Use default tuple fields in conversion since fields from inferred names are marked not usable in C#7 #21553
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Customer scenario
Create an unnamed tuple with an implicit conversion to a named tuple in C#7.1 with the default language version (C#7.0). Or use deconstruction assignment where the RHS contains two or more tuple literals with different types and inferred names.
Bugs this fixes:
#21028
#21518
Workarounds, if any
Rewrite the expression to use explicit conversions or explicit tuple element names.
Risk
Low
Performance impact
None
Is this a regression from a previous update?
Regression from inferred tuple names.
How was the bug found?
Customer reported