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Important This document may not represent best practices for current development, links to downloads and other resources may no longer be valid. Current recommended version can be found here.

Compiler Warning (level 1) C4952

Error Message

'function' : no profile data found in program database 'pgd_file'

When using /LTCG:PGUPDATE, the compiler detected an input module that was recompiled after /LTCG:PGINSTRUMENT and has a new function (function) present.

This warning is informational. To resolve this warning, run /LTCG:PGINSTRUMENT, redo all test runs, and run /LTCG:PGOPTIMIZE.

This warning would be replaced with an error if /LTCG:PGOPTIMIZE had been used.

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