--- old/src/hotspot/cpu/x86/macroAssembler_x86.cpp	2018-08-23 13:30:31.941846869 -0700
+++ new/src/hotspot/cpu/x86/macroAssembler_x86.cpp	2018-08-23 13:30:31.655847751 -0700
@@ -5745,6 +5745,7 @@
       case 1: rc = "round down"; break;
       case 2: rc = "round up  "; break;
       case 3: rc = "chop      "; break;
+      default: ShouldNotReachHere(); return;
     };
     // precision control
     const char* pc;
@@ -5753,6 +5754,7 @@
       case 1: pc = "reserved"; break;
       case 2: pc = "53 bits "; break;
       case 3: pc = "64 bits "; break;
+      default: ShouldNotReachHere(); return;
     };
     // flags
     char f[9];
--- old/src/hotspot/share/gc/shared/genCollectedHeap.cpp	2018-08-23 13:30:32.627844754 -0700
+++ new/src/hotspot/share/gc/shared/genCollectedHeap.cpp	2018-08-23 13:30:32.325845685 -0700
@@ -1147,7 +1147,7 @@
 static ScratchBlock *removeSmallestScratch(ScratchBlock **prev_ptr) {
   bool first = true;
   size_t min_size = 0;   // "first" makes this conceptually infinite.
-  ScratchBlock **smallest_ptr, *smallest;
+  ScratchBlock **smallest_ptr = NULL, *smallest =  NULL;
   ScratchBlock  *cur = *prev_ptr;
   while (cur) {
     assert(*prev_ptr == cur, "just checking");
--- old/src/java.desktop/share/native/libsplashscreen/splashscreen_png.c	2018-08-23 13:30:33.240842864 -0700
+++ new/src/java.desktop/share/native/libsplashscreen/splashscreen_png.c	2018-08-23 13:30:32.944843777 -0700
@@ -50,7 +50,7 @@
     png_uint_32 i, rowbytes;
     volatile png_bytepp row_pointers = NULL;
     volatile png_bytep image_data = NULL;
-    int success = 0;
+    volatile int success = 0;
     double gamma;
 
     png_structp png_ptr = NULL;