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93 minimal_zgui_win32_d3d12 segfault on exit · Issue #566 · zig-gamedev/zig-gamedev · GitHub
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minimal_zgui_win32_d3d12 segfault on exit #566

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hazeycode opened this issue Apr 20, 2024 · 2 comments
Open

minimal_zgui_win32_d3d12 segfault on exit #566

hazeycode opened this issue Apr 20, 2024 · 2 comments
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0.7.0

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@hazeycode
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hazeycode commented Apr 20, 2024 •
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segfaults on exit for me:

Segmentation fault at address 0x7ffd108a83f8
...\zig-gamedev\samples\minimal_zgui_win32_d3d12\src\minimal_zgui_win32_d3d12.zig:39:22: 0xd61293 in main (minimal_zgui_win32_d3d12.exe.obj)
    defer gctx.deinit(allocator);

only happens when I use the close button and not esc

Originally posted by @Pyrolistical in #562 (comment)
@hazeycode hazeycode added the bug Something isn't working label Apr 20, 2024
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might be related, but pressing the button fails to print "Button pressed" in console

@hazeycode hazeycode added this to the 0.7.0 milestone Jun 15, 2024
@hazeycode hazeycode added the demo label Nov 2, 2024
@clembu
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clembu commented Feb 23, 2025

The segfault doesn't happen if you handle WM_CLOSE messages to PostQuitMessage().

The demo should handle that message.
The DefWindowProcA(...) in the windows APIs will destroy the window on a WM_CLOSE, which I guess means the graphical context is freed by the time the WM_QUIT message sent from the handling of WM_DESTROY reaches the main event loop.

See also:
https://learn.microsoft.com/en-us/windows/win32/winmsg/wm-close
https://learn.microsoft.com/en-us/windows/win32/winmsg/wm-destroy

@hazeycode hazeycode removed bug Something isn't working demo labels May 5, 2025
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