[libcxx-commits] [libcxx] [libc++][chrono] Loads tzdata.zi in tzdb. (PR #74928)

[Louis Dionne via libcxx-commits]

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@@ -31,6 +37,9 @@ namespace chrono {
 
 struct _LIBCPP_AVAILABILITY_TZDB tzdb {
   string version;
+  vector<pair<string, vector<__tz::__rule>>> __rules;
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ldionne wrote:

What we really want here is `std::flat_map<string, vector<__tz::__rule>>`. I suggest we use `std::map` for now and switch it to `flat_map` once it is implemented. We could aim to have both in LLVM 19.

https://github.com/llvm/llvm-project/pull/74928