diff options
Diffstat (limited to 'src/string.c')
| -rw-r--r-- | src/string.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/string.c b/src/string.c index 2d5006612..56eeef3a2 100644 --- a/src/string.c +++ b/src/string.c @@ -754,6 +754,9 @@ mrb_str_concat(mrb_state *mrb, mrb_value self, mrb_value other) other = mrb_str_to_str(mrb, other); } s2 = mrb_str_ptr(other); + if (RSTR_LEN(s2) == 0) { + return; + } len = RSTR_LEN(s1) + RSTR_LEN(s2); if (len < 0 || len >= MRB_INT_MAX) { |