| Summary: | valgrind is changing behaviour of program | ||||||
|---|---|---|---|---|---|---|---|
| Product: | Red Hat Enterprise Linux 6 | Reporter: | Miroslav Franc <mfranc> | ||||
| Component: | valgrind | Assignee: | Jakub Jelinek <jakub> | ||||
| Status: | CLOSED WONTFIX | QA Contact: | qe-baseos-tools-bugs | ||||
| Severity: | high | Docs Contact: | |||||
| Priority: | unspecified | ||||||
| Version: | 6.1 | CC: | law, nobody+dseketel, ohudlick | ||||
| Target Milestone: | rc | ||||||
| Target Release: | --- | ||||||
| Hardware: | i386 | ||||||
| OS: | Linux | ||||||
| Whiteboard: | |||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||
| Doc Text: | Story Points: | --- | |||||
| Clone Of: | Environment: | ||||||
| Last Closed: | 2012-05-29 17:21:26 UTC | Type: | --- | ||||
| Regression: | --- | Mount Type: | --- | ||||
| Documentation: | --- | CRM: | |||||
| Verified Versions: | Category: | --- | |||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||
| Attachments: |
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Might very well be e.g. https://bugs.kde.org/show_bug.cgi?id=197915 which isn't likely to be fixed any time soon. Given the trend towards using the SSE units rather than the x87 FPU, properly modeling the x87 FPU just isn't going to be terribly important. Given the amount of work necessary and the declining importance, I don't see how we can justify the engineering effort to address this isue. Closing as WONTFIX. |
Created attachment 493164 [details] sample picture Description of problem: On i386 valgrind doesn't behave like it should. When tried with ImageMagick's convert the program gives different outputs when run with valgrind and without. The output of the program should be the same. Version-Release number of selected component (if applicable): valgrind-3.6.0-3.el6.i686 How reproducible: always Steps to Reproduce: 1. convert -radial-blur 5 munich.jpg 0munich.jpg 2. valgrind convert -radial-blur 5 munich.jpg 1munich.jpg 3. md5sum [01]munich.gif Actual results: md5sums are different Expected results: md5sums are the same Additional info: 1/ The sample picture used is in attachment. 2/ So far seems to be limited to i386 arch. 3/ This is most likely issue on rawhide and previous version as well. 4/ Other reproducers: convert -equalize munich.jpg 0munich.gif convert -posterize 10 munich.jpg 0munich.jpg convert -posterize 10 munich.jpg 0munich.png convert -posterize 10 munich.jpg 0munich.gif convert -flop munich.jpg 0munich.gif convert -flip munich.jpg 0munich.gif convert -resize 50\% munich.jpg 0munich.gif convert -radial-blur 5 munich.jpg 0munich.gif convert -resize 160x100 munich.jpg 0munich.gif 5/ In some cases you can use ImageMagick's compare instead of md5sum, to verify the images are different visually.