I feel like I have asked this before. Currently, GCC uses calls to __tls_get_addr to obtain the address of global-dynamic TLS variables. On other architectures with support for GNU2 TLS descriptors, those are used by default.
Should we flip the default to GNU2 descriptors? Support has been available in glibc for a long, long time. Is there any other reason for not doing this? On the glibc side, the behavior regarding lazy initialization and symbol binding does not change whether the old or new interface is used. Thanks, Florian
