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Xext: xtest: extra NULL checks 

Even though these probably never happen, it's still better having some
(really cheap) extra checks, just in case.

| ../Xext/xtest.c: In function ‘ProcXTestFakeInput’:
| ../Xext/xtest.c:385:17: warning: dereference of NULL ‘dev’ [CWE-476] [-Wanalyzer-null-dereference]
|   385 |         if (!dev->key)
|       |              ~~~^~~~~

| ../Xext/xtest.c:442:12: warning: dereference of NULL ‘dev’ [CWE-476] [-Wanalyzer-null-dereference]
|   442 |     if (dev->sendEventsProc)
|       |         ~~~^~~~~~~~~~~~~~~~

Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>
This commit is contained in:
Enrico Weigelt, metux IT consult 2025-05-06 16:54:07 +02:00
parent c4642f2632
commit 6b7d35f71c
1 changed files with 4 additions and 4 deletions
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8
Xext/xtest.c
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@ -384,7 +384,7 @@ ProcXTestFakeInput(ClientPtr client)
switch (type) {
case KeyPress:
case KeyRelease:
if (!dev->key)
if ((!dev) || (!dev->key))
return BadDevice;
if (ev->u.u.detail < dev->key->xkbInfo->desc->min_key_code ||
@ -396,7 +396,7 @@ ProcXTestFakeInput(ClientPtr client)
need_ptr_update = 0;
break;
case MotionNotify:
if (!dev->valuator)
if (!dev || !dev->valuator)
return BadDevice;
if (!(extension || ev->u.keyButtonPointer.root == None)) {
@ -427,7 +427,7 @@ ProcXTestFakeInput(ClientPtr client)
break;
case ButtonPress:
case ButtonRelease:
if (!dev->button)
if (!dev || !dev->button)
return BadDevice;
if (!ev->u.u.detail || ev->u.u.detail > dev->button->numButtons) {
@ -441,7 +441,7 @@ ProcXTestFakeInput(ClientPtr client)
valuator_mask_set_range(&mask, firstValuator, numValuators, valuators);
if (dev->sendEventsProc)
if (dev && dev->sendEventsProc)
(*dev->sendEventsProc) (dev, type, ev->u.u.detail, flags, &mask);
if (need_ptr_update)