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authorMihai Moldovan <ïonic@ionic.de>2016-05-27 15:52:50 +0000
committerMihai Moldovan <ïonic@ionic.de>2016-06-13 15:06:36 +0000
commit639a2c36f3a52f206d9b408ffc4580edc05f1392 (patch)
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nx-X11/programs/Xserver/hw/nxagent/Handlers.h: fix stack smashing related to different data type sizes between Xserver and Xlib.
While on the X server side we were expecting a 32bit value, the Xlib side in nxcompext wrote a 64bit integer to the 32bit location, hence overwriting "random" data on the stack (most notably the return adress.) We can work around this by using the Xlib-based Window data type on the server-side as well, but this problem is likely a more general one. Calling functions from libcompext in nxagent sounds like a bad idea. Other code locations might well be affected by issues alike to that as well. In order to silence compiler warnings, use a "macro hack" for overriding the "Window" type in NXlib.h.
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