Symbol Status Abbreviations

Symbol file types and their loading status can be determined by using the lm (List Loaded Modules) command, the !lmi extension, or WinDbg's Debug | Modules menu command.

Each of these displays information about loaded modules and their symbols.

The following abbreviations are used in the displays generated by these commands:

Abbreviation	Meaning
deferred	The module has been loaded, but the debugger has not attempted to load the symbols. Symbols will be loaded when needed. See Deferred Symbol Loading for details.
#	There is a mismatch between the symbol file and the executable, either in their timestamps or in their checksums.
T	The timestamp is missing, not accessible, or equal to zero.
C	The checksum is missing, not accessible, or equal to zero.
DIA	Symbol files were loaded through Debug Interface Access (DIA).
Export	No actual symbol files were found, so symbol information was extracted from the binary file's export table.
M	There is a mismatch between the symbol file and the executable, either in their timestamps or in their checksums. However, symbol files have been loaded anyway due to the symbol option settings.
PERF	This binary contains performance-optimized code. Standard address arithmetic may not produce correct results.
Stripped	Debug information was stripped from the image file.
PDB	The symbols are in .pdb format.
COFF	The symbols are in common object file format (COFF) symbol format.