OSError: invalid face handle

[eroux]

What did you do?

I ran the following code:

from PIL import Image, ImageDraw, ImageFont, features

print(features.check('raqm'))
print(Image.PILLOW_VERSION)

img = Image.new('RGB', (800, 300), color = (73, 109, 137))
d = ImageDraw.Draw(img)
fnt = ImageFont.truetype('NotoSansTibetan-Regular.ttf', 24, layout_engine=ImageFont.LAYOUT_BASIC)
d.text((10, 10), "༄༅། །སྒྲུབ།", font=fnt, fill=(255, 255, 0))
img.save('result.png')
fnt = ImageFont.truetype('NotoSansTibetan-Regular.ttf', 24, layout_engine=ImageFont.LAYOUT_RAQM)
print("things work until...")
res = fnt.getmask("༄༅། །སྒྲུབ།", features=['ccmp', 'abvs', 'blws', 'calt', 'liga', 'kern', 'abvm', 'blwm', 'mkmk'])

What did you expect to happen?

No segfault

What actually happened?

Here's the console output:

True
5.0.0
things work until...
Traceback (most recent call last):
  File "testmarche.py", line 13, in <module>
    res = fnt.getmask("༄༅། །སྒྲུབ།", features=['ccmp', 'abvs', 'blws', 'calt', 'liga', 'kern', 'abvm', 'blwm', 'mkmk'])
  File "/usr/local/lib/python3.5/dist-packages/PIL/ImageFont.py", line 163, in getmask
    return self.getmask2(text, mode, direction=direction, features=features)[0]
  File "/usr/local/lib/python3.5/dist-packages/PIL/ImageFont.py", line 166, in getmask2
    size, offset = self.font.getsize(text, direction, features)
OSError: invalid face handle
Erreur de segmentation

What versions of Pillow and Python are you using?

• Pillow 5.0.0
• Python 3.5.3
• libraqm is manually installed, branch master, commit cf6ec2c4a31785c1092e38569225d1d6a294111b

[wiredfool]

What platform are you on?

[eroux]

Linux, up-to-date Debian stable

[wiredfool]

It's happening OMM, OSX 10.12.6, from binary osx wheels of 5.1.0

============================================= FAILURES ==============================================
_________________________ TestImageFont_RaqmLayout.test_font_with_filelike __________________________

self = <test_imagefont.TestImageFont_RaqmLayout testMethod=test_font_with_filelike>

    def test_font_with_filelike(self):
        ImageFont.truetype(self._font_as_bytes(), FONT_SIZE,
                           layout_engine=self.LAYOUT_ENGINE)
>       self._render(self._font_as_bytes())

Tests/test_imagefont.py:109: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Tests/test_imagefont.py:123: in _render
    ttf.getsize(txt)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = <PIL.ImageFont.FreeTypeFont object at 0x10fd88090>, text = 'Hello World!', direction = None
features = None

    def getsize(self, text, direction=None, features=None):
>       size, offset = self.font.getsize(text, direction, features)
E       IOError: invalid face handle

../vpy27-test/lib/python2.7/site-packages/PIL/ImageFont.py:157: IOError
1 failed, 874 passed, 41 skipped in 50.48 seconds

[eroux]

@khaledhosny any hint on where it could come from? Is there a "safer" commit/release of raqm that should be used?

[khaledhosny]

I don’t see where Raqm is involved here, invalid face handle is an error from FreeType, probably somewhere is passing an invalid FT_Face to Raqm.

[eroux]

I see... thanks for taking a look!

[hugovk]

Closing as FreeType error. Can re-open if there's something to do inside Pillow.

[eroux]

What was the test procedure that made you think this is not a bug in pillow? Pillow could very well create a freetype handler and corrupt it, please elaborate on why you closed the issue

[hugovk]

From #3066 (comment), but reopening!

[navenduagarwal]

did anyone find a solution, for me this error started happening as soon in installed depends/install_raqm.sh

[johngsk]

Also having this issue. It's also inconsistent. Sometimes my script completes with no error and sometimes throws this OSError (seemingly a random string in the array of strings I am drawing each time) then crashes.