On Wed, 9 Jul 2025, Kirill Makurin wrote:
Do I understand correctly that libc++ is only built and tested with
UCRT? If this is the case, this means that only btowc and wctob were
effectively tested, since replacements for the rest are only used for
msvcrt.dll and older CRTs.
Yes, that's true - the libc++ testsuite doesn't pass with msvcrt.dll.
I have an un-upstreamed patchset that tweaks the libc++ tests to add the
necessary XFAIL markings for it, but I haven't had time to pursue it (and
upstreaming things to libc++ is slow and hard overall). So if we'd want to
test that configuration, we'd need to carry the necessary patches for the
libc++ testsuite in the mingw-w64 rpeo.
// Martin
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