swift-mirror/test/Interpreter/Inputs/dynamic_replacement_ReplacementA.swift at constraintResolutionFix - swift-mirror - Gitea: Git with a cup of tea

averello/swift-mirror

mirror of https://github.com/apple/swift.git synced 2025-12-14 20:36:38 +01:00

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Arnold Schwaighofer 1e82ef8df7 Fix dynamic replacement of weakly linked symbols

If the replaced symbol goes away in the original library, the
replacement key in the replacement descriptor will be null. Handle this
by ignoring the replacement entry rather than crashing.

rdar://103307821

2022-12-15 13:19:34 -08:00

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Swift

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 @_weakLinked import LibA
 extension A {
   @_dynamicReplacement(for: printThis())
   func _replacementForPrintThis() {
     Swift.print("replacement")
   }
 }