catchorg/Catch2 v3.15.0

on GitHub

Fixes

• Fixed ambiguous overload issue with std::optional<T> in C++26. (#3095)
  • Since std::optional was turned into a range, the partial specialization of StringMaker for range-like types and for std::optional<T> were in conflict.

Improvements

• Simplified CATCH_REGISTER_ENUM internals for faster compilation and retrieval.
• Successful assertion are slightly (1-2%) faster.
• Generic (new-style) matchers support constexpr matching in C++20.
  • Combining matchers requires C++26.
  • Catch2-provided generic matchers are all constexpr enabled.
• Added STATIC_REQUIRE_THAT for compile-time matcher assertions.
  • This requires the compiler to support enough constexpr for matchers, see above.