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WINGs: WMIsPL* functions return False if proplist is null.

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Previously, calls to WMIsPLString, WMIsPLData, WMIsPLArray, and
WMIsPLDictionary would result in a segfault if the argument was null.
This could happen, e.g., if we are checking which type of proplist
was just parsed from a file, but the parsing failed.

These functions now return False in this case.
This commit is contained in:
Doug Torrance
2017-08-18 20:37:45 -04:00
committed by Carlos R. Mafra
parent 101ef6f28e
commit 6f195b18fc
1 changed files with 16 additions and 4 deletions
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20
WINGs/proplist.c
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@@ -1253,22 +1253,34 @@ int WMGetPropListItemCount(WMPropList * plist)
Bool WMIsPLString(WMPropList * plist) Bool WMIsPLString(WMPropList * plist)
{ {
return (plist->type == WPLString); if (plist)
return (plist->type == WPLString);
else
return False;
} }
Bool WMIsPLData(WMPropList * plist) Bool WMIsPLData(WMPropList * plist)
{ {
return (plist->type == WPLData); if (plist)
return (plist->type == WPLData);
else
return False;
} }
Bool WMIsPLArray(WMPropList * plist) Bool WMIsPLArray(WMPropList * plist)
{ {
return (plist->type == WPLArray); if (plist)
return (plist->type == WPLArray);
else
return False;
} }
Bool WMIsPLDictionary(WMPropList * plist) Bool WMIsPLDictionary(WMPropList * plist)
{ {
return (plist->type == WPLDictionary); if (plist)
return (plist->type == WPLDictionary);
else
return False;
} }
Bool WMIsPropListEqualTo(WMPropList * plist, WMPropList * other) Bool WMIsPropListEqualTo(WMPropList * plist, WMPropList * other)