On Tue, Aug 21, 2018 at 5:08 AM, Jeffrey Walton <noloader@xxxxxxxxx> wrote:
> Hi everyone,
>
> I have some boilerplate call_once code that sets a few function pointers:
>
> std::once_flag s_flag;
> InitializeInteger::InitializeInteger()
> {
> std::call_once(s_flag, []() {
> SetFunctionPointers();
> });
> }
Cancel... It looks like there are a lot of bad interactions with
libstdc++, glibc and pthreads. Cf.,
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66146.
We are going to move onto to something else. Since we are only writing
function pointers an old doubled-checked init should work fine. It
does not matter if the function pointer gets written twice during the
first race (if it occurs).
Jeff
