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win32u: Handle memory allocation failures in nulldrv_PolyBezierTo (cppcheck). 

Signed-off-by: Alex Henrie <alexhenrie24@gmail.com>
Signed-off-by: Huw Davies <huw@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Alex Henrie 2021-12-22 13:35:36 +00:00 committed by Alexandre Julliard
parent 15a01af70b
commit b498f38e1c
1 changed files with 10 additions and 2 deletions
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12
dlls/win32u/painting.c
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@ -156,7 +156,7 @@ BOOL CDECL nulldrv_PolyBezierTo( PHYSDEV dev, const POINT *points, DWORD count )
BOOL CDECL nulldrv_PolyDraw( PHYSDEV dev, const POINT *points, const BYTE *types, DWORD count )
{
DC *dc = get_nulldrv_dc( dev );
POINT *line_pts = NULL, *bzr_pts = NULL, bzr[4];
POINT *line_pts = NULL, *new_line_pts, *bzr_pts = NULL, bzr[4];
DWORD i;
INT num_pts, num_bzr_pts, space, size;
@ -182,6 +182,7 @@ BOOL CDECL nulldrv_PolyDraw( PHYSDEV dev, const POINT *points, const BYTE *types
space = count + 300;
line_pts = malloc( space * sizeof(POINT) );
if (!line_pts) return FALSE;
num_pts = 1;
line_pts[0] = dc->attr->cur_pos;
@ -209,7 +210,14 @@ BOOL CDECL nulldrv_PolyDraw( PHYSDEV dev, const POINT *points, const BYTE *types
if (space < size)
{
space = size * 2;
line_pts = realloc( line_pts, space * sizeof(POINT) );
new_line_pts = realloc( line_pts, space * sizeof(POINT) );
if (!new_line_pts)
{
free( bzr_pts );
free( line_pts );
return FALSE;
}
line_pts = new_line_pts;
}
memcpy( &line_pts[num_pts], &bzr_pts[1], (num_bzr_pts - 1) * sizeof(POINT) );
num_pts += num_bzr_pts - 1;