SAP Basis Tech Supports

Symptom

In the call stack, an exception in the SAP GUI for Windows leads to a termination in a “malloc” command. This is probably a memory overwrite.
Other terms

SAP GUI, exception, AppVerifier, PDB
Reason and Prerequisites

In the case of a SAP GUI exception, SAP Support asks you to reproduce the termination using the Microsoft Application Verifier tool (freeware). You can use this tool to determine the software that overwrites the memory.
Solution

As a prerequisite, follow the instructions of Note 520688. In addition, activate the complete exception tracing as described in Note 559285.
Then install the Microsoft Application Verifier tool (ApplicationVerifier.x86.msi):
http://www.microsoft.com/downloads/details.aspx?FamilyID=bd02c19c-1250-433c-8c1b-2619bd93b3a2&DisplayLang=en#filelist
Exit SAP Logon (and all open SAP GUI screens) and start the installed Application Verifier. Choose FILE -> ADD APPLICATION to select the saplogon.exe and sapgui.exe files (Image Name), and select HEAPS (under the BASICS tree) as the only test. Then choose SAVE. (Confirm the “Debugger Required” dialog box with OK. In this special case you DO NOT require a debugger.)
Start SAP Logon as normal and reproduce the exception. Attach the generate exception file (see Note 520688) to the message to be sent to SA Support.
Finally, deactivate the HEAP test in the Application Verifier and choose SAVE (this step should remove the saplogon.exe file from the “Image Name” window).