1 files changed, 8 insertions, 7 deletions

diff --git a/src/3rdparty/double-conversion/double-conversion/bignum.cc b/src/3rdparty/double-conversion/double-conversion/bignum.cc
index d858c16ca0..5c74d70d3d 100644
--- a/src/3rdparty/double-conversion/double-conversion/bignum.cc
+++ b/src/3rdparty/double-conversion/double-conversion/bignum.cc
@@ -136,7 +136,7 @@ void Bignum::AssignHexString(Vector<const char> value) {
   DOUBLE_CONVERSION_ASSERT(sizeof(uint64_t) * 8 >= kBigitSize + 4);  // TODO: static_assert
   // Accumulates converted hex digits until at least kBigitSize bits.
   // Works with non-factor-of-four kBigitSizes.
-  uint64_t tmp = 0;  // Accumulates converted hex digits until at least
+  uint64_t tmp = 0;
   for (int cnt = 0; !value.is_empty(); value.pop_back()) {
     tmp |= (HexCharValue(value.last()) << cnt);
     if ((cnt += 4) >= kBigitSize) {
@@ -146,7 +146,8 @@ void Bignum::AssignHexString(Vector<const char> value) {
     }
   }
   if (tmp > 0) {
-    RawBigit(used_bigits_++) = tmp;
+    DOUBLE_CONVERSION_ASSERT(tmp <= kBigitMask);
+    RawBigit(used_bigits_++) = static_cast<Bignum::Chunk>(tmp & kBigitMask);
   }
   Clamp();
 }
@@ -203,7 +204,7 @@ void Bignum::AddBignum(const Bignum& other) {
     carry = sum >> kBigitSize;
     ++bigit_pos;
   }
-  used_bigits_ = (std::max)(bigit_pos, static_cast<int>(used_bigits_));
+  used_bigits_ = static_cast<int16_t>(std::max(bigit_pos, static_cast<int>(used_bigits_)));
   DOUBLE_CONVERSION_ASSERT(IsClamped());
 }
 
@@ -239,7 +240,7 @@ void Bignum::ShiftLeft(const int shift_amount) {
   if (used_bigits_ == 0) {
     return;
   }
-  exponent_ += (shift_amount / kBigitSize);
+  exponent_ += static_cast<int16_t>(shift_amount / kBigitSize);
   const int local_shift = shift_amount % kBigitSize;
   EnsureCapacity(used_bigits_ + 1);
   BigitsShiftLeft(local_shift);
@@ -417,7 +418,7 @@ void Bignum::Square() {
   DOUBLE_CONVERSION_ASSERT(accumulator == 0);
 
   // Don't forget to update the used_digits and the exponent.
-  used_bigits_ = product_length;
+  used_bigits_ = static_cast<int16_t>(product_length);
   exponent_ *= 2;
   Clamp();
 }
@@ -738,8 +739,8 @@ void Bignum::Align(const Bignum& other) {
     for (int i = 0; i < zero_bigits; ++i) {
       RawBigit(i) = 0;
     }
-    used_bigits_ += zero_bigits;
-    exponent_ -= zero_bigits;
+    used_bigits_ += static_cast<int16_t>(zero_bigits);
+    exponent_ -= static_cast<int16_t>(zero_bigits);
 
     DOUBLE_CONVERSION_ASSERT(used_bigits_ >= 0);
     DOUBLE_CONVERSION_ASSERT(exponent_ >= 0);