fix compare length

SakiTakamachi · web-flow · commit 64eb41a99802 · 2024-05-11T07:53:30.000+09:00
diff --git a/ext/bcmath/libbcmath/src/doaddsub.c b/ext/bcmath/libbcmath/src/doaddsub.c
@@ -140,11 +140,11 @@ bc_num _bc_do_add(bc_num n1, bc_num n2, size_t scale_min)
 	}
 
 	/* Now add carry the longer integer part. */
-	if (sum_len != min_len) {
+	if (sum_len - 1 != min_len) {
 		if (n2->n_len > n1->n_len) {
 			n1ptr = n2ptr;
 		}
-		for (count = sum_len - min_len; count > 0; count--) {
+		for (count = sum_len - 1 - min_len; count > 0; count--) {
 			*sumptr = *n1ptr-- + carry;
 			if (*sumptr >= BASE) {
 				*sumptr -= BASE;

Original file line number	Diff line number	Diff line change
`@@ -140,11 +140,11 @@ bc_num _bc_do_add(bc_num n1, bc_num n2, size_t scale_min)`
`140`	`140`	`}`
`141`	`141`
`142`	`142`	`/* Now add carry the longer integer part. */`
`143`		`- if (sum_len != min_len) {`
	`143`	`+ if (sum_len - 1 != min_len) {`
`144`	`144`	`if (n2->n_len > n1->n_len) {`
`145`	`145`	`n1ptr = n2ptr;`
`146`	`146`	`}`
`147`		`- for (count = sum_len - min_len; count > 0; count--) {`
	`147`	`+ for (count = sum_len - 1 - min_len; count > 0; count--) {`
`148`	`148`	`sumptr = n1ptr-- + carry;`
`149`	`149`	`if (*sumptr >= BASE) {`
`150`	`150`	`*sumptr -= BASE;`