GFlags setting to catch heap corruption (other than Page Heap)?

Question

On one production site our application^(*) crashes repeatedly, but non-reproducibly. Analyzing the crash dumps clearly shows that it\'s a heap corruption: The crashes

Answer 1

"Enable Page Heap" from the gflags GUI enables full page heap verification which can cause the problem you describe. The gflags command line gives you more control and allows you to enable standard page heap verification which uses less memory but is less powerful. The command line also offers you the ability to to use a mix of standard and full using the /size, /dlls, and /address options.

Here are the options listed in the debugger.chm help file:

*To enable and configure page heap verification:

    gflags /p /enable ImageFile  [ /full [/backwards] | /random Probability | /size SizeStart SizeEnd | /address AddressStart AddressEnd | /dlls DLL [DLL...] ]  [/debug ["DebuggerCommand"] | /kdebug] [/unaligned] [/notraces] [/fault Rate [TimeOut]] [/leaks] [/protect] [/no_sync] [/no_lock_checks]*