diff options
Diffstat (limited to 'src/arith_uint256.cpp')
| -rw-r--r-- | src/arith_uint256.cpp | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/src/arith_uint256.cpp b/src/arith_uint256.cpp index 2e61363576..b4952af6f4 100644 --- a/src/arith_uint256.cpp +++ b/src/arith_uint256.cpp @@ -1,5 +1,5 @@ // Copyright (c) 2009-2010 Satoshi Nakamoto -// Copyright (c) 2009-2014 The Bitcoin developers +// Copyright (c) 2009-2016 The Bitcoin Core developers // Distributed under the MIT software license, see the accompanying // file COPYING or http://www.opensource.org/licenses/mit-license.php. @@ -15,6 +15,8 @@ template <unsigned int BITS> base_uint<BITS>::base_uint(const std::string& str) { + static_assert(BITS/32 > 0 && BITS%32 == 0, "Template parameter BITS must be a positive multiple of 32."); + SetHex(str); } @@ -173,9 +175,9 @@ unsigned int base_uint<BITS>::bits() const { for (int pos = WIDTH - 1; pos >= 0; pos--) { if (pn[pos]) { - for (int bits = 31; bits > 0; bits--) { - if (pn[pos] & 1 << bits) - return 32 * pos + bits + 1; + for (int nbits = 31; nbits > 0; nbits--) { + if (pn[pos] & 1 << nbits) + return 32 * pos + nbits + 1; } return 32 * pos + 1; } |