> ``` </details> -- https://gitlab.winehq.org/wine/wine/-/merge_requests/9215

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[PATCH v3 0/1] MR9196: win32u: Set the process idle event from the client side.
by Rémi Bernon (＠rbernon) 21 Oct '25

21 Oct '25

This should fix winemenubuilder timing out on startup with ntsync. -- v3: win32u: Set the process idle event from the client side. https://gitlab.winehq.org/wine/wine/-/merge_requests/9196

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[PATCH 0/1] MR9237: kernelbase: Remove an unused NtQueryInformationFile() from MoveFileWithProgress().
by Elizabeth Figura (＠zfigura) 21 Oct '25

21 Oct '25

-- https://gitlab.winehq.org/wine/wine/-/merge_requests/9237

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[PATCH 0/4] MR9183: win32u: Use float intermediate values for dpi and monitor scaling.
by Conor McCarthy (＠cmccarthy) 21 Oct '25

21 Oct '25

-- https://gitlab.winehq.org/wine/wine/-/merge_requests/9183

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[PATCH 0/1] MR9236: kernel32: Avoid RBP-based frame in BaseThreadInitThunk() on x64.
by Paul Gofman (＠gofman) 20 Oct '25

20 Oct '25

-- https://gitlab.winehq.org/wine/wine/-/merge_requests/9236

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