Azure Pipelines MSVC runs out of memory

[bstaletic]

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Hello,

I've tried to use CTRE in my project, but MSVC was running out of memory.

• My project/branch: https://github.com/bstaletic/ycmd/tree/cxx17
• Azure log: https://dev.azure.com/borisstaletic/3ce92110-caa5-4c49-b8c3-44a433da676b/_apis/build/builds/634/logs/78

Both the debug and the release builds run out of memory. The log above is from a release run. The error itself:

2020-01-22T19:07:32.5996852Z D:\a\1\s\cpp\ctre\ctre\ctre.hpp(3122): fatal error C1002: compiler is out of heap space in pass 2 [C:\Users\VssAdministrator\AppData\Local\Temp\ycm_build_8uffflqo\ycm\ycm_core.vcxproj]
2020-01-22T19:07:33.5333893Z cl : command line error D8040: error creating or communicating with child process [C:\Users\VssAdministrator\AppData\Local\Temp\ycm_build_8uffflqo\ycm\ycm_core.vcxproj]

Steps to run the benchmark:

• Clone the project
• Dependencies: CMake and Python3 in %PATH% and the MSVC compiler
• Execute python3 benchmark.py --msvc <ver>
  • <ver> would be one of { 15, 16 }, depending on which MSVC is available. Both versions run out of memory.

Additional info:

CTRE is used in exactly one TU. The pattern is used in this loop