On Tue, Oct 01, 2024 at 11:10:03AM +0100, Jonathan Wakely wrote:
> Let's use an inline variable. A function-local static requires
> __cxa_guard_acquire, which (for some targets, including the ones
> affected by this change) uses __gthread_active_p which will
> recursively re-enter the variable's initialization.
>
> So something like:
>
> #pragma GCC diagnostic push
> #pragma GCC diagnostic ignored "-Wc++17-extensions"
> inline volatile int __gthread_active = -1;
> #pragma GCC diagnostic pop
Note, only for #ifdef __cplusplus, for C there is no such thing as inline
variables and in that case it should use
static volatile int __ghtread_active = -1;
instead.
Jakub
