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[release/5.0] Leftover Utf8String defines are causing ILLinker warnings - #41680
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The CreateRuntimeRootILLinkDescriptorFile task, which generates most of S.P.CoreLib's ILLink.Descriptor file for coreclr, doesn't respect #ifdefs. So even though FEATURE_UTF8STRING is disabled in the release/5.0 branch, it is still generating entries for Char8 and Utf8String. But since these managed types do not exist, the ILLinker is raising warnings. To fix this, comment the DEFINE_CLASS entries out of the header file. Fix dotnet#41654
eerhardt
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GrabYourPitchforks,
ericstj,
jkotas and
vitek-karas
September 1, 2020 16:43
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I couldn't figure out the best area label to add to this PR. If you have write-permissions please help me learn by adding exactly one area label. |
jkotas
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Sep 1, 2020
jeffschwMSFT
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Approved. Please merge once you we have confidence on ci
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Approved for RC1 |
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The CreateRuntimeRootILLinkDescriptorFile task, which generates most of S.P.CoreLib's ILLink.Descriptor file for coreclr, doesn't respect #ifdefs. So even though FEATURE_UTF8STRING is disabled in the release/5.0 branch, it is still generating entries for Char8 and Utf8String. But since these managed types do not exist in the release/5.0 branch, the ILLinker is raising warnings.
To fix this, comment the DEFINE_CLASS entries out of the header file.
Fix #41654
Customer Impact
This fixes #41654. If anyone tries to link a coreclr application (console, asp.net, winforms, etc) they are getting warnings that they cannot fix.
Testing
I verified that linking with the new System.Private.CoreLib is no longer producing warnings by default.
Risk
Low - I commented out code that is already behind a
#ifdefthat is turned off.Notes
I chose to go the surgical route of removing these from the .h file instead of the full blown route of removing the all the
FEATURE_UTF8STRINGcode because it is a safer change to make at this point in 5.0.