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-rw-r--r--pack.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/pack.c b/pack.c
index a75c02bac60..78789889deb 100644
--- a/pack.c
+++ b/pack.c
@@ -1991,7 +1991,7 @@ pack_unpack(VALUE str, VALUE fmt)
case 'M':
{
VALUE buf = infected_str_new(0, send - s, str);
- char *ptr = RSTRING_PTR(buf);
+ char *ptr = RSTRING_PTR(buf), *ss = s;
int c1, c2;
while (s < send) {
@@ -2010,8 +2010,10 @@ pack_unpack(VALUE str, VALUE fmt)
*ptr++ = *s;
}
s++;
+ ss = s;
}
rb_str_set_len(buf, ptr - RSTRING_PTR(buf));
+ rb_str_buf_cat(buf, ss, send-ss);
ENCODING_CODERANGE_SET(buf, rb_ascii8bit_encindex(), ENC_CODERANGE_VALID);
UNPACK_PUSH(buf);
}