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Diffstat (limited to 'src/uint256.cpp')
-rw-r--r--src/uint256.cpp15
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++;
}
}