DynamoRIO / DynamoRIO/dynamorio
Support pdbpagesize linker flag from msvc when checking for code coverage
- Dominant language
- C
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- 2d 15h
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- 31
Description
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**Is your feature request related to a problem? Please describe.**
Large projects often need to support a larger than 4GB pdb when building with msvc. This is especially true if incremental linking is turned on as the pdb slowly grows over time. MSVC created a very undocumented linker flag pdbpagesize that allows for a pdb as large as 32GB.
This however breaks some tools here for code coverage basically getting the "Failed to enumerate lines for: " at the drcov2lcov step for the project you are running whenever that pdbpagesize option is used for linking.
**Describe the solution you'd like**
Either the tool could detect the pdb page size somehow or a command line argument would be needed.
**Describe alternatives you've considered**
You may be able to workaround this by having a code coverage configuration and a normal configuration for building but its cumbersome and doesn't work for all projects if their pdb size is over 4GB already without incremental linking at all contributing to it.
**Additional context**
I was able to reproduce this fairly easily with just a Basic "Hello World" C++ implementation with VS2026 when adding the /pdbpagesize:16384 linker option.
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