Remove now-redundant thing

Catfish-Man · Catfish-Man · commit 0eed4cc26262 · 2025-03-28T14:10:16.000-07:00
diff --git a/stdlib/public/core/StringGuts.swift b/stdlib/public/core/StringGuts.swift
@@ -251,7 +251,6 @@ extension _StringGuts {
       // was added to _StringObject. Retry the fast path if so.
       return try withCString(body)
     }
-    _internalInvariant(!_object.isFastZeroTerminated)
     return try String(self).utf8CString.withUnsafeBufferPointer {
       let ptr = unsafe $0.baseAddress._unsafelyUnwrappedUnchecked
       return try unsafe body(ptr)

Original file line number	Diff line number	Diff line change
`@@ -251,7 +251,6 @@ extension _StringGuts {`
`251`	`251`	`// was added to _StringObject. Retry the fast path if so.`
`252`	`252`	`return try withCString(body)`
`253`	`253`	`}`
`254`		`- _internalInvariant(!_object.isFastZeroTerminated)`
`255`	`254`	`return try String(self).utf8CString.withUnsafeBufferPointer {`
`256`	`255`	`let ptr = unsafe $0.baseAddress._unsafelyUnwrappedUnchecked`
`257`	`256`	`return try unsafe body(ptr)`