segmentation fault with Python interface (Bug #3895)

Added by Pieter Eendebak over 10 years ago. Updated almost 10 years ago.

Status:Done Start date:2014-09-05
Priority:Normal Due date:
Assignee:Maksim Shabunin % Done:

0%
Category:highgui-gui
Target version:3.0
Affected version:branch 'master' (3.0-dev) Operating System:Linux
Difficulty: HW Platform:x64
Pull request:https://github.com/Itseez/opencv/pull/3994

Description

The segmentation fault happens when calling imshow. The error related to the gtk package.
A minimal example:

  1. Minimal example

import time
import numpy as np

import cv2
import gtk # no crash without gtk

print('%s' % cv2.__version__)

im=(np.random.rand( 400, 600)*100).astype(np.uint8)
#cv2.namedWindow('Image')

print('at cv2.imshow...')
cv2.imshow('Image', im) # segmentation fault
print('done ...' ); time.sleep(20);

Related issues

related to Bug #927: namedWindow seems to modify locale settings Done

History

#1
Updated by Dmitry Retinskiy over 10 years ago

  • Category set to highgui-gui

#2
Updated by Maksim Shabunin almost 10 years ago

  • Target version changed from 3.0-alpha to 3.0

#3
Updated by Maksim Shabunin almost 10 years ago

Calling gtk_disable_setlocale causes this crash. Without this call it works fine.

  • Status changed from New to Open
  • Assignee set to Maksim Shabunin

#4
Updated by Maksim Shabunin almost 10 years ago

  • Pull request set to https://github.com/Itseez/opencv/pull/3994

#5
Updated by Maksim Shabunin almost 10 years ago

Fixed in https://github.com/Itseez/opencv/pull/3994 by removing gtk_disable_setlocale and placing 

setlocale(LC_NUMERIC,"C");
after gtk initialization.

  • Status changed from Open to Done

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