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duel.cpp

@@ -131,13 +131,14 @@ void duel::set_response(const void* resp, size_t len) {
 }
 // uniform integer distribution
 int32_t duel::get_next_integer(int32_t l, int32_t h) {
-	const uint32_t range = h - l + 1;
-	const uint32_t lim = random.max() % range;
+	assert(l <= h);
+	const uint64_t range = int64_t(h) - int64_t(l) + 1;
+	const uint64_t lim = random.max() % range;
 	uint64_t n;
 	do {
 		n = random();
 	} while(n <= lim);
-	return static_cast<int32_t>(n % range) + l;
+	return static_cast<int32_t>((n % range) + l);
 }
 duel::duel_message* duel::new_message(uint8_t message) {
 	return &(messages.emplace_back(message));