diff --git a/libc/src/string/CMakeLists.txt b/libc/src/string/CMakeLists.txt
--- a/libc/src/string/CMakeLists.txt
+++ b/libc/src/string/CMakeLists.txt
@@ -246,6 +246,7 @@
     .memory_utils.memcpy_implementation
     .string_utils
     libc.include.stdlib
+    libc.src.__support.CPP.new
 )
 
 add_entrypoint_object(
diff --git a/libc/src/string/strndup.cpp b/libc/src/string/strndup.cpp
--- a/libc/src/string/strndup.cpp
+++ b/libc/src/string/strndup.cpp
@@ -10,10 +10,10 @@
 #include "src/string/memory_utils/memcpy_implementations.h"
 #include "src/string/string_utils.h"
 
+#include "src/__support/CPP/new.h"
 #include "src/__support/common.h"
 
 #include <stddef.h>
-#include <stdlib.h>
 
 namespace __llvm_libc {
 
@@ -23,8 +23,9 @@
   size_t len = internal::string_length(src);
   if (len > size)
     len = size;
-  char *dest = reinterpret_cast<char *>(::malloc(len + 1));
-  if (dest == nullptr)
+  AllocChecker ac;
+  char *dest = new (ac) char[len];
+  if (!ac)
     return nullptr;
   inline_memcpy(dest, src, len + 1);
   dest[len] = '\0';