[libcxx-commits] [PATCH] D59727: [libc++] Fix return value of snprintf_l() on Windows when buffer is too small
Tom Anderson via Phabricator via libcxx-commits
libcxx-commits at lists.llvm.org
Wed Mar 27 11:03:40 PDT 2019
thomasanderson added a comment.
In D59727#1444732 <https://reviews.llvm.org/D59727#1444732>, @zoecarver wrote:
> @thomasanderson `vsnprintf` uses `__stdio_common_vsprintf ` on MSVC. Is there a performance hit when only `vsnprintf ` is used?
`vsnprintf` doesn't have a performance hit, but it doesn't allow setting the locale. The `__libcpp_locale_guard` is the thing that's slow that we're trying to avoid.
CHANGES SINCE LAST ACTION
More information about the libcxx-commits