Bug 53474 - VS 2017 Error: ConvertPdbToMdb task failed unexpectedly. PortablePdbNotSupportedException
Summary: VS 2017 Error: ConvertPdbToMdb task failed unexpectedly. PortablePdbNotSuppor...
Status: RESOLVED FIXED
Alias: None
Product: Visual Studio Extensions
Classification: Xamarin
Component: iOS ()
Version: unspecified
Hardware: PC Windows
: --- normal
Target Milestone: 15.2
Assignee: Bugzilla
URL:
: 53476 ()
Depends on:
Blocks:
 
Reported: 2017-03-17 17:54 UTC by Daniel Vaughan
Modified: 2017-04-18 14:25 UTC (History)
9 users (show)

Tags:
Is this bug a regression?: ---
Last known good build:

Notice (2018-05-24): bugzilla.xamarin.com is now in read-only mode.

Please join us on Visual Studio Developer Community and in the Xamarin and Mono organizations on GitHub to continue tracking issues. Bugzilla will remain available for reference in read-only mode. We will continue to work on open Bugzilla bugs, copy them to the new locations as needed for follow-up, and add the new items under Related Links.

Our sincere thanks to everyone who has contributed on this bug tracker over the years. Thanks also for your understanding as we make these adjustments and improvements for the future.


Please create a new report on Developer Community with your current version information, steps to reproduce, and relevant error messages or log files if you are hitting an issue that looks similar to this resolved bug and you do not yet see a matching new report.

Related Links:
Status:
RESOLVED FIXED

Description Daniel Vaughan 2017-03-17 17:54:20 UTC
I'm referencing a VS 2017 (4.6.01586) .NET Standard 1.4 project from a Xamarin.iOS project. I'm receiving the following error:

Error The "ConvertPdbToMdb" task failed unexpectedly.
Pdb2Mdb.PortablePdbNotSupportedException: Portable PDB '***.pdb' can't be converted to mdb. Consider setting the project 'DebugType' property to 'Full'.
at Pdb2Mdb.Converter.Convert(String filename) in C:\d\lanes\4368\73f58d6d\source\xamarinvs\src\MSBuild\Xamarin.iOS.Tasks\Pdb2mdb\Driver.cs:line 43
at Xamarin.iOS.Tasks.ConvertPdbToMdb.Execute() in C:\d\lanes\4368\73f58d6d\source\xamarinvs\src\MSBuild\Xamarin.iOS.Tasks\Tasks\ConvertPdbToMdb.cs:line 26
at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute()
at Microsoft.Build.BackEnd.TaskBuilder.d__26.MoveNext() Codon.Ios

The project compiles, but the errors sit there in the Visual Studio Error List.
Comment 1 Timothy Risi 2017-03-19 18:29:58 UTC
*** Bug 53476 has been marked as a duplicate of this bug. ***
Comment 2 Christian Daniel 2017-03-22 15:13:58 UTC
I've the exact same Problem (using VS2017 Pro Final; using Xamarin.Forms 180 || 193)

Steps to reproduce:
 - Create new Xamarin.Forms Project 
 - Create a new .Net Standard library (.Net Standard 1.0 - 1.6)
 - reference library within the iOS Project

=> Compile Fails with: Error The "ConvertPdbToMdb" task failed unexpectedly.
Comment 3 Christian Daniel 2017-03-22 15:45:27 UTC
I made some more Tests and found a Workaround!:

1. Open Project properties of the .Net Standard library.
2. On the "Build" Tab, scroll down and press "Advanced"
3. Set "Debugging Information" to "full"

Solution will compile and run!
Comment 4 Daniel Cazzulino 2017-04-06 18:25:35 UTC
Yes, PPDB support is not there yet. We're targeting VS2017 15.2 for this work, which should be quite soon!
Comment 5 Daniel Cazzulino 2017-04-06 18:32:21 UTC
BTW, the workaround of specifying full for the debug symbols is indeed the supported one.
Comment 6 Daniel Cazzulino 2017-04-18 14:25:25 UTC
This has been merged into the release branch for 15.2 and is on track for shipping soon.