{{header}}
{{object 1 0}} <<
  /Type /Catalog
  /Pages 2 0 R
>>
endobj
{{object 2 0}} <<
  /Type /Pages
  /Count 1
  /Kids [3 0 R]
>>
endobj

% A page with scaled copies of a masked image. Any scaled image with an area
% less than 8 times the stencil mask's original area (64x64 * 8 = 32,768) forces
% bilinear interpolation of the stencil mask, which triggers the bug.
{{object 3 0}} <<
  /Type /Page
  /Parent 2 0 R
  /Contents 4 0 R
  /MediaBox [0 0 432 288]
  /Resources <<
    /XObject <<
      /Masked 5 0 R
    >>
  >>
>>
endobj
{{object 4 0}} <<
  {{streamlen}}
>>
stream

% 32x32 image has an area of 1,024, so it is interpolated.
q
  32 0 0 32 64 240 cm
  /Masked Do
Q

% 64x64 image has an area of 4,096, so it is interpolated.
q
  64 0 0 64 48 160 cm
  /Masked Do
Q

% 128x128 image has an area of 16,384, so it is interpolated.
q
  128 0 0 128 16 16 cm
  /Masked Do
Q

% 256x256 image has an area of 65,536, so it is not interpolated.
q
  256 0 0 256 160 16 cm
  /Masked Do
Q

endstream
endobj

% A 3x3 base image with a stencil mask.
{{object 5 0}} <<
  /Subtype /Image
  /BitsPerComponent 8
  /ColorSpace /DeviceRGB
  /Filter /ASCIIHexDecode
  /Height 3
  /Mask 6 0 R
  /Width 3
  {{streamlen}}
>>
stream
B8C3E9 7793DB C3CEEF
8CADF2 1B74E8 BFD5FB
C2D3FA 9FBDF8 D9E5FC
endstream
endobj

% A 64x64 stencil mask with horizontal and vertical lines.
{{object 6 0}} <<
  /Subtype /Image
  /BitsPerComponent 1
  /Filter [/ASCIIHexDecode /FlateDecode]
  /Height 64
  /ImageMask true
  /Width 64
  {{streamlen}}
>>
stream
78DA63608080FAFF10E000E5C3687FA8388CF6818A63D0500330E802A83C41BA1EAA9E105D03554F
36CD0C35876CFA0FD41CDAD3F2FF694D03002512CA0A
endstream
endobj

{{xref}}
{{trailer}}
{{startxref}}
%%EOF