Major bug in the new dbghelp.dll

The latest dbghelp.dll (version, which can be downloaded via the newest WDK, seems to have a major bug regarding the function SymGetModuleInfo64 (which is used in almost every project, if you want to display module-infos).

A user reported this bug in the WinDbg newsgroup.

I now build a small repro-code, which shows the problem. You can download the code here:

The problem is, that the size of the struct “IMAGEHLP_MODULE64” has changed. They added two DWORDs at the end (the struct has now a size of 0x690 bytes). This is normally not a problem because the struct has a “SizeOfStruct” member, which must be set, prior to calling the “SymGetModuleInfo64” function.

But the new version does not support the older version of the struct with a size of 0x688 bytes, which is commonly used because this was the last version since 2003!!! It only supports the older versions from 2002 and before.

So I hope that this major bug will soon get fixed… but after the WinDbg-Release seems to be coupled to the WDK-release, we can wait until next year…

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