diff --git a/runtime/vm/compiler/assembler/disassembler.cc b/runtime/vm/compiler/assembler/disassembler.cc
index 3037952..01312ca 100644
--- a/runtime/vm/compiler/assembler/disassembler.cc
+++ b/runtime/vm/compiler/assembler/disassembler.cc
@@ -198,7 +198,7 @@
       }
       if (!first) {
         f.Print("]\n");
-        formatter->Print(str);
+        formatter->Print("%s", str);
       }
     }
     int instruction_length;
diff --git a/runtime/vm/compiler/assembler/disassembler.h b/runtime/vm/compiler/assembler/disassembler.h
index cb74322..b43f894 100644
--- a/runtime/vm/compiler/assembler/disassembler.h
+++ b/runtime/vm/compiler/assembler/disassembler.h
@@ -33,7 +33,7 @@
                                   uword pc) = 0;
 
   // Print a formatted message.
-  virtual void Print(const char* format, ...) = 0;
+  virtual void Print(const char* format, ...) PRINTF_ATTRIBUTE(2, 3) = 0;
 };
 
 // Basic disassembly formatter that outputs the disassembled instruction
diff --git a/runtime/vm/compiler/assembler/disassembler_kbc.cc b/runtime/vm/compiler/assembler/disassembler_kbc.cc
index a51753b..0899494 100644
--- a/runtime/vm/compiler/assembler/disassembler_kbc.cc
+++ b/runtime/vm/compiler/assembler/disassembler_kbc.cc
@@ -320,7 +320,7 @@
       }
       if (!first) {
         f.Print("]\n");
-        formatter->Print(str);
+        formatter->Print("%s", str);
       }
     }
     int instruction_length;
diff --git a/runtime/vm/compiler/frontend/constant_evaluator.cc b/runtime/vm/compiler/frontend/constant_evaluator.cc
index 674a6b3..a59c3a0 100644
--- a/runtime/vm/compiler/frontend/constant_evaluator.cc
+++ b/runtime/vm/compiler/frontend/constant_evaluator.cc
@@ -146,7 +146,7 @@
       default:
         H.ReportError(
             script_, TokenPosition::kNoSource,
-            "Not a constant expression: unexpected kernel tag %s (%" Pd ")",
+            "Not a constant expression: unexpected kernel tag %s (%d)",
             Reader::TagName(tag), tag);
     }
 
diff --git a/runtime/vm/compiler/frontend/kernel_translation_helper.h b/runtime/vm/compiler/frontend/kernel_translation_helper.h
index ff94ef2..cb7dc87 100644
--- a/runtime/vm/compiler/frontend/kernel_translation_helper.h
+++ b/runtime/vm/compiler/frontend/kernel_translation_helper.h
@@ -156,17 +156,18 @@
 
   Type& GetCanonicalType(const Class& klass);
 
-  void ReportError(const char* format, ...);
+  void ReportError(const char* format, ...) PRINTF_ATTRIBUTE(2, 3);
   void ReportError(const Script& script,
                    const TokenPosition position,
                    const char* format,
-                   ...);
-  void ReportError(const Error& prev_error, const char* format, ...);
+                   ...) PRINTF_ATTRIBUTE(4, 5);
+  void ReportError(const Error& prev_error, const char* format, ...)
+      PRINTF_ATTRIBUTE(3, 4);
   void ReportError(const Error& prev_error,
                    const Script& script,
                    const TokenPosition position,
                    const char* format,
-                   ...);
+                   ...) PRINTF_ATTRIBUTE(5, 6);
 
  private:
   // This will mangle [name_to_modify] if necessary and make the result a symbol
diff --git a/runtime/vm/dwarf.cc b/runtime/vm/dwarf.cc
index 7ab10b9..ae71c84 100644
--- a/runtime/vm/dwarf.cc
+++ b/runtime/vm/dwarf.cc
@@ -439,10 +439,10 @@
   Print("Ltemp%" Pd " = .Lfunc%" Pd " - .Ldebug_info\n", temp, function_index);
   Print(".4byte Ltemp%" Pd "\n", temp);
   // DW_AT_low_pc
-  Print(FORM_ADDR " .Lcode%" Pd " + %" Pd "\n", root_code_index,
+  Print(FORM_ADDR " .Lcode%" Pd " + %d\n", root_code_index,
         node->start_pc_offset);
   // DW_AT_high_pc
-  Print(FORM_ADDR " .Lcode%" Pd " + %" Pd "\n", root_code_index,
+  Print(FORM_ADDR " .Lcode%" Pd " + %d\n", root_code_index,
         node->end_pc_offset);
   // DW_AT_call_file
   uleb128(file);
@@ -596,7 +596,7 @@
             u1(0);                  // This is an extended opcode
             u1(1 + sizeof(void*));  // that is 5 or 9 bytes long
             u1(DW_LNE_set_address);
-            Print(FORM_ADDR " .Lcode%" Pd " + %" Pd "\n", i, current_pc_offset);
+            Print(FORM_ADDR " .Lcode%" Pd " + %d\n", i, current_pc_offset);
           } else {
             u1(DW_LNS_advance_pc);
             Print(".uleb128 .Lcode%" Pd " - .Lcode%" Pd " + %" Pd "\n", i,
diff --git a/runtime/vm/dwarf.h b/runtime/vm/dwarf.h
index b523663..cd68542 100644
--- a/runtime/vm/dwarf.h
+++ b/runtime/vm/dwarf.h
@@ -180,12 +180,12 @@
     kInlinedFunction,
   };
 
-  void Print(const char* format, ...);
+  void Print(const char* format, ...) PRINTF_ATTRIBUTE(2, 3);
   void sleb128(intptr_t value) { Print(".sleb128 %" Pd "\n", value); }
   void uleb128(uintptr_t value) { Print(".uleb128 %" Pd "\n", value); }
-  void u1(uint8_t value) { Print(".byte %" Pd "\n", value); }
-  void u2(uint16_t value) { Print(".2byte %" Pd "\n", value); }
-  void u4(uint32_t value) { Print(".4byte %" Pd "\n", value); }
+  void u1(uint8_t value) { Print(".byte %d\n", value); }
+  void u2(uint16_t value) { Print(".2byte %d\n", value); }
+  void u4(uint32_t value) { Print(".4byte %d\n", value); }
 
   void WriteAbbreviations();
   void WriteCompilationUnit();
diff --git a/runtime/vm/json_stream.h b/runtime/vm/json_stream.h
index 42848bb..c44a5f6 100644
--- a/runtime/vm/json_stream.h
+++ b/runtime/vm/json_stream.h
@@ -83,7 +83,8 @@
              bool parameters_are_dart_objects = false);
   void SetupError();
 
-  void PrintError(intptr_t code, const char* details_format, ...);
+  void PrintError(intptr_t code, const char* details_format, ...)
+      PRINTF_ATTRIBUTE(3, 4);
 
   void PostReply();
 
diff --git a/runtime/vm/log.h b/runtime/vm/log.h
index c18d6f5..b644884 100644
--- a/runtime/vm/log.h
+++ b/runtime/vm/log.h
@@ -22,7 +22,7 @@
 
 #define THR_VPrint(format, args) Log::Current()->VPrint(format, args)
 
-typedef void (*LogPrinter)(const char* str, ...);
+typedef void (*LogPrinter)(const char* str, ...) PRINTF_ATTRIBUTE(1, 2);
 
 class Log {
  public:
diff --git a/runtime/vm/log_test.cc b/runtime/vm/log_test.cc
index 49ce2ea..6a926bb 100644
--- a/runtime/vm/log_test.cc
+++ b/runtime/vm/log_test.cc
@@ -17,6 +17,8 @@
 namespace dart {
 
 static const char* test_output_ = NULL;
+
+PRINTF_ATTRIBUTE(1, 2)
 static void TestPrinter(const char* format, ...) {
   // Measure.
   va_list args;
diff --git a/runtime/vm/service.cc b/runtime/vm/service.cc
index 717772c..4bd2ccd 100644
--- a/runtime/vm/service.cc
+++ b/runtime/vm/service.cc
@@ -2793,7 +2793,7 @@
   }
 
   if (compilation_result.status != Dart_KernelCompilationStatus_Ok) {
-    js->PrintError(kExpressionCompilationError, compilation_result.error);
+    js->PrintError(kExpressionCompilationError, "%s", compilation_result.error);
     free(compilation_result.error);
     return true;
   }
@@ -3714,7 +3714,7 @@
 
   const char* error = NULL;
   if (!isolate->debugger()->SetResumeAction(step, frame_index, &error)) {
-    js->PrintError(kCannotResume, error);
+    js->PrintError(kCannotResume, "%s", error);
     return true;
   }
   isolate->SetResumeRequest();
diff --git a/runtime/vm/timeline_analysis.h b/runtime/vm/timeline_analysis.h
index a470084..bb27436 100644
--- a/runtime/vm/timeline_analysis.h
+++ b/runtime/vm/timeline_analysis.h
@@ -77,7 +77,7 @@
   void DiscoverThreads();
   void FinalizeThreads();
 
-  void SetError(const char* format, ...);
+  void SetError(const char* format, ...) PRINTF_ATTRIBUTE(2, 3);
 
   Zone* zone_;
   Isolate* isolate_;