diff options
Diffstat (limited to 'string.c')
-rw-r--r-- | string.c | 3 |
1 files changed, 3 insertions, 0 deletions
@@ -1914,6 +1914,9 @@ rb_str_modify_expand(VALUE str, long expand) else if (expand > 0) { long len = RSTRING_LEN(str); long capa = len + expand; + if (expand >= LONG_MAX - len - termlen) { + rb_raise(rb_eArgError, "string size too big"); + } if (!STR_EMBED_P(str)) { REALLOC_N(RSTRING(str)->as.heap.ptr, char, capa + termlen); RSTRING(str)->as.heap.aux.capa = capa; |