Assert that tap vars are in the current DeclContext #20303
Merged
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This assertion would have caught the last-minute bug in the string interpolation rework, but I'm not sure it actually holds in all cases—I've already found one exception (single-expression closures) and there may be others.
I'm running it against more code to see if there are other special cases I need to account for, or if this is not a general rule I can rely on.