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GLX: Check whether client string is NULL

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In very rare cases the X server reports the GLX extension as present but
functions return invalid fallback values.

Closes #912.
This commit is contained in:
paul4334 2016-12-06 15:19:05 -08:00 • committed by Camilla Löwy
parent b0258803c6
commit 9cd378caa7
1 changed files with 1 additions and 1 deletions
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2
src/glx_context.c
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@ -59,7 +59,7 @@ static GLFWbool chooseGLXFBConfig(const _GLFWfbconfig* desired, GLXFBConfig* res
// HACK: This is a (hopefully temporary) workaround for Chromium
// (VirtualBox GL) not setting the window bit on any GLXFBConfigs
vendor = glXGetClientString(_glfw.x11.display, GLX_VENDOR);
if (strcmp(vendor, "Chromium") == 0)
if (vendor && strcmp(vendor, "Chromium") == 0)
trustWindowBit = GLFW_FALSE;
nativeConfigs =