New subject: [Bug 58584] msvcp140: Multiple modern applications using C++ Concurrency crash in CONCRT140.dll on startup

10 Aug 2025


      http://bugs.winehq.org/show_bug.cgi?id=58584
Bug ID: 58584
           Summary: msvcp140: Multiple modern applications using C++
                    Concurrency crash in CONCRT140.dll on startup
           Product: Wine
           Version: 10.12
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: blocker
          Priority: P2
         Component: msvcp
          Assignee: wine-bugs@winehq.org
          Reporter: waser@waser.tech
      Distribution: ---
This report details a consistent, immediate startup crash in `CONCRT140.dll`
affecting modern S.T.A.L.K.E.R. engine forks. These engines are based on the
open-source **Open X-Ray 1.6**, which itself works flawlessly under Wine.
The crash only appears in these newer, more advanced forks which leverage the
MSVC concurrency runtime for performance. This strongly indicates the issue
lies within Wine's implementation of these APIs, not a bug in the engines
themselves. This is effectively a regression, as the baseline engine works
while the newer, concurrency-enabled versions do not.
**Existing Related Bugs:**
This issue appears to be a new, highly reproducible test case for known
problems in Wine's concurrency support. We are filing this as a new report due
to the unique test case and the specific failure point (constructor vs.
destructor), but it is likely caused by the same underlying issues as:
- **Bug 52899:** Notes that `CONCRT140.dll` requires `CreateEventExW` from
`kernel32`. This is the most likely root cause.
- **Bug 41749:** Shows a crash in the destructor for
`Concurrency::details::_TaskCollection`. Our crash occurs in the *constructor*
of this same object, demonstrating a different failing code path.
Our report provides two clear methods to reproduce this crash, including one
that is fully free and requires no commercial software.
---
### **Primary Reproduction Steps (IX-Ray on S.T.A.L.K.E.R.: Call of Pripyat)**
*(Steps 1-5 as in previous draft)*
6.  **Run the Game with Debug Logging:** Launch the game using its main
executable with full debug channels enabled.
    ```bash
    WINEDEBUG=+all wine Stalker-COP.exe &> stalker_cop_crash_all.log
    WINEDEBUG=+seh,+loaddll wine Stalker-COP.exe &> stalker_cop_crash_seh.log
    ```
7.  **Result:** The process will crash immediately. The game's own crash log
(in `_appdata_ixray_/logs`) and the attached Wine debug logs will show a fatal
error in `CONCRT140.dll`.
---
### **Alternative Reproduction Steps (AOEngine on S.T.A.L.K.E.R. Anomaly)**
This method is fully free and requires no commercial game assets.
1.  **Download S.T.A.L.K.E.R. Anomaly:** Download the standalone game from its
[ModDB page](https://www.moddb.com/mods/stalker-anomaly/downloads).
2.  **Download AOEngine:** Download the latest AOEngine release from its [ModDB
addons page](https://www.moddb.com/mods/stalker-anomaly/addons/aoengine).
3.  **Install AOEngine:** Extract the contents into the Anomaly game's `bin`
directory, overwriting `AnomalyDX11.exe`.
4.  **Create a Clean Wine Prefix:**
    ```bash
    export WINEPREFIX=~/.wine_anomaly
    rm -rf $WINEPREFIX && wineboot -u
    ```
5.  **Install Runtimes:**
    ```bash
    winetricks -q vcrun2022 d3dcompiler_47
    ```
6.  **Run the Game with Debug Logging:** Launch the game using the Anomaly
launcher.
    ```bash
    WINEDEBUG=+all wine AnomalyLauncher.exe &> anomaly_crash_all.log
    WINEDEBUG=++seh,+loaddll wine AnomalyLauncher.exe &> anomaly_crash_seh.log
    ```
    (Within the launcher, disable AVX, select DX11, disable the shader cache,
and click Play).
7.  **Result:** The exact same crash behavior as the IX-Ray method will be
observed. The game's crash log will be in `_appdata_/logs` and the full Wine
log will be `anomaly_crash_*.log`.
---
**Expected Behavior:**
The game launcher should appear, and the game should launch to the main menu
successfully, as it does on Windows and as the baseline Open X-Ray 1.6 engine
does under Wine.
**Logs:**
Three files will be attached for the primary reproduction case:
1.  `stalker_cop_crash_seh.log`: A small log with `+seh,+loaddll` for quick
initial review.
2.  `stalker_cop_crash_all.log.bz2`: The complete `+all` debug log, compressed
with bzip2 due to its large size.
3.  `ixray-2025.08.10-02.37.21-waser.log`: The game's own crash log from its
`_appdata_ixray_/logs` directory.
**References:**
- **IX-Ray GitHub (Open Source Engine):**
https://github.com/ixray-team/ixray-1.6-stcop
- **GE-Proton Issue #197 (Full History):**
https://github.com/GloriousEggroll/proton-ge-custom/issues/197
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[Bug 58584] New: msvcp140: Multiple modern applications using C++ Concurrency crash in CONCRT140.dll on startup