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Safety protection in creation of extended GWIN types.

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This commit is contained in:
inmarket 2015-01-03 18:42:51 +10:00
parent 476d11d599
commit da13b83737
1 changed files with 6 additions and 0 deletions
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6
src/gwin/gwin_gwin.c
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@ -16,6 +16,8 @@
#include "gwin_class.h" #include "gwin_class.h"
#include <string.h>
/*----------------------------------------------- /*-----------------------------------------------
* Data * Data
*-----------------------------------------------*/ *-----------------------------------------------*/
@ -97,6 +99,10 @@ GHandle _gwindowCreate(GDisplay *g, GWindowObject *pgw, const GWindowInit *pInit
pgw->font = defaultFont; pgw->font = defaultFont;
#endif #endif
// Make sure we don't create nasty problems for ourselves
if (vmt->size > sizeof(GWindowObject))
memset(pgw+1, 0, vmt->size - sizeof(GWindowObject));
if (!_gwinWMAdd(pgw, pInit)) { if (!_gwinWMAdd(pgw, pInit)) {
if ((pgw->flags & GWIN_FLG_DYNAMIC)) if ((pgw->flags & GWIN_FLG_DYNAMIC))
gfxFree(pgw); gfxFree(pgw);