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* io.c (setup_narg): fix off by one bug.

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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@33714 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
kosaki 2011-11-12 02:12:19 +00:00
parent eec252e2e5
commit f13d10a0af
2 changed files with 8 additions and 5 deletions
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9
io.c
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@ -7959,13 +7959,12 @@ setup_narg(int cmd, VALUE *argp, int io_p)
len = 256;
rb_str_modify(arg);
if (len <= RSTRING_LEN(arg)) {
len = RSTRING_LEN(arg);
}
if (RSTRING_LEN(arg) < len) {
/* expand for data + sentinel. */
if (RSTRING_LEN(arg) < len+1) {
rb_str_resize(arg, len+1);
}
RSTRING_PTR(arg)[len] = 17; /* a little sanity check here */
/* a little sanity check here */
RSTRING_PTR(arg)[RSTRING_LEN(arg) - 1] = 17;
narg = (long)(SIGNED_VALUE)RSTRING_PTR(arg);
}
}