Thomas Munro <thomas.mu...@enterprisedb.com> writes: > Ahh, OpenSSL's armcap.c shows how to do this. You need to > siglongjmp() out of there. Here's a patch that does it that way. > Isn't this better?
Do you really need the pg_crc32c_armv8_choose_dummy global variable? That seems pretty ugly. If you're concerned about the compiler optimizing away the call to the crc function, you could write it like result = (pg_comp_crc32c_armv8(0, 0, 0) == expected-value); which'd provide a bit of extra checking that the code's not broken, too. regards, tom lane