Remove useless line of code that contained a bug and triggered a gcc warning. This variable will be overriden before being used anyway. (Bugzilla #5595)

When the local types used to walk the DBE request were changed, this
changed the type of the parameter passed to the DDX SwapBuffers API,
but there wasn't a matching change in the API definition.

At this point, with the API frozen, I just stuck a new variable in
with the correct type. Because we've already bounds-checked nStuff to
be smaller than UINT32_MAX / sizeof(DbeSwapInfoRec), we know it will
fit in a signed int without overflow.

Signed-off-by: Keith Packard <keithp@keithp.com
Reviewed-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Backported-to-NX-by: Ulrich Sibiller <uli42@gmx.de>

LRGB.c: In function ‘LINEAR_RGB_InitSCCData’:
LRGB.c:798:1: warning: label ‘FreeBlueTblElements’ defined but not used [-Wunused-label]
 FreeBlueTblElements:
 ^

Fixes: warning: variable 'req' set but not used [-Wunused-but-set-variable]
       by marking req _X_UNUSED
	Solution was discussed on xorg-devel ML
       Peter Hutter, Alan Coopersmith
        Re: [PATCH libX11 3/5] fix: warning: pointer targets in passing argument 2 of '_XSend' differ in signedness [-Wpointer-sign]

Signed-off-by: harms wharms@bfs.de

fix: warning: pointer targets in passing argument 2 of '_XSend' differ in signedness [-Wpointer-sign]

fix signess warning by casting
Signed-off-by: walter harms <wharms@bfs.de>

simplify code
Signed-off-by: walter harms <wharms@bfs.de>

remove stray extern
Signed-off-by: walter harms <wharms@bfs.de>

XlibInt.c: In function ‘_XIOError’:
XlibInt.c:3750:1: warning: ‘noreturn’ function does return [enabled by default]
 }

After fixing the above a new warning came up, which is also fixed now:

XlibInt.c: In function ‘_XIOError’:
XlibInt.c:3750:1: warning: control reaches end of non-void function [-Wreturn-type]
 }

xkb.c: In function ‘_GetCountedString’:
xkb.c:4405:8: warning: assignment makes integer from pointer without a cast [enabled by default]
     len= (CARD16 *)wire;

This eliminates a warning since we do not have this define in our
build environment.

Window.c: In function ‘nxagentFrameBufferPaintWindow’:
Window.c:1968:31: warning: ISO C forbids assignment between function pointer and ‘void *’ [-Wpedantic]
   PaintWindowBackgroundBackup = pWin->drawable.pScreen -> PaintWindowBackground;

Display.c: In function ‘nxagentCheckForPixmapFormatsCompatibility’:
Display.c:2471:8: warning: variable ‘one_match’ set but not used [-Wunused-but-set-variable]
   bool one_match = false;
        ^

Colormap.c: In function ‘nxagentSetInstalledColormapWindows’:
Colormap.c:314:27: warning: format ‘%p’ expects argument of type ‘void *’, but argument 3 has type ‘WindowPtr’ [-Wformat=]
                           pWin, pWin -> drawable.class);
                           ^

warning: format ‘%u’ expects argument of type ‘unsigned int’, but argument 5 has type ‘long int’ [-Wformat=]

imLcIm.c: In function ‘_XimCreateDefaultTree’:
imLcIm.c:525:11: warning: unused variable ‘cachedir’ [-Wunused-variable]
     char *cachedir = NULL;
           ^
imLcIm.c:521:35: warning: variable ‘intname’ set but not used [-Wunused-but-set-variable]
     char *name, *tmpname = NULL, *intname;

Pending.c: In function ‘XEventsQueued’:
Pending.c:44:5: warning: format ‘%p’ expects argument of type ‘void *’, but argument 3 has type ‘struct Display *’ [-Wformat=]
     fprintf(stderr, "\nXEventsQueued: Called with a display at [%p].\n", dpy);
     ^

all _X11Trans* functions lead to a warnign like this:

implicit declaration of function ‘_X11TransOpenCOTSClient’ [-Wimplicit-function-declaration]

Fix it by partly reverting d3ae0b2c (which removed too much)

Drop nx-X11/lib/X11/libX11.elist. Not needed for anything nowadays. Probably never was needed in nx-X11.

Attributes GH PR #222: https://github.com/ArcticaProject/nx-libs/pull/222

Check if enough bytes were received for specified image type and
geometry. Otherwise GetPixel and other functions could trigger an
out of boundary read later on.
Signed-off-by: Tobias Stoeckmann <tobias@stoeckmann.org>
Reviewed-by: Matthieu Herrb <matthieu@herrb.eu>
Backported-to-NX-by: Ulrich Sibiller <uli42@gmx.de>

v2: FontNames.c  return a NULL list whenever a single
length field from the server is incohent.
Signed-off-by: Tobias Stoeckmann <tobias@stoeckmann.org>
Reviewed-by: Matthieu Herrb <matthieu@herrb.eu>
Backported-to-NX-by: Ulrich Sibiller <uli42@gmx.de>

instead of converting to int and back

Fixes clang warnings of the form:
HVC.c:190:43: warning: implicit conversion changes signedness: 'int' to
      'unsigned long' [-Wsign-conversion]
          if (strncmp(spec, _XcmsTekHVC_prefix, n) != 0) {
              ~~~~~~~
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Backported-to-NX-by: Ulrich Sibiller <uli42@gmx.de>

Clears many gcc warnings of the form:

uvY.c: In function ‘XcmsCIEuvYToCIEXYZ’:
uvY.c:263:19: warning: comparison between signed and unsigned integer
  expressions [-Wsign-compare]
     for (i = 0; i < nColors; i++, pColor++) {
                   ^
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Backported-to-NX-by: Ulrich Sibiller <uli42@gmx.de>

Fixes gcc warnings of the form:

IdOfPr.c: In function ‘XcmsFormatOfPrefix’:
IdOfPr.c:69:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if ((len = strlen(prefix)) >= sizeof(string_buf)) {
                                ^
IdOfPr.c:83:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if (len >= sizeof(string_buf)) Xfree(string_lowered);
           ^
IdOfPr.c:97:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if (len >= sizeof(string_buf)) Xfree(string_lowered);
           ^
IdOfPr.c:104:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if (len >= sizeof(string_buf)) Xfree(string_lowered);
             ^
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Backported-to-NX-by: Ulrich Sibiller <uli42@gmx.de>

The basic rule "put parantheses around macro parameters" should be
observed where possible. Otherwise code like

    ConnectionNumber(foo = bar);

fails to compile. (It obviously passes if ConnectionNumber is a C
function.) There are several other macros amended for the same reason.

This bug appeared while building http://ioccc.org/1993/cmills.c, so
historically it was not present.
Signed-off-by: Dominik Muth <muth@nxdomain.no-ip.biz>
Reviewed-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Backported-to-NX-by: Ulrich Sibiller <uli42@gmx.de>

XkbGetKeyboardByName relies on flags to read the data from the server.

If the X server sends us the wrong flags or if a subreply is smaller
than it should be, XkbGetKeyboardByName will not read all the available
data and leave data in the buffer, which will cause the next _XReply()
to fail with:

[xcb] Extra reply data still left in queue
[xcb] This is most likely caused by a broken X extension library
[xcb] Aborting, sorry about that.
xcb_io.c:576: _XReply: Assertion `!xcb_xlib_extra_reply_data_left' failed.
Aborted

Check if there is some extra data left at the end of
XkbGetKeyboardByName() and discard that data if any is found.

Many thanks to Peter Hutterer <peter.hutterer@who-t.net> for finding the
root cause of the issue and Adam Jackson <ajax@redhat.com> for helping
with the analysis!
Signed-off-by: Olivier Fourdan <ofourdan@redhat.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
Backported-to-NX-by: Ulrich Sibiller <uli42@gmx.de>

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Backported-to-NX-by: Ulrich Sibiller <uli42@gmx.de>

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Backported-to-NX-by: Ulrich Sibiller <uli42@gmx.de>

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Backported-to-NX-by: Ulrich Sibiller <uli42@gmx.de>

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Backported-to-NX-by: Ulrich Sibiller <uli42@gmx.de>

Don't need to test for a case that we already returned for, don't need
to store a count that will only ever be 1 if we didn't return, don't
need to increment pointers to allow storing more than one item when we
can only ever possibly do one.
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Backported-to-NX-by: Ulrich Sibiller <uli42@gmx.de>

Code seems to have been originally written to handle appending multiple
strings, but only ever operates on a single string.
Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Backported-to-NX-by: Ulrich Sibiller <uli42@gmx.de>

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
Backported-to-NX-by: Ulrich Sibiller <uli42@gmx.de>

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
Backported-to-NX-by: Ulrich Sibiller <uli42@gmx.de>