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-rw-r--r--src/lib/math/bigint/big_ops2.cpp4
-rw-r--r--src/lib/math/bigint/bigint.cpp2
2 files changed, 4 insertions, 2 deletions
diff --git a/src/lib/math/bigint/big_ops2.cpp b/src/lib/math/bigint/big_ops2.cpp
index c203f363a..639d87ceb 100644
--- a/src/lib/math/bigint/big_ops2.cpp
+++ b/src/lib/math/bigint/big_ops2.cpp
@@ -21,7 +21,9 @@ BigInt& BigInt::operator+=(const BigInt& y)
const size_t x_sw = sig_words(), y_sw = y.sig_words();
const size_t reg_size = std::max(x_sw, y_sw) + 1;
- grow_to(reg_size);
+
+ if(m_reg.size() < reg_size)
+ grow_to(reg_size);
if(sign() == y.sign())
bigint_add2(mutable_data(), reg_size - 1, y.data(), y_sw);
diff --git a/src/lib/math/bigint/bigint.cpp b/src/lib/math/bigint/bigint.cpp
index b63bd9be8..e5f8974d5 100644
--- a/src/lib/math/bigint/bigint.cpp
+++ b/src/lib/math/bigint/bigint.cpp
@@ -23,7 +23,7 @@ BigInt::BigInt(uint64_t n)
const size_t limbs_needed = sizeof(uint64_t) / sizeof(word);
- m_reg.resize(4*limbs_needed);
+ m_reg.resize(limbs_needed);
for(size_t i = 0; i != limbs_needed; ++i)
m_reg[i] = ((n >> (i*MP_WORD_BITS)) & MP_WORD_MASK);
}