zbar crashes when seeing multiple qr codes in image

[TARS-bot]

Crash Report

This crash report was reported through the automatic crash reporting system 🤖

Traceback

Traceback (most recent call last):
  File "electrum\gui\qt\qrreader\qtmultimedia\camera_dialog.py", line 406, in _on_frame_available
  File "electrum\qrreader\zbar.py", line 155, in read_qr_code
OSError: exception: access violation reading 0xFFFFFFFF

OSError: exception: access violation reading 0xFFFFFFFF

Reporter

This issue was reported by 6 user(s):

Electrum Version	Python Version	Operating System	Wallet Type	Locale	Stack
4.3.1	3.9.11 (tags/v3.9.11:2de452f, Mar 16 2022, 14:21:37) [MSC v.1929 32 bit (Intel)]	Windows-10-10.0.19044-SP0	imported	ru_RU	ℹ
4.3.4	3.9.13 (tags/v3.9.13:6de2ca5, May 17 2022, 16:24:45) [MSC v.1929 32 bit (Intel)]	Windows-8.1-6.3.9600-SP0	imported,standard	ru_RU	ℹ
4.3.4	3.9.13 (tags/v3.9.13:6de2ca5, May 17 2022, 16:24:45) [MSC v.1929 32 bit (Intel)]	Windows-10-10.0.19045-SP0	imported	ru_RU	ℹ
4.4.0	3.9.13 (tags/v3.9.13:6de2ca5, May 17 2022, 16:24:45) [MSC v.1929 32 bit (Intel)]	Windows-10-10.0.19044-SP0	imported	ru_UA	ℹ
4.4.6	3.9.13 (tags/v3.9.13:6de2ca5, May 17 2022, 16:24:45) [MSC v.1929 32 bit (Intel)]	Windows-8.1-6.3.9600-SP0	standard	ja_JP	ℹ
4.5.2	3.10.11 (tags/v3.10.11:7d4cc5a, Apr 5 2023, 00:20:04) [MSC v.1929 32 bit (Intel)]	Windows-10-10.0.19045-SP0	standard	ru_RU	ℹ

Additional Information

QRを読み取るとｴﾗｰ

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[SomberNight]

I can reproduce this on Windows: try scanning qr codes from the screen (input_qr_from_screenshot) when there are multiple qr codes visible on the same screen.

[SomberNight]

try scanning qr codes from the screen (input_qr_from_screenshot) when there are multiple qr codes visible on the same screen.

This also affects macOS. There the program segfaults.

This must be a bug in zbar.