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old-run-webkit-tests has code to configure the post-mortem debugger (which we use for saving crash logs). It currently sets the post-mortem debugger for 64-bit apps. But all of our test apps are 32-bit, so we should set the 32-bit post-mortem debugger instead.
A little more detail:
The post-mortem debugger is controlled by some registry values in HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\AeDebug. On 64-bit OSes, you can either set the values in that key, which will be used for 64-bit apps, or in the equivalent key under Wow6432Node, which will be used for 32-bit apps.
Created an attachment (id=83825) [details]
Set the 32-bit post-mortem debugger on 64-bit OSes
Committed r79697: <http://trac.webkit.org/changeset/79697>