diff options
| -rw-r--r-- | src/uint256.cpp | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/src/uint256.cpp b/src/uint256.cpp index e3bc9712e8..ea7164c1f0 100644 --- a/src/uint256.cpp +++ b/src/uint256.cpp @@ -37,16 +37,15 @@ void base_blob<BITS>::SetHex(const char* psz) psz += 2; // hex string to uint - const char* pbegin = psz; - while (::HexDigit(*psz) != -1) - psz++; - psz--; + size_t digits = 0; + while (::HexDigit(psz[digits]) != -1) + digits++; unsigned char* p1 = (unsigned char*)data; unsigned char* pend = p1 + WIDTH; - while (psz >= pbegin && p1 < pend) { - *p1 = ::HexDigit(*psz--); - if (psz >= pbegin) { - *p1 |= ((unsigned char)::HexDigit(*psz--) << 4); + while (digits > 0 && p1 < pend) { + *p1 = ::HexDigit(psz[--digits]); + if (digits > 0) { + *p1 |= ((unsigned char)::HexDigit(psz[--digits]) << 4); p1++; } } |