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Xext/vidmode: avoid null dereference if VidModeCreateMode() allocation fails

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Reported in #1817:
xwayland-24.1.6/redhat-linux-build/../Xext/vidmode.c:96:5: warning[-Wanalyzer-null-argument]: use of NULL ‘VidModeCreateMode()’ where non-null expected

Signed-off-by: Alan Coopersmith <alan.coopersmith@oracle.com>
(cherry picked from commit 5e62aaaf57)

Part-of: <https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/2076>
This commit is contained in:
Alan Coopersmith 2025-10-04 16:20:37 -07:00 • committed by Olivier Fourdan
parent ad999d0c9d
commit ed27eefea9
1 changed files with 4 additions and 0 deletions
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4
Xext/vidmode.c
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@ -808,6 +808,8 @@ ProcVidModeModModeLine(ClientPtr client)
return BadValue;
modetmp = VidModeCreateMode();
if (modetmp == NULL)
return BadAlloc;
VidModeCopyMode(mode, modetmp);
VidModeSetModeValue(modetmp, VIDMODE_H_DISPLAY, stuff->hdisplay);
@ -951,6 +953,8 @@ ProcVidModeValidateModeLine(ClientPtr client)
return BadValue;
modetmp = VidModeCreateMode();
if (modetmp == NULL)
return BadAlloc;
VidModeCopyMode(mode, modetmp);
VidModeSetModeValue(modetmp, VIDMODE_H_DISPLAY, stuff->hdisplay);