[PATCH] D71342: [sanitizer] Construct InternalMmapVector without memory allocation.

[Igor Kudrin via Phabricator via llvm-commits]

ikudrin added a comment.

I'd like to note that this is not a purely theoretical issue. It can be observed, for example, in `Symbolizer::ModuleNameOwner` on a 64-bit platform with 4K memory pages. The default constructor for `storage_` allocates one memory page, which is immediately replaced by a new allocation in the call to `reserve()` for `1000` elements, which requires `8 * 1000 = 8000` bytes, or two pages.


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https://reviews.llvm.org/D71342