https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103887
--- Comment #4 from Michal Kubecek <m...@mk-sys.cz> ---
It's probably even more complicated as
#define ASSERT_ON_COMPILE_SELECTOR_SIZE(expr) \
_Static_assert( \
__builtin_choose_expr(__builtin_constant_p(expr), \
((expr) >> 16) == 0, \
sizeof(expr) <= 2), \
"problem")
works as expected (tested with "uint16_t tr", "uint32_t tr", 60000 and 70000)
even if the documentation says first argument of __builtin_choose_expr() has
to be a constant expression.
As this is nicer than the original code, I guess I'll use it and hope it is
not just a happy coincidence that it works.
