diff options
| -rw-r--r-- | src/string.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/src/string.c b/src/string.c index 56eeef3a2..d41237f44 100644 --- a/src/string.c +++ b/src/string.c @@ -158,6 +158,8 @@ str_buf_cat(mrb_state *mrb, struct RString *s, const char *ptr, size_t len) capa = RSTRING_EMBED_LEN_MAX; else capa = s->as.heap.aux.capa; + if (capa <= RSTRING_EMBED_LEN_MAX) + capa = RSTRING_EMBED_LEN_MAX+1; total = RSTR_LEN(s)+len; if (total >= MRB_INT_MAX) { |