UpdateDebugInfoFile Function

Debug Help Library

UpdateDebugInfoFile Function

Uses the specified information to update the corresponding fields in the symbol file.

This function has been superseded by the UpdateDebugInfoFileEx function. Use UpdateDebugInfoFileEx to verify the checksum value.

BOOL UpdateDebugInfoFile(
  __in          PSTR ImageFileName,
  __in          PSTR SymbolPath,
  __out         PSTR DebugFilePath,
  __in          PIMAGE_NT_HEADERS NtHeaders



The name of the image that is now out of date with respect to its symbol file.


The path in which to look for the symbol file.


A pointer to a buffer that receives the name of the symbol file that was updated.


A pointer to an IMAGE_NT_HEADERS structure that specifies the new header information.

Return Value

If the function succeeds, the return value is TRUE.

If the function fails, the return value is FALSE. To retrieve extended error information, call GetLastError.


The UpdateDebugInfoFile function takes the information stored in the IMAGE_NT_HEADERS structure and updates the corresponding fields in the symbol file. Any time an image file is modified, this function should be called to keep the numbers in sync. Specifically, whenever an image checksum changes, the symbol file should be updated to match.

All ImageHlp functions, such as this one, are single threaded. Therefore, calls from more than one thread to this function will likely result in unexpected behavior or memory corruption. To avoid this, you must synchronize all concurrent calls from more than one thread to this function.



Requires Windows Vista, Windows XP, Windows 2000 Professional, Windows NT Workstation 4.0, Windows Me, Windows 98, or Windows 95.


Requires Windows Server 2008, Windows Server 2003, Windows 2000 Server, or Windows NT Server 4.0.


Declared in Imagehlp.h.


Use Imagehlp.lib.


Requires Imagehlp.dll.

See Also

ImageHlp FunctionsIMAGE_NT_HEADERS

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Build date: 9/25/2007

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