Непонятная ошибка хеширования string_view

#include <string_view>
#include <format>
#include <iostream>
#include <ranges>

/******************************************************************************/
inline constexpr size_t _hash (const char *str, size_t n=0) {
	// FNV-1a
	size_t res{0xcbf29ce484222325}, prime{0x00000100000001b3};
//	                  vvvvvvvvvvvvvvv здесь была ошибка
//	for (size_t i{0}; i < n or str[i]; ++i) {
	for (size_t i{0}; (i < n) or (n == 0 and str[i]); ++i) { // *fixed* FTGJ
		res = res ^ str[i];
		res = res * prime;
	}
	return res;
}

inline constexpr size_t operator ""_hash (const char *str, size_t n) {
	return _hash (str, n);
};

inline constexpr size_t _hash (const std::string_view &strv) {
	return _hash (strv.data(), strv.size());
};

auto to_string_view = [] (auto &&r) -> std::string_view {
	return std::string_view(&*r.begin(), std::ranges::distance(r));
};

auto not_empty = [](auto x) -> bool {
	return not x.empty();
};

void parse_key_flags(std::string_view input) {

	std::cout<<std::format("\"TOKEN\"_hash = {}\n", "TOKEN"_hash);

	for (auto entry : input
	                | std::views::split(' ')
	                | std::views::filter(not_empty)
	                
	) {
		
		auto row = entry | std::views::split(':')
		                 | std::views::filter(not_empty)
		                 | std::views::transform(to_string_view);
		
		auto key = row.front();
		std::cout<<std::format("key = \"{}\", tokens:\n", key);

		for (auto flag : row
		               | std::views::drop(1)
		               | std::views::transform(to_string_view)
		) {
			std::cout<<std::format("\t\"{}\" (hash = {})",flag, _hash(flag));
			switch (_hash(flag)) {
				default:
					std::cout<<" -> [FAIL]\n";
					continue;
				case "TOKEN"_hash:
					std::cout<<" -> [TOKEN]\n";
			}
		}
	}
}

int main() {
	std::string_view input = "KEY1:TOKEN KEY2:TOKEN:FAIL";
	parse_key_flags(input);

}

"TOKEN"_hash = 15101299456084321266 // ok
key = "KEY1", tokens:
	"TOKEN" (hash = 10353157926286166668) -> [FAIL] // WAT?
key = "KEY2", tokens:
	"TOKEN" (hash = 5196937941191725884) -> [FAIL] // WUT!?
	"FAIL" (hash = 3215402482899151853) -> [FAIL]