https://git.reactos.org/?p=reactos.git;a=commitdiff;h=456e2192b7c9be77359ed5ad2b56f2f80a11ad0d
commit 456e2192b7c9be77359ed5ad2b56f2f80a11ad0d Author: Timo Kreuzer <timo.kreu...@reactos.org> AuthorDate: Wed Dec 27 10:48:55 2017 +0100 [WIN32K] Check for empty output rect in GreGradientFill Fixes a failed ASSERT. CORE-14148 #resolve --- win32ss/gdi/ntgdi/fillshap.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/win32ss/gdi/ntgdi/fillshap.c b/win32ss/gdi/ntgdi/fillshap.c index f3663a6eda..a42a341423 100644 --- a/win32ss/gdi/ntgdi/fillshap.c +++ b/win32ss/gdi/ntgdi/fillshap.c @@ -945,6 +945,12 @@ GreGradientFill( rclExtent.top += pdc->ptlDCOrig.y; rclExtent.bottom += pdc->ptlDCOrig.y; + if (RECTL_bIsEmptyRect(&rclExtent)) + { + DC_UnlockDc(pdc); + return TRUE; + } + ptlDitherOrg.x = ptlDitherOrg.y = 0; IntLPtoDP(pdc, (LPPOINT)&ptlDitherOrg, 1);