2 files changed, 4 insertions, 6 deletions
diff --git a/absl/strings/internal/charconv_bigint.cc b/absl/strings/internal/charconv_bigint.cc
index 282b639e..46b5289a 100644
--- a/absl/strings/internal/charconv_bigint.cc
+++ b/absl/strings/internal/charconv_bigint.cc
@@ -296,10 +296,8 @@ template <int max_words>
         std::min(n / kLargePowerOfFiveStep, kLargestPowerOfFiveIndex);
     if (first_pass) {
       // just copy, rather than multiplying by 1
-      std::copy(
-          LargePowerOfFiveData(big_power),
-          LargePowerOfFiveData(big_power) + LargePowerOfFiveSize(big_power),
-          answer.words_);
+      std::copy_n(LargePowerOfFiveData(big_power),
+                  LargePowerOfFiveSize(big_power), answer.words_);
       answer.size_ = LargePowerOfFiveSize(big_power);
       first_pass = false;
     } else {
diff --git a/absl/strings/internal/charconv_bigint.h b/absl/strings/internal/charconv_bigint.h
index 8f702976..d8992386 100644
--- a/absl/strings/internal/charconv_bigint.h
+++ b/absl/strings/internal/charconv_bigint.h
@@ -121,7 +121,7 @@ class BigUnsigned {
           ++size_;
         }
       }
-      std::fill(words_, words_ + word_shift, 0u);
+      std::fill_n(words_, word_shift, 0u);
     }
   }
 
@@ -197,7 +197,7 @@ class BigUnsigned {
   }
 
   void SetToZero() {
-    std::fill(words_, words_ + size_, 0u);
+    std::fill_n(words_, size_, 0u);
     size_ = 0;
   }