pdb Debug File (*.pdb)
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PDBs are files with multiple ‘streams’ of information in them.
PDBs source files usually have the .pdb file extension. For example: file.pdb.
The linker creates a PDB file by combining the debug and symbol information from all of the project object files during compilation. It stores a list of symbols in a module with their addresses, file names, and the line on which the symbol was declared.
When a program is debugged, the debugger loads debugging information from the PDB file and uses it to locate symbols or relate the current execution state of a program source code.
A PDB file is only generated when using the Modern C++ compiler generating COFF object files.
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