diff --git a/make/autoconf/flags-cflags.m4 b/make/autoconf/flags-cflags.m4
index 9b022792e15..7cad3701987 100644
--- a/make/autoconf/flags-cflags.m4
+++ b/make/autoconf/flags-cflags.m4
@@ -625,7 +625,7 @@ AC_DEFUN([FLAGS_SETUP_CFLAGS_HELPER],
     TOOLCHAIN_CFLAGS_JVM="-qtbtable=full -qtune=balanced -fno-exceptions \
         -qalias=noansi -qstrict -qtls=default -qnortti -qnoeh -qignerrno -qstackprotect"
   elif test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
-    TOOLCHAIN_CFLAGS_JVM="-nologo -MD -Zc:preprocessor -Zc:strictStrings -MP"
+    TOOLCHAIN_CFLAGS_JVM="-nologo -MD -Zc:preprocessor -Zc:strictStrings -permissive- -MP"
     TOOLCHAIN_CFLAGS_JDK="-nologo -MD -Zc:preprocessor -Zc:strictStrings -Zc:wchar_t-"
   fi
 
diff --git a/src/hotspot/os/windows/os_windows.cpp b/src/hotspot/os/windows/os_windows.cpp
index 7c3cf9be093..2107b8365d0 100644
--- a/src/hotspot/os/windows/os_windows.cpp
+++ b/src/hotspot/os/windows/os_windows.cpp
@@ -2284,7 +2284,7 @@ void* os::win32::install_signal_handler(int sig, signal_handler_t handler) {
     sigbreakHandler = handler;
     return oldHandler;
   } else {
-    return ::signal(sig, handler);
+    return CAST_FROM_FN_PTR(void*, ::signal(sig, handler));
   }
 }
 
@@ -2935,22 +2935,23 @@ LONG WINAPI topLevelVectoredExceptionFilter(struct _EXCEPTION_POINTERS* exceptio
 
 #if defined(USE_VECTORED_EXCEPTION_HANDLING)
 LONG WINAPI topLevelUnhandledExceptionFilter(struct _EXCEPTION_POINTERS* exceptionInfo) {
-  if (InterceptOSException) goto exit;
-  DWORD exception_code = exceptionInfo->ExceptionRecord->ExceptionCode;
+  if (!InterceptOSException) {
+    DWORD exceptionCode = exceptionInfo->ExceptionRecord->ExceptionCode;
 #if defined(_M_ARM64)
-  address pc = (address)exceptionInfo->ContextRecord->Pc;
+    address pc = (address) exceptionInfo->ContextRecord->Pc;
 #elif defined(_M_AMD64)
-  address pc = (address) exceptionInfo->ContextRecord->Rip;
+    address pc = (address) exceptionInfo->ContextRecord->Rip;
 #else
-  address pc = (address) exceptionInfo->ContextRecord->Eip;
+    address pc = (address) exceptionInfo->ContextRecord->Eip;
 #endif
-  Thread* t = Thread::current_or_null_safe();
+    Thread* thread = Thread::current_or_null_safe();
 
-  if (exception_code != EXCEPTION_BREAKPOINT) {
-    report_error(t, exception_code, pc, exceptionInfo->ExceptionRecord,
-                exceptionInfo->ContextRecord);
+    if (exceptionCode != EXCEPTION_BREAKPOINT) {
+      report_error(thread, exceptionCode, pc, exceptionInfo->ExceptionRecord,
+                  exceptionInfo->ContextRecord);
+    }
   }
-exit:
+
   return previousUnhandledExceptionFilter ? previousUnhandledExceptionFilter(exceptionInfo) : EXCEPTION_CONTINUE_SEARCH;
 }
 #endif
diff --git a/src/hotspot/os/windows/symbolengine.cpp b/src/hotspot/os/windows/symbolengine.cpp
index f178c3648b4..40c11b9e54d 100644
--- a/src/hotspot/os/windows/symbolengine.cpp
+++ b/src/hotspot/os/windows/symbolengine.cpp
@@ -111,7 +111,7 @@ class SimpleBufferWithFallback {
       _p = _fallback_buffer;
       _capacity = (int)(sizeof(_fallback_buffer) / sizeof(T));
     }
-    _p[0] = '\0';
+    _p[0] = 0;
     imprint_sentinel();
   }
 
@@ -123,7 +123,7 @@ class SimpleBufferWithFallback {
     }
     _p = _fallback_buffer;
     _capacity = (int)(sizeof(_fallback_buffer) / sizeof(T));
-    _p[0] = '\0';
+    _p[0] = 0;
     imprint_sentinel();
   }
 
diff --git a/src/hotspot/share/memory/allocation.cpp b/src/hotspot/share/memory/allocation.cpp
index 64b00a13694..120d0df5358 100644
--- a/src/hotspot/share/memory/allocation.cpp
+++ b/src/hotspot/share/memory/allocation.cpp
@@ -111,7 +111,7 @@ void* ArenaObj::operator new(size_t size, Arena *arena) throw() {
 // AnyObj
 //
 
-void* AnyObj::operator new(size_t size, Arena *arena) throw() {
+void* AnyObj::operator new(size_t size, Arena *arena) {
   address res = (address)arena->Amalloc(size);
   DEBUG_ONLY(set_allocation_type(res, ARENA);)
   return res;