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X11: Fix segfault on Cygwin/X RandR 1.5

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This commit is contained in:
Camilla Löwy 2017-01-16 17:44:31 +01:00
parent 0735250eb1
commit 77eb94409c
2 changed files with 10 additions and 0 deletions
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1
README.md
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@ -123,6 +123,7 @@ information on what to include when reporting a bug.
- [Win32] Bugfix: Deadzone logic could underflow with some controllers (#910) - [Win32] Bugfix: Deadzone logic could underflow with some controllers (#910)
- [Win32] Bugfix: Bitness test in `FindVulkan.cmake` was VS specific (#928) - [Win32] Bugfix: Bitness test in `FindVulkan.cmake` was VS specific (#928)
- [X11] Replaced `_GLFW_HAS_XF86VM` compile-time option with dynamic loading - [X11] Replaced `_GLFW_HAS_XF86VM` compile-time option with dynamic loading
- [X11] Bugfix: `glfwGetVideoMode` would segfault on Cygwin/X
- [Cocoa] Added support for Vulkan window surface creation via - [Cocoa] Added support for Vulkan window surface creation via
[MoltenVK](https://moltengl.com/moltenvk/) (#870) [MoltenVK](https://moltengl.com/moltenvk/) (#870)
- [Cocoa] Bugfix: Disabling window aspect ratio would assert (#852) - [Cocoa] Bugfix: Disabling window aspect ratio would assert (#852)

9
src/x11_init.c
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@ -513,6 +513,15 @@ static GLFWbool initExtensions(void)
_glfw.x11.randr.gammaBroken = GLFW_TRUE; _glfw.x11.randr.gammaBroken = GLFW_TRUE;
} }
if (!sr->ncrtc || !sr->noutput || !sr->nmode)
{
// This is either a headless system or broken Cygwin/X RandR
// Flag it as useless and fall back to Xlib display functions
_glfwInputError(GLFW_PLATFORM_ERROR,
"X11: RandR monitor support seems broken");
_glfw.x11.randr.monitorBroken = GLFW_TRUE;
}
XRRFreeScreenResources(sr); XRRFreeScreenResources(sr);
XRRSelectInput(_glfw.x11.display, _glfw.x11.root, XRRSelectInput(_glfw.x11.display, _glfw.x11.root,