Widen the cache ttl before multiplying it

A ttl in the tens of millions of minutes overflowed the int it was
multiplied in.

1 file changed, 3 insertions, 1 deletion

diff --git a/source/cache.c b/source/cache.cindex af391db..a076823 100644--- a/source/cache.c+++ b/source/cache.c@@ -189,7 +189,9 @@ static int is_expired(struct cache_slot *slot) { 	if (slot->ttl < 0) 		return 0;-	return slot->st.st_mtime + slot->ttl * SECONDS_PER_MINUTE < time(NULL);+	// Widened before the multiply, since a ttl in the tens of millions of+	// minutes overflows an int.+	return slot->st.st_mtime + (time_t)slot->ttl * SECONDS_PER_MINUTE < time(NULL); }  /*
diff --git a/source/cache.c b/source/cache.c
index af391db..a076823 100644
--- a/source/cache.c
+++ b/source/cache.c
@@ -189,7 +189,9 @@ static int is_expired(struct cache_slot *slot)
 {
 	if (slot->ttl < 0)
 		return 0;
-	return slot->st.st_mtime + slot->ttl * SECONDS_PER_MINUTE < time(NULL);
+	// Widened before the multiply, since a ttl in the tens of millions of
+	// minutes overflows an int.
+	return slot->st.st_mtime + (time_t)slot->ttl * SECONDS_PER_MINUTE < time(NULL);
 }
 
 /*