diff options
Diffstat (limited to 'mrbgems/mruby-struct')
| -rw-r--r-- | mrbgems/mruby-struct/src/struct.c | 15 |
1 files changed, 8 insertions, 7 deletions
diff --git a/mrbgems/mruby-struct/src/struct.c b/mrbgems/mruby-struct/src/struct.c index 30ef8d110..44822a03e 100644 --- a/mrbgems/mruby-struct/src/struct.c +++ b/mrbgems/mruby-struct/src/struct.c @@ -384,16 +384,17 @@ struct_aref_sym(mrb_state *mrb, mrb_value obj, mrb_sym id) static mrb_value struct_aref_int(mrb_state *mrb, mrb_value s, mrb_int i) { - if (i < 0) i = RSTRUCT_LEN(s) + i; - if (i < 0) - mrb_raisef(mrb, E_INDEX_ERROR, - "offset %S too small for struct(size:%S)", - mrb_fixnum_value(i), mrb_fixnum_value(RSTRUCT_LEN(s))); - if (RSTRUCT_LEN(s) <= i) + mrb_int idx = i < 0 ? RSTRUCT_LEN(s) + i : i; + + if (idx < 0) + mrb_raisef(mrb, E_INDEX_ERROR, + "offset %S too small for struct(size:%S)", + mrb_fixnum_value(i), mrb_fixnum_value(RSTRUCT_LEN(s))); + if (RSTRUCT_LEN(s) <= idx) mrb_raisef(mrb, E_INDEX_ERROR, "offset %S too large for struct(size:%S)", mrb_fixnum_value(i), mrb_fixnum_value(RSTRUCT_LEN(s))); - return RSTRUCT_PTR(s)[i]; + return RSTRUCT_PTR(s)[idx]; } /* 15.2.18.4.2 */ |