diff options
| -rw-r--r-- | nx-X11/programs/Xserver/hw/nxagent/Handlers.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/nx-X11/programs/Xserver/hw/nxagent/Handlers.c b/nx-X11/programs/Xserver/hw/nxagent/Handlers.c index cadb8e58a..1beff090b 100644 --- a/nx-X11/programs/Xserver/hw/nxagent/Handlers.c +++ b/nx-X11/programs/Xserver/hw/nxagent/Handlers.c @@ -32,7 +32,10 @@ #include "Screen.h" #include "Millis.h" +#define Window XlibWindow #include <nx/NXlib.h> +#undef Window + #include <nx/Shadow.h> /* @@ -956,7 +959,24 @@ void nxagentShadowWakeupHandler(void * data, int count, void * mask) void nxagentHandleCollectInputFocusEvent(int resource) { - Window window; + /* + * While we don't even need window or revert_to later on, a discrepancy in + * data type sizes between the X server (Window being a 32bit ID) and + * the Xlib (Window being a 64bit ID) will lead to stack corruption here. + * Calling functions from nxcompext from nxagent sounds like a very bad idea + * to begin with, but let's assume that's necessary for now and work around + * the corruption issue. + * + * Even though the NXlib header shows that the function expects a Window-sized + * parameter, it's not the Window type as defined and used within the X.Org + * Server, but an Xlib type. Hence, we'll be using the "XlibWindow" type here + * and to avoid compiler warnings, "rewrite" the NXlib.h header file via + * overriding the original "Window" type with the XlibWindow type, including + * the header file and undefining the macro again, essentially unshadowing + * the original type. + */ + XlibWindow window; + int revert_to; if (NXGetCollectedInputFocus(nxagentDisplay, resource, &window, &revert_to) == 0) |