--- a/hotspot/src/os/bsd/vm/perfMemory_bsd.cpp	Fri Apr 05 16:16:18 2013 -0700
+++ b/hotspot/src/os/bsd/vm/perfMemory_bsd.cpp	Fri Apr 05 23:10:04 2013 -0700
@@ -672,15 +672,15 @@
   RESTARTABLE(::open(filename, oflags), result);
   if (result == OS_ERR) {
     if (errno == ENOENT) {
-      THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
-                  "Process not found");
+      THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
+                  "Process not found", OS_ERR);
     }
     else if (errno == EACCES) {
-      THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
-                  "Permission denied");
+      THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
+                  "Permission denied", OS_ERR);
     }
     else {
-      THROW_MSG_0(vmSymbols::java_io_IOException(), strerror(errno));
+      THROW_MSG_(vmSymbols::java_io_IOException(), strerror(errno), OS_ERR);
     }
   }
 
@@ -828,7 +828,7 @@
   char* mapAddress;
   int result;
   int fd;
-  size_t size;
+  size_t size = 0;
   const char* luser = NULL;
 
   int mmap_prot;
@@ -899,9 +899,12 @@
 
   if (*sizep == 0) {
     size = sharedmem_filesize(fd, CHECK);
-    assert(size != 0, "unexpected size");
+  } else {
+    size = *sizep;
   }
 
+  assert(size > 0, "unexpected size <= 0");
+
   mapAddress = (char*)::mmap((char*)0, size, mmap_prot, MAP_SHARED, fd, 0);
 
   // attempt to close the file - restart if it gets interrupted,

--- a/hotspot/src/os/linux/vm/perfMemory_linux.cpp	Fri Apr 05 16:16:18 2013 -0700
+++ b/hotspot/src/os/linux/vm/perfMemory_linux.cpp	Fri Apr 05 23:10:04 2013 -0700
@@ -672,15 +672,15 @@
   RESTARTABLE(::open(filename, oflags), result);
   if (result == OS_ERR) {
     if (errno == ENOENT) {
-      THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
-                  "Process not found");
+      THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
+                  "Process not found", OS_ERR);
     }
     else if (errno == EACCES) {
-      THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
-                  "Permission denied");
+      THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
+                  "Permission denied", OS_ERR);
     }
     else {
-      THROW_MSG_0(vmSymbols::java_io_IOException(), strerror(errno));
+      THROW_MSG_(vmSymbols::java_io_IOException(), strerror(errno), OS_ERR);
     }
   }
 
@@ -828,7 +828,7 @@
   char* mapAddress;
   int result;
   int fd;
-  size_t size;
+  size_t size = 0;
   const char* luser = NULL;
 
   int mmap_prot;
@@ -899,9 +899,12 @@
 
   if (*sizep == 0) {
     size = sharedmem_filesize(fd, CHECK);
-    assert(size != 0, "unexpected size");
+  } else {
+    size = *sizep;
   }
 
+  assert(size > 0, "unexpected size <= 0");
+
   mapAddress = (char*)::mmap((char*)0, size, mmap_prot, MAP_SHARED, fd, 0);
 
   // attempt to close the file - restart if it gets interrupted,

--- a/hotspot/src/os/solaris/vm/perfMemory_solaris.cpp	Fri Apr 05 16:16:18 2013 -0700
+++ b/hotspot/src/os/solaris/vm/perfMemory_solaris.cpp	Fri Apr 05 23:10:04 2013 -0700
@@ -687,15 +687,15 @@
   RESTARTABLE(::open(filename, oflags), result);
   if (result == OS_ERR) {
     if (errno == ENOENT) {
-      THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
-                  "Process not found");
+      THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
+                  "Process not found", OS_ERR);
     }
     else if (errno == EACCES) {
-      THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
-                  "Permission denied");
+      THROW_MSG_(vmSymbols::java_lang_IllegalArgumentException(),
+                  "Permission denied", OS_ERR);
     }
     else {
-      THROW_MSG_0(vmSymbols::java_io_IOException(), strerror(errno));
+      THROW_MSG_(vmSymbols::java_io_IOException(), strerror(errno), OS_ERR);
     }
   }
 
@@ -843,7 +843,7 @@
   char* mapAddress;
   int result;
   int fd;
-  size_t size;
+  size_t size = 0;
   const char* luser = NULL;
 
   int mmap_prot;
@@ -914,9 +914,12 @@
 
   if (*sizep == 0) {
     size = sharedmem_filesize(fd, CHECK);
-    assert(size != 0, "unexpected size");
+  } else {
+    size = *sizep;
   }
 
+  assert(size > 0, "unexpected size <= 0");
+
   mapAddress = (char*)::mmap((char*)0, size, mmap_prot, MAP_SHARED, fd, 0);
 
   // attempt to close the file - restart if it gets interrupted,

--- a/hotspot/src/os/windows/vm/perfMemory_windows.cpp	Fri Apr 05 16:16:18 2013 -0700
+++ b/hotspot/src/os/windows/vm/perfMemory_windows.cpp	Fri Apr 05 23:10:04 2013 -0700
@@ -1581,7 +1581,7 @@
   ResourceMark rm;
 
   void *mapAddress = 0;
-  size_t size;
+  size_t size = 0;
   HANDLE fmh;
   DWORD ofm_access;
   DWORD mv_access;
@@ -1652,9 +1652,12 @@
 
   if (*sizep == 0) {
     size = sharedmem_filesize(rfilename, CHECK);
-    assert(size != 0, "unexpected size");
+  } else {
+    size = *sizep;
   }
 
+  assert(size > 0, "unexpected size <= 0");
+
   // Open the file mapping object with the given name
   fmh = open_sharedmem_object(robjectname, ofm_access, CHECK);