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-rw-r--r--src/array.c12
1 files changed, 8 insertions, 4 deletions
diff --git a/src/array.c b/src/array.c
index 981da7afb..29f58d17e 100644
--- a/src/array.c
+++ b/src/array.c
@@ -566,9 +566,11 @@ mrb_ary_set(mrb_state *mrb, mrb_value ary, mrb_int n, mrb_value val) /* rb_ary_s
ary_modify(mrb, a);
/* range check */
- if (n < 0) n += a->len;
if (n < 0) {
- mrb_raise(mrb, E_INDEX_ERROR, "index %ld out of array", n - a->len);
+ n += a->len;
+ if (n < 0) {
+ mrb_raise(mrb, E_INDEX_ERROR, "index %ld out of array", n - a->len);
+ }
}
if (a->len <= (int)n) {
if (a->aux.capa <= (int)n)
@@ -592,9 +594,11 @@ mrb_ary_splice(mrb_state *mrb, mrb_value ary, mrb_int head, mrb_int len, mrb_val
ary_modify(mrb, a);
/* range check */
- if (head < 0) head += a->len;
if (head < 0) {
- mrb_raise(mrb, E_INDEX_ERROR, "index is out of array");
+ head += a->len;
+ if (head < 0) {
+ mrb_raise(mrb, E_INDEX_ERROR, "index is out of array");
+ }
}
tail = head + len;