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Re: heap error with driver dll
Posted by: Bogdan Degtyariov
Date: November 12, 2017 09:22PM

Hi Jason,

I see, the test case could not be made for this. At least not easily...
Perhaps we can go another way and analyze the memory dumps.
In the first message you posted the stack trace containing these functions inside myodbc5w.dll:

0e 09c4d6dc 6e1a4d46 myodbc5w!SQLNumResultCols+0x2225f
0f 09c4d724 6e197bd3 myodbc5w!SQLNumResultCols+0x235cb
10 09c4d734 6e19757c myodbc5w!SQLNumResultCols+0x16458
11 09c4d75c 6e73e8fb myodbc5w!SQLNumResultCols+0x15e01

Does every crash involve SQLNumResultCols() function? This would narrow our search and help making an efficient patch to fix the issue.
Thanks.

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Re: heap error with driver dll
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