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Asked: 2026-05-16T15:30:18+00:00

I am using UMDH tool to analyze the memory leaks of my application. The

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I am using UMDH tool to analyze the memory leaks of my application.

The top leaks observed by UMDH logs are as follows:

  • 237856226 ( 241016812 – 3160586) 3704833 allocs BackTraceE9

  • 3685198 ( 3704833 – 19635) BackTraceE9 allocations
    ntdll!RtlIpv4StringToAddressExW+00011866
    ntdll!RtlSubAuthorityCountSid+00000019
    MSVCR80!malloc+0000007A

  • 207093760 ( 207355904 – 262144) 791 allocs BackTrace6EB

  • 790 ( 791 – 1) BackTrace6EB allocations
    ntdll!RtlIpv4StringToAddressExW+00011866
    ntdll!RtlSubAuthorityCountSid+00000019
    php5ts!zend_register_internal_class_ex+000001A5

I have built my application in debug mode and specified the PDB files in the _NT_SYMBOL_PATH.
But I am still unable to see the stack trace from my application. For example in the above log “MSVCR80!malloc+0000007A” malloc is being called , but no idea from which part of my application.

What extra configuration is required so that debug symbols will be visible in the UMDH logs?

Thanks,

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1 Answer

  1. Editorial Team

    This is a terrible oversight on Microsoft’s part. Here are the details. You are basically out of luck with this version of Microsoft’s CRT library.

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