Clean up LMDB values accesses

Merged Laurent Petre requested to merge bugfix/lmdb-values-usage into develop


From the commit message:

The values, including the character strings, returned by LMDB are not zero-terminated. Therefore, one must specify the number of characters to use when constructing the std::string object. Otherwise, the code may or may not work depending on the memory content.

Related Issue

Fixes #105 (closed) without any pretension to be the final answer.

How Has This Been Tested?

Compiles, still able to launch a run.

Types of changes

  • Bug fix (non-breaking change which fixes an issue)
  • New feature (non-breaking change which adds functionality)
  • Breaking change (fix or feature that would cause existing functionality to change)


  • My code follows the code style of this project.
  • My change requires a change to the documentation.
  • I have updated the documentation accordingly.
  • I have read the CONTRIBUTING document.
  • I have added tests to cover my changes.
  • All new and existing tests passed.
Edited by Laurent Petre

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