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X11: Fix segfault on Cygwin/X RandR 1.5
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@ -123,6 +123,7 @@ information on what to include when reporting a bug.
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- [Win32] Bugfix: Deadzone logic could underflow with some controllers (#910)
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- [Win32] Bugfix: Bitness test in `FindVulkan.cmake` was VS specific (#928)
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- [X11] Replaced `_GLFW_HAS_XF86VM` compile-time option with dynamic loading
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- [X11] Bugfix: `glfwGetVideoMode` would segfault on Cygwin/X
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- [Cocoa] Added support for Vulkan window surface creation via
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[MoltenVK](https://moltengl.com/moltenvk/) (#870)
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- [Cocoa] Bugfix: Disabling window aspect ratio would assert (#852)
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@ -513,6 +513,15 @@ static GLFWbool initExtensions(void)
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_glfw.x11.randr.gammaBroken = GLFW_TRUE;
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}
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if (!sr->ncrtc || !sr->noutput || !sr->nmode)
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{
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// This is either a headless system or broken Cygwin/X RandR
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// Flag it as useless and fall back to Xlib display functions
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_glfwInputError(GLFW_PLATFORM_ERROR,
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"X11: RandR monitor support seems broken");
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_glfw.x11.randr.monitorBroken = GLFW_TRUE;
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}
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XRRFreeScreenResources(sr);
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XRRSelectInput(_glfw.x11.display, _glfw.x11.root,
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