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| author | Kurt Roeckx <kurt@roeckx.be> | 2016-07-17 15:28:09 +0200 |
|---|---|---|
| committer | Kurt Roeckx <kurt@roeckx.be> | 2016-07-20 19:25:16 +0200 |
| commit | 1618679ac478c8f41fc5f320fb4d8a33883b3868 (patch) | |
| tree | 226153f11e35f97136574bdaaec6ce6dc5f745ec /crypto/asn1/x_long.c | |
| parent | 69588edbaa424beb71c6a9b1be416588232cb78c (diff) | |
| download | openssl-1618679ac478c8f41fc5f320fb4d8a33883b3868.zip openssl-1618679ac478c8f41fc5f320fb4d8a33883b3868.tar.gz openssl-1618679ac478c8f41fc5f320fb4d8a33883b3868.tar.bz2 | |
Cast to an unsigned type before negating
llvm's ubsan reported:
runtime error: negation of -9223372036854775808 cannot be represented in type
'long'; cast to an unsigned type to negate this value to itself
Found using afl
Reviewed-by: Rich Salz <rsalz@openssl.org>
GH: #1325
Diffstat (limited to 'crypto/asn1/x_long.c')
| -rw-r--r-- | crypto/asn1/x_long.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/crypto/asn1/x_long.c b/crypto/asn1/x_long.c index 0af7875..e86e4c7 100644 --- a/crypto/asn1/x_long.c +++ b/crypto/asn1/x_long.c @@ -76,7 +76,7 @@ static int long_i2c(ASN1_VALUE **pval, unsigned char *cont, int *putype, * set. */ if (ltmp < 0) - utmp = -ltmp - 1; + utmp = -(unsigned long)ltmp - 1; else utmp = ltmp; clen = BN_num_bits_word(utmp); |