Move operator<< and to_string for daliDataType_t to the global namespace.

[mzient]

Category:

Bug fix (non-breaking change which fixes an issue)

Description:

The compiler checks for to_string and (especially) operator<< using ADL. Since dali::DALIDataType is now just a typedef to ::daliDataType_t, this results in automatically generated operator<< being used instead of the proper one.

GCC before version 12 picked the intended custom operator<<, masking the bug.

Additional information:

Affected modules and functionalities:

Key points relevant for the review:

Tests:

ListTypeNames test, when compiled with clang or gcc>=12

• Existing tests apply
• New tests added
  • Python tests
  • GTests
  • Benchmark
  • Other
• N/A

Checklist

Documentation

• Existing documentation applies
• Documentation updated
  • Docstring
  • Doxygen
  • RST
  • Jupyter
  • Other
• N/A

DALI team only

Requirements

• Implements new requirements
• Affects existing requirements
• N/A

REQ IDs: N/A

JIRA TASK: N/A

[dali-automaton]

CI MESSAGE: [21424874]: BUILD STARTED

[dali-automaton]

CI MESSAGE: [21424874]: BUILD PASSED