epee: fix array underflow in unicode parsing

Reported by minerscan

Also independently found by OSS-Fuzz just recently
pull/320/head
moneromooo-monero 4 years ago
parent 93257997bd
commit 3721d5688f

@ -196,7 +196,7 @@ namespace misc_utils
uint32_t dst = 0;
for (int i = 0; i < 4; ++i)
{
const unsigned char tmp = isx[(int)*++it];
const unsigned char tmp = isx[(unsigned char)*++it];
CHECK_AND_ASSERT_THROW_MES(tmp != 0xff, "Bad Unicode encoding");
dst = dst << 4 | tmp;
}

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