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XkbWriteCountedString(): return early if str is NULL

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This avoids NULL from being passed to memcpy() later in the code. While
that wasn't an issue before - that value being NULL implied 'size == 0'
so memcpy() wouldn't try to dereference it - it made the code harder
to read and also confused clang.

Signed-off-by: Tomas Carnecky <tom@dbservice.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This commit is contained in:
Tomas Carnecky 2009-12-06 23:52:54 +01:00 committed by Peter Hutterer
parent df2635d464
commit 92d9cb7e13
1 changed files with 5 additions and 2 deletions
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7
xkb/xkb.c
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@ -4298,9 +4298,12 @@ ProcXkbSetNames(ClientPtr client)
static char *
XkbWriteCountedString(char *wire,char *str,Bool swap)
{
CARD16 len,*pLen;
CARD16 len,*pLen;
len= (str?strlen(str):0);
if (!str)
return wire;
len= strlen(str);
pLen= (CARD16 *)wire;
*pLen= len;
if (swap) {