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ID | Category | Severity | Reproducibility | Date Submitted | Last Update | ||||||||
0007691 | [Squeak] VM | major | always | 04-27-12 12:24 | 04-28-12 00:32 | ||||||||
Reporter | lewis | View Status | public | ||||||||||
Assigned To | lewis | ||||||||||||
Priority | normal | Resolution | fixed | ||||||||||
Status | resolved | Product Version | |||||||||||
Summary | 0007691: JPEGReadWriter2Plugin off-by-one bug crashes VM | ||||||||||||
Description |
Fix for an off-by-one bug is provided on vm-dev: http://lists.squeakfoundation.org/pipermail/vm-dev/2012-April/010470.html [^] Diagnosed and fixed by Páhi András pahia at t-online.hu Confirmed by Juan Vuletich |
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Additional Information | Fix is for the generated plugin (VMMaker), provided as C code. Need to incorporate back into the SLANG. | ||||||||||||
Attached Files |
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(0014223 - 574 - 670 - 764 - 764 - 764 - 764) lewis 04-27-12 12:28 |
From: P?hi Andr?s <pahia@t-online.hu> To: <vm-dev@lists.squeakfoundation.org> Date: Fri, 27 Apr 2012 10:02:43 +0200 Subject: [Vm-dev] JPEGReadWriter2Plugin crash fixed Hi, I have found the origin of various crashes in the Squeak VM, which is related to the JPEGReadWriter2Plugin. The hunt begun with Juan's Cuis 4.0 release, see the emails exchanged below and the description. I have attached the fixed C source, but the fix should go in the VM sources, because the code is generated as I see. Please include the fix in the VM sources. Regards, Andras Pahi |
(0014224 - 776 - 854 - 854 - 854 - 854 - 854) lewis 04-28-12 00:30 |
This bug was fixed by John McIntosh and incorporated into VMMaker in Oct 2010, but is not yet merged into the Cog branch. Need to update the oscog branch with changes from trunk VMM. A number of changes for JPEG plugin were merged from oscog in VMMaker-dtl.191, then John's changes were added in VMMaker-dtl.192. John's changes need to be added back to oscog. The VMMaker commit was here: Name: VMMaker-dtl.192 Author: dtl Time: 9 October 2010, 2:26:51 am UUID: e22782de-efc8-4029-b1ec-61588fb91d37 Ancestors: VMMaker-dtl.191 VMMaker 4.3.6 Merge John's 64-bit changes for JPEGReaderWriter2Plugin. Add unit tests based on Bert's test in original bug report. With these patches JPEGReaderWriter2Plugin works with the VM compiled in either 32-bit or 64-bit mode. |
(0014225 - 130 - 130 - 130 - 130 - 130 - 130) lewis 04-28-12 00:32 |
Bug was resolved by John McIntosh, added to VMMaker in 2010. John's update needs to be incorporated into oscog branch for Cog VMs. |
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