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-rw-r--r--src/math/bigint/big_io.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/math/bigint/big_io.cpp b/src/math/bigint/big_io.cpp
index 095d56510..b561c218f 100644
--- a/src/math/bigint/big_io.cpp
+++ b/src/math/bigint/big_io.cpp
@@ -29,7 +29,7 @@ std::ostream& operator<<(std::ostream& stream, const BigInt& n)
stream.write("-", 1);
const std::vector<byte> buffer = BigInt::encode(n, base);
size_t skip = 0;
- while(buffer[skip] == '0' && skip < buffer.size())
+ while(skip < buffer.size() && buffer[skip] == '0')
++skip;
stream.write(reinterpret_cast<const char*>(&buffer[0]) + skip,
buffer.size() - skip);