diff options
Diffstat (limited to 'ext/digest/digest.c')
-rw-r--r-- | ext/digest/digest.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/ext/digest/digest.c b/ext/digest/digest.c index f56a1921f8..63df4b126d 100644 --- a/ext/digest/digest.c +++ b/ext/digest/digest.c @@ -45,7 +45,14 @@ hexdigest_str_new(const unsigned char *digest, size_t digest_len) int i; VALUE str; char *p; - static const char hex[] = "0123456789abcdef"; + static const char hex[] = { + '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', + 'a', 'b', 'c', 'd', 'e', 'f' + }; + + if (LONG_MAX / 2 < digest_len) { + rb_raise(rb_eRuntimeError, "digest string too long"); + } str = rb_str_new(0, digest_len * 2); |