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-rw-r--r--string.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/string.c b/string.c
index decc9d7f049..9fe344a20fe 100644
--- a/string.c
+++ b/string.c
@@ -1723,7 +1723,7 @@ rb_str_resize(VALUE str, long len)
else if (len <= RSTRING_EMBED_LEN_MAX) {
char *ptr = RSTRING(str)->as.heap.ptr;
STR_SET_EMBED(str);
- if (len > 0) MEMCPY(RSTRING(str)->as.ary, ptr, char, len);
+ if (slen > 0) MEMCPY(RSTRING(str)->as.ary, ptr, char, slen);
RSTRING(str)->as.ary[len] = '\0';
STR_SET_EMBED_LEN(str, len);
if (independent) xfree(ptr);