diff --git a/benchmarks/bionic_benchmarks.cpp b/benchmarks/bionic_benchmarks.cpp
index a5d7267..e4c32fa 100644
--- a/benchmarks/bionic_benchmarks.cpp
+++ b/benchmarks/bionic_benchmarks.cpp
@@ -16,6 +16,7 @@
 
 #include <err.h>
 #include <getopt.h>
+#include <inttypes.h>
 #include <math.h>
 #include <sys/resource.h>
 
@@ -85,7 +86,7 @@
   {0, 0, 0, 0},
 };
 
-typedef std::vector<std::vector<int>> args_vector_t;
+typedef std::vector<std::vector<int64_t>> args_vector_t;
 
 void Usage() {
   printf("Usage:\n");
@@ -212,15 +213,16 @@
 static constexpr char kOnebufManualStr[] = "AT_ONEBUF_MANUAL_ALIGN_";
 static constexpr char kTwobufManualStr[] = "AT_TWOBUF_MANUAL_ALIGN1_";
 
-static bool ParseOnebufManualStr(std::string& arg, std::vector<int>* values) {
+static bool ParseOnebufManualStr(std::string& arg, std::vector<int64_t>* values) {
   // The format of this is:
   //   AT_ONEBUF_MANUAL_ALIGN_XX_SIZE_YY
   // Where:
   //   XX is the alignment
   //   YY is the size
-  int align;
-  int size;
-  if (sscanf(arg.c_str(), "AT_ONEBUF_MANUAL_ALIGN_%d_SIZE_%d" , &align, &size) != 2) {
+  int64_t align;
+  int64_t size;
+  if (sscanf(arg.c_str(), "AT_ONEBUF_MANUAL_ALIGN_%" SCNd64 "_SIZE_%" SCNd64,
+             &align, &size) != 2) {
     return false;
   }
 
@@ -228,22 +230,22 @@
     return false;
   }
 
-  values->push_back(static_cast<int>(size));
-  values->push_back(static_cast<int>(align));
+  values->push_back(static_cast<int64_t>(size));
+  values->push_back(static_cast<int64_t>(align));
   return true;
 }
 
-static bool ParseTwobufManualStr(std::string& arg, std::vector<int>* values) {
+static bool ParseTwobufManualStr(std::string& arg, std::vector<int64_t>* values) {
   // The format of this is:
   //   AT_TWOBUF_MANUAL_ALIGN1_XX_ALIGN2_YY_SIZE_ZZ
   // Where:
   //   XX is the alignment of the first argument
   //   YY is the alignment of the second argument
   //   ZZ is the size
-  int align1;
-  int align2;
-  int size;
-  if (sscanf(arg.c_str(), "AT_TWOBUF_MANUAL_ALIGN1_%d_ALIGN2_%d_SIZE_%d" ,
+  int64_t align1;
+  int64_t align2;
+  int64_t size;
+  if (sscanf(arg.c_str(), "AT_TWOBUF_MANUAL_ALIGN1_%" SCNd64 "_ALIGN2_%" SCNd64 "_SIZE_%" SCNd64,
              &align1, &align2, &size) != 3) {
     return false;
   }
@@ -254,9 +256,9 @@
     return false;
   }
 
-  values->push_back(static_cast<int>(size));
-  values->push_back(static_cast<int>(align1));
-  values->push_back(static_cast<int>(align2));
+  values->push_back(static_cast<int64_t>(size));
+  values->push_back(static_cast<int64_t>(align1));
+  values->push_back(static_cast<int64_t>(align2));
   return true;
 }
 
@@ -270,7 +272,7 @@
   }
   // Check for free form macro.
   if (android::base::StartsWith(args, kOnebufManualStr)) {
-    std::vector<int> values;
+    std::vector<int64_t> values;
     if (!ParseOnebufManualStr(args, &values)) {
       errx(1, "ERROR: Bad format of macro %s, should be AT_ONEBUF_MANUAL_ALIGN_XX_SIZE_YY",
            args.c_str());
@@ -278,7 +280,7 @@
     to_populate->push_back(std::move(values));
     return to_populate;
   } else if (android::base::StartsWith(args, kTwobufManualStr)) {
-    std::vector<int> values;
+    std::vector<int64_t> values;
     if (!ParseTwobufManualStr(args, &values)) {
       errx(1,
            "ERROR: Bad format of macro %s, should be AT_TWOBUF_MANUAL_ALIGN1_XX_ALIGNE2_YY_SIZE_ZZ",
@@ -288,7 +290,7 @@
     return to_populate;
   }
 
-  to_populate->push_back(std::vector<int>());
+  to_populate->push_back(std::vector<int64_t>());
   std::stringstream sstream(args);
   std::string argstr;
   while (sstream >> argstr) {
@@ -318,7 +320,7 @@
   }
 
   benchmark_func_t benchmark_function = g_str_to_func.at(fn_name).first;
-  for (const std::vector<int>& args : (*run_args)) {
+  for (const std::vector<int64_t>& args : (*run_args)) {
     auto registration = benchmark::RegisterBenchmark(fn_name.c_str(), LockAndRun,
                                                      benchmark_function,
                                                      cpu_to_use)->Args(args);