[compiler-rt] [sanitizer-common] [Darwin] Fix overlapping dyld segment addresses (PR #166005)

[Andrew Haberlandt via llvm-commits]

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@@ -445,6 +443,56 @@ bool MemoryMappingLayout::Next(MemoryMappedSegment *segment) {
   return false;
 }
 
+// NOTE: Verify expects to be called immediately after Reset(), since otherwise
+// it may miss some mappings. Verify will Reset() the layout after verification.
+bool MemoryMappingLayout::Verify() {
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ndrewh wrote:

This is not straightforward as a static function because `data_` is a private member of `MemoryMappedSegment` which is only accessible inside `MemoryMappingLayout` because it is a `friend class`.

https://github.com/llvm/llvm-project/pull/166005