diff --git a/runtime/jdwp/jdwp_event.cc b/runtime/jdwp/jdwp_event.cc
index 4aa7f13..e372c26 100644
--- a/runtime/jdwp/jdwp_event.cc
+++ b/runtime/jdwp/jdwp_event.cc
@@ -638,13 +638,14 @@
    * go to sleep indefinitely.
    */
   while (event_thread_id_ != 0) {
-    VLOG(jdwp) << StringPrintf("event in progress (%#llx), %#llx sleeping", event_thread_id_, threadId);
+    VLOG(jdwp) << StringPrintf("event in progress (%#" PRIx64 "), %#" PRIx64 " sleeping",
+                               event_thread_id_, threadId);
     waited = true;
     event_thread_cond_.Wait(self);
   }
 
   if (waited || threadId != 0) {
-    VLOG(jdwp) << StringPrintf("event token grabbed (%#llx)", threadId);
+    VLOG(jdwp) << StringPrintf("event token grabbed (%#" PRIx64 ")", threadId);
   }
   if (threadId != 0) {
     event_thread_id_ = threadId;
@@ -664,7 +665,7 @@
   MutexLock mu(self, event_thread_lock_);
 
   CHECK_NE(event_thread_id_, 0U);
-  VLOG(jdwp) << StringPrintf("cleared event token (%#llx)", event_thread_id_);
+  VLOG(jdwp) << StringPrintf("cleared event token (%#" PRIx64 ")", event_thread_id_);
 
   event_thread_id_ = 0;
 
@@ -820,7 +821,8 @@
     if (match_count != 0) {
       VLOG(jdwp) << "EVENT: " << match_list[0]->eventKind << "(" << match_count << " total) "
                  << basket.className << "." << Dbg::GetMethodName(pLoc->method_id)
-                 << StringPrintf(" thread=%#llx dex_pc=%#llx)", basket.threadId, pLoc->dex_pc);
+                 << StringPrintf(" thread=%#" PRIx64 "  dex_pc=%#" PRIx64 ")",
+                                 basket.threadId, pLoc->dex_pc);
 
       suspend_policy = scanSuspendPolicy(match_list, match_count);
       VLOG(jdwp) << "  suspend_policy=" << suspend_policy;
@@ -885,7 +887,7 @@
 
     if (match_count != 0) {
       VLOG(jdwp) << "EVENT: " << match_list[0]->eventKind << "(" << match_count << " total) "
-                 << StringPrintf("thread=%#llx", basket.threadId) << ")";
+                 << StringPrintf("thread=%#" PRIx64, basket.threadId) << ")";
 
       suspend_policy = scanSuspendPolicy(match_list, match_count);
       VLOG(jdwp) << "  suspend_policy=" << suspend_policy;
@@ -968,8 +970,8 @@
     FindMatchingEvents(EK_EXCEPTION, &basket, match_list, &match_count);
     if (match_count != 0) {
       VLOG(jdwp) << "EVENT: " << match_list[0]->eventKind << "(" << match_count << " total)"
-                 << StringPrintf(" thread=%#llx", basket.threadId)
-                 << StringPrintf(" exceptId=%#llx", exceptionId)
+                 << StringPrintf(" thread=%#" PRIx64, basket.threadId)
+                 << StringPrintf(" exceptId=%#" PRIx64, exceptionId)
                  << " caught=" << basket.caught << ")"
                  << "  throw: " << *pThrowLoc;
       if (pCatchLoc->class_id == 0) {
@@ -1036,7 +1038,7 @@
     FindMatchingEvents(EK_CLASS_PREPARE, &basket, match_list, &match_count);
     if (match_count != 0) {
       VLOG(jdwp) << "EVENT: " << match_list[0]->eventKind << "(" << match_count << " total) "
-                 << StringPrintf("thread=%#llx", basket.threadId) << ") " << signature;
+                 << StringPrintf("thread=%#" PRIx64, basket.threadId) << ") " << signature;
 
       suspend_policy = scanSuspendPolicy(match_list, match_count);
       VLOG(jdwp) << "  suspend_policy=" << suspend_policy;
diff --git a/runtime/jdwp/jdwp_handler.cc b/runtime/jdwp/jdwp_handler.cc
index 523d892..6522a62 100644
--- a/runtime/jdwp/jdwp_handler.cc
+++ b/runtime/jdwp/jdwp_handler.cc
@@ -48,7 +48,7 @@
 std::string DescribeRefTypeId(const RefTypeId& ref_type_id) {
   std::string signature("unknown");
   Dbg::GetSignature(ref_type_id, &signature);
-  return StringPrintf("%#llx (%s)", ref_type_id, signature.c_str());
+  return StringPrintf("%#" PRIx64 " (%s)", ref_type_id, signature.c_str());
 }
 
 // Helper function: write a variable-width value into the output input buffer.
@@ -99,8 +99,9 @@
 
   int32_t arg_count = request.ReadSigned32("argument count");
 
-  VLOG(jdwp) << StringPrintf("    --> thread_id=%#llx object_id=%#llx", thread_id, object_id);
-  VLOG(jdwp) << StringPrintf("        class_id=%#llx method_id=%x %s.%s", class_id,
+  VLOG(jdwp) << StringPrintf("    --> thread_id=%#" PRIx64 " object_id=%#" PRIx64,
+                             thread_id, object_id);
+  VLOG(jdwp) << StringPrintf("        class_id=%#" PRIx64 " method_id=%x %s.%s", class_id,
                              method_id, Dbg::GetClassName(class_id).c_str(),
                              Dbg::GetMethodName(method_id).c_str());
   VLOG(jdwp) << StringPrintf("        %d args:", arg_count);
@@ -111,7 +112,8 @@
     argTypes[i] = request.ReadTag();
     size_t width = Dbg::GetTagWidth(argTypes[i]);
     argValues[i] = request.ReadValue(width);
-    VLOG(jdwp) << "          " << argTypes[i] << StringPrintf("(%zd): %#llx", width, argValues[i]);
+    VLOG(jdwp) << "          " << argTypes[i] << StringPrintf("(%zd): %#" PRIx64, width,
+                                                              argValues[i]);
   }
 
   uint32_t options = request.ReadUnsigned32("InvokeOptions bit flags");
@@ -143,7 +145,8 @@
     expandBufAdd1(pReply, JT_OBJECT);
     expandBufAddObjectId(pReply, exceptObjId);
 
-    VLOG(jdwp) << "  --> returned " << resultTag << StringPrintf(" %#llx (except=%#llx)", resultValue, exceptObjId);
+    VLOG(jdwp) << "  --> returned " << resultTag
+        << StringPrintf(" %#" PRIx64 " (except=%#" PRIx64 ")", resultValue, exceptObjId);
 
     /* show detailed debug output */
     if (resultTag == JT_STRING && exceptObjId == 0) {
@@ -526,7 +529,7 @@
   if (status != ERR_NONE) {
     return status;
   }
-  VLOG(jdwp) << StringPrintf("    --> ObjectId %#llx", class_object_id);
+  VLOG(jdwp) << StringPrintf("    --> ObjectId %#" PRIx64, class_object_id);
   expandBufAddObjectId(pReply, class_object_id);
   return ERR_NONE;
 }
@@ -936,7 +939,7 @@
   if (error != ERR_NONE) {
     return error;
   }
-  VLOG(jdwp) << StringPrintf("  Name of thread %#llx is \"%s\"", thread_id, name.c_str());
+  VLOG(jdwp) << StringPrintf("  Name of thread %#" PRIx64 " is \"%s\"", thread_id, name.c_str());
   expandBufAddUtf8String(pReply, name);
 
   return ERR_NONE;
@@ -1335,7 +1338,7 @@
         ObjectId thread_id = request.ReadThreadId();
         uint32_t size = request.ReadUnsigned32("step size");
         uint32_t depth = request.ReadUnsigned32("step depth");
-        VLOG(jdwp) << StringPrintf("    Step: thread=%#llx", thread_id)
+        VLOG(jdwp) << StringPrintf("    Step: thread=%#" PRIx64, thread_id)
                      << " size=" << JdwpStepSize(size) << " depth=" << JdwpStepDepth(depth);
 
         mod.step.threadId = thread_id;
@@ -1640,7 +1643,7 @@
   std::string result;
   result += "REQUEST: ";
   result += GetCommandName(request);
-  result += StringPrintf(" (length=%d id=0x%06x)", request.GetLength(), request.GetId());
+  result += StringPrintf(" (length=%zu id=0x%06x)", request.GetLength(), request.GetId());
   return result;
 }
 
diff --git a/runtime/jdwp/jdwp_main.cc b/runtime/jdwp/jdwp_main.cc
index 127ebfa..928f53d 100644
--- a/runtime/jdwp/jdwp_main.cc
+++ b/runtime/jdwp/jdwp_main.cc
@@ -156,11 +156,11 @@
   errno = 0;
   ssize_t actual = netState->WriteBufferedPacket(iov);
   if (static_cast<size_t>(actual) != expected) {
-    PLOG(ERROR) << StringPrintf("Failed to send JDWP packet %c%c%c%c to debugger (%d of %d)",
-                                static_cast<uint8_t>(type >> 24),
-                                static_cast<uint8_t>(type >> 16),
-                                static_cast<uint8_t>(type >> 8),
-                                static_cast<uint8_t>(type),
+    PLOG(ERROR) << StringPrintf("Failed to send JDWP packet %c%c%c%c to debugger (%zd of %zu)",
+                                static_cast<char>(type >> 24),
+                                static_cast<char>(type >> 16),
+                                static_cast<char>(type >> 8),
+                                static_cast<char>(type),
                                 actual, expected);
   }
 }
@@ -175,7 +175,7 @@
   errno = 0;
   ssize_t actual = netState->WritePacket(pReq);
   if (static_cast<size_t>(actual) != expandBufGetLength(pReq)) {
-    PLOG(ERROR) << StringPrintf("Failed to send JDWP packet to debugger (%d of %d)",
+    PLOG(ERROR) << StringPrintf("Failed to send JDWP packet to debugger (%zd of %zu)",
                                 actual, expandBufGetLength(pReq));
   }
 }
@@ -607,7 +607,7 @@
 std::ostream& operator<<(std::ostream& os, const JdwpLocation& rhs) {
   os << "JdwpLocation["
      << Dbg::GetClassName(rhs.class_id) << "." << Dbg::GetMethodName(rhs.method_id)
-     << "@" << StringPrintf("%#llx", rhs.dex_pc) << " " << rhs.type_tag << "]";
+     << "@" << StringPrintf("%#" PRIx64, rhs.dex_pc) << " " << rhs.type_tag << "]";
   return os;
 }
 
diff --git a/runtime/jdwp/jdwp_request.cc b/runtime/jdwp/jdwp_request.cc
index a9dd1e1..7b15d6d 100644
--- a/runtime/jdwp/jdwp_request.cc
+++ b/runtime/jdwp/jdwp_request.cc
@@ -16,6 +16,8 @@
 
 #include "jdwp/jdwp.h"
 
+#include <inttypes.h>
+
 #include "base/stringprintf.h"
 #include "jdwp/jdwp_priv.h"
 
@@ -98,7 +100,7 @@
 
 ObjectId Request::ReadObjectId(const char* specific_kind) {
   ObjectId id = Read8BE();
-  VLOG(jdwp) << StringPrintf("    %s id %#llx", specific_kind, id);
+  VLOG(jdwp) << StringPrintf("    %s id %#" PRIx64, specific_kind, id);
   return id;
 }