[PATCH 1/1] gdi32: Explicitly check for negative text length in GetTextExtentExPointW().

[Bernhard Übelacker]

From: Bernhard Übelacker

Signed-off-by: Nikolay Sivov 
---
 dlls/gdi32/text.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/dlls/gdi32/text.c b/dlls/gdi32/text.c
index ff548306dc3..583244fb863 100644
--- a/dlls/gdi32/text.c
+++ b/dlls/gdi32/text.c
@@ -1384,6 +1384,7 @@ BOOL WINAPI GetTextExtentExPointW( HDC hdc, const WCHAR *str, INT count, INT max
     BOOL ret = TRUE;

if (!(dc_attr = get_dc_attr( hdc ))) return FALSE;
+    if (count < 0) return FALSE;

bidi_flags = dc_attr->text_align & TA_RTLREADING ? WINE_GCPW_FORCE_RTL : WINE_GCPW_FORCE_LTR;
     bidi_flags |= WINE_GCPW_DISABLE_REORDERING;