Niels Lohmann 7196bc5b22 iter_impl: keep the type-dependent initialization in the constructor ...

The check is not needed for correctness (m_it is value-initialized), but
without it GCC 13 generates slower iteration loops: a recursive walk over
a parsed document takes 0.5-2.7 % longer (callgrind: +1.9 % instructions
on twitter.json, +0.95 % on canada.json). Clang generates identical code
either way. See the measurements in #6005.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

2026-11-02 10:05:54 +01:00

..

nlohmann

iter_impl: keep the type-dependent initialization in the constructor

2026-11-02 10:05:54 +01:00