# V003. Unrecognized error found...

The V003 warning in the report means that a critical error has occurred within the analyzer. Most likely, no other warnings will be issued to the analyzed file in this case.

## Troubleshooting

Even though the V003 warning is quite rare, we would appreciate it if you could help us fix the issue that triggers the warning. To do this, please send us the files described below via the feedback form.

### The stack trace file

When receiving a warning of the following type:

    V003 Unrecognized error found: stacktrace was written to the file
    source.cpp.PVS-Studio.stacktrace.txt 1

You can go to a text file that looks like this:

    PVS-Studio version: 7.XX.XXXXX.XXXX
    #NN  Object "[0xffffffffffffffff]", at 0xffffffffffffffff, in
    ....
    #1   Object "[0xb39b7e]", at 0xb39b7e, in
    #0   Object "[0xcfac19]", at 0xcfac19, in

Since the PVS-Studio is shipped without debugging information, the file contains only function addresses. However, we can decode this file on our end and determine the source of the error.

Note. The stack trace file does not contain any source code information.

### Intermediate files to run the analysis

The analysis of C and C++ source code is based on the preprocessed ('*.PVS-Studio.i') and configuration ('*.PVS-Studio.cfg') files. The preprocessor expands macros and '#include' directives to create the preprocessed file from the source file (e.g., 'file.cpp'). The configuration file contains the settings required to correctly perform the analysis on the file. A set of these files allows to localize the issue in the C and C++ analyzer core.

Below is a description of how various product components generate these files.

Plugins for IDEs. On the 'Common Analyzer Settings' tab of the PVS-Studio settings, set the 'RemoveIntermediateFiles' option to 'False'. Then, analyze again the files where the crash occurs.

PVS-Studio_Cmd / pvs-studio-dotnet. In the analysis configuration file ('Settings.xml'), set the 'RemoveIntermediateFiles' option to 'False' and analyze again the files where the crash occurs.

CompilerCommandsAnalyzer / pvs-studio-analyzer. Add the '‑‑dump-files' flag to the analysis start line:

    pvs-studio-analyzer analyze .... --dump-files

Then, find the corresponding i-file (for example, 'file.PVS-Studio.i') and 'file.PVS-Studio.cfg' corresponding to it in the project folder.

Note. Preprocessed files contain part of the project source code. We understand that company policy may prohibit the distribution of source code snippets. Thus, we are willing to sign an NDA if necessary. Transferring preprocessed and configuration files can greatly simplify and speed up debugging of the analyzer.