Bug 382978 - valgrind: LOAD_PDB_DEBUGINFO: \032 header character not found. possible invalid/unsupported pdb file format
Summary: valgrind: LOAD_PDB_DEBUGINFO: \032 header character not found. possible inva...
Status: REPORTED
Alias: None
Product: valgrind
Classification: Developer tools
Component: general (show other bugs)
Version: 3.14 SVN
Platform: Compiled Sources Linux
: NOR normal
Target Milestone: ---
Assignee: Julian Seward
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2017-08-01 04:25 UTC by Austin English
Modified: 2017-08-01 04:28 UTC (History)
0 users

See Also:
Latest Commit:
Version Fixed In:

Attachments
mscorlib.pdb (426.41 KB, application/x-xz)
2017-08-01 04:25 UTC, Austin English 		Details
makecert.pdb (1.57 KB, application/x-xz)
2017-08-01 04:27 UTC, Austin English 		Details
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Description Austin English 2017-08-01 04:25:42 UTC 
Created attachment 106998 [details]
mscorlib.pdb

Microsoft's C# compiler (Rosylyn, also used by Mono, https://github.com/dotnet/roslyn/) generates PDBs that are of a different format than those generated by Visual Studio for C/C++.

This revealed itself because wine-mono accidentally shipped .pdb files, and running wine's dlls/mscoree/tests/mscoree.c tests crashed valgrind (bug 382515).

Now, it ignores those pdb files instead. It would be nice if these files were supported, but at least for Wine, it's probably not worth the effort, as only a tiny part of the code uses it. But if valgrind becomes popular for C#, it may be more important.

==1193== Warning: Missing or un-stat-able /home/austin/.wine/drive_c/windows/mono/mono-2.0/bin/libmono-2.0-x86.pdb
==1193== LOAD_PDB_DEBUGINFO: \032 header character not found.  possible invalid/unsupported pdb file format?
==1193== LOAD_PDB_DEBUGINFO: find_pdb_header found no hdr.  possible invalid/unsupported pdb file format?
==1193== LOAD_PDB_DEBUGINFO: failed loading info from /home/austin/.wine/drive_c/windows/mono/mono-2.0/lib/mono/4.5/mscorlib.pdb
Comment 1 Austin English 2017-08-01 04:27:10 UTC 
Created attachment 106999 [details]
makecert.pdb

I'm also attaching a small pdb file that may be easier to analyze.
Comment 2 Austin English 2017-08-01 04:28:57 UTC 
Forgot to mention in first comment; the PDB format is now publicly documented, at https://github.com/Microsoft/microsoft-pdb