UpdateDebugInfoFile function (imagehlp.h)

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

Note  This function works with .dbg files, not .pdb files.
This function has been superseded by the UpdateDebugInfoFileEx function. Use UpdateDebugInfoFileEx to verify the checksum value.


BOOL IMAGEAPI UpdateDebugInfoFile(
  [in]  PCSTR               ImageFileName,
  [in]  PCSTR               SymbolPath,
  [out] PSTR                DebugFilePath,
  [in]  PIMAGE_NT_HEADERS32 NtHeaders


[in] ImageFileName

The name of the image that is now out of date with respect to its symbol file.

[in] SymbolPath

The path in which to look for the symbol file.

[out] DebugFilePath

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

[in] NtHeaders

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.


Minimum supported client Windows XP [desktop apps only]
Minimum supported server Windows Server 2003 [desktop apps only]
Target Platform Windows
Header imagehlp.h
Library Imagehlp.lib
DLL Imagehlp.dll

See also


ImageHlp Functions