tree 810ef6f6f8ad8038ed9a2969e49a0b6135b7fee9
parent dd7a0acffd0c812b95d171c717358d1c885f0843
author Kostya Kortchinsky <kostyak@google.com> 1627936694 -0700
committer Copybara-Service <copybara-worker@google.com> 1628229732 -0700

[scudo] Make Vector() constexpr

A `Vector` that doesn't require an initial `reserve()` (eg: with a
default, or small enough capacity) can have a constant initializer.

This changes the code in a few places to make that possible:
- mark a few other functions as `constexpr`
- do without any `reinterpret_cast`
- allow to skip `reserve` from `init`

Differential Revision: https://reviews.llvm.org/D107308

GitOrigin-RevId: 23a94af44939b094f9ba2d6bb969f5a48b78fa8c