microsoft / microsoft/profile-explorer

Loading PDBs broken in version 1.2.0.

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Dominant language
C#
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286
Forks
27
Avg merge
3d 1h
Merged PRs (30d)
1

Description

Loading pdb works in profile_explorer_installer_1.1.5_x64

Release 1.2.0 and every later version breaks it (i tested all newer releases to find out in which breaks).

If it helps, i am profiling an app built using FPC compiler ( https://gitlab.com/freepascal.org/fpc/ ) that originally has dwarf symbols, but then it is converted to PDB using https://github.com/rainers/cv2pdb, the pdf file is in same directory as the application exe (it is 64 bit x86_64 binary).

This all worked fine until version 1.2.0.

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First steps

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  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Reproduce the regression by comparing PDB loading in profile_explorer_installer_1.1.5_x64 with version 1.2.0 and later, using the 64-bit FPC application and cv2pdb-generated PDB described in the issue. Start by identifying the PDB-loading entry point and the behavior change; done means the converted PDB loads for the supplied application as it did in 1.1.5.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp
Domain
devtools
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
38/100

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