diff --git a/cfg/windows.cfg b/cfg/windows.cfg
index 105ee469b..53dc335e4 100644
--- a/cfg/windows.cfg
+++ b/cfg/windows.cfg
@@ -2176,7 +2176,7 @@
     <noreturn>false</noreturn>
     <returnValue type="HRESULT"/>
     <leak-ignore/>
-    <arg nr="1" direction="in">
+    <arg nr="1">
       <not-uninit/>
     </arg>
     <arg nr="2" direction="in">
@@ -3432,7 +3432,7 @@ HFONT CreateFont(
     <arg nr="9" direction="in">
       <not-uninit/>
     </arg>
-    <arg nr="10" direction="in">
+    <arg nr="10">
       <not-uninit/>
     </arg>
     <arg nr="11" direction="in">
@@ -3487,7 +3487,7 @@ HFONT CreateFont(
     <arg nr="10" direction="in">
       <not-uninit/>
     </arg>
-    <arg nr="11" direction="in">
+    <arg nr="11">
       <not-uninit/>
     </arg>
     <arg nr="12" direction="in">
@@ -3501,7 +3501,7 @@ HFONT CreateFont(
     <noreturn>false</noreturn>
     <returnValue type="BOOL"/>
     <leak-ignore/>
-    <arg nr="1" direction="in">
+    <arg nr="1">
       <not-null/>
       <not-uninit/>
     </arg>
@@ -4726,7 +4726,7 @@ HFONT CreateFont(
     <returnValue type="HMODULE"/>
     <use-retval/>
     <leak-ignore/>
-    <arg nr="1" direction="in">
+    <arg nr="1">
       <not-uninit/>
       <strz/>
     </arg>
@@ -4806,7 +4806,7 @@ HFONT CreateFont(
   <function name="FreeLibraryAndExitThread">
     <noreturn>true</noreturn>
     <returnValue type="VOID"/>
-    <arg nr="1" direction="in">
+    <arg nr="1">
       <not-uninit/>
       <not-bool/>
     </arg>
@@ -4821,7 +4821,7 @@ HFONT CreateFont(
     <noreturn>false</noreturn>
     <leak-ignore/>
     <returnValue type="DWORD"/>
-    <arg nr="1" direction="in">
+    <arg nr="1">
       <not-uninit/>
       <not-bool/>
     </arg>
@@ -5646,7 +5646,7 @@ HFONT CreateFont(
     <returnValue type="int"/>
     <leak-ignore/>
     <!-- The function does nothing (useful) if arg1 is nullptr or arg2 is nullptr or arg3 is 0 -->
-    <arg nr="1" direction="in">
+    <arg nr="1">
       <not-null/>
     </arg>
     <arg nr="2" direction="out">
@@ -6791,7 +6791,7 @@ HFONT CreateFont(
     <returnValue type="HWND"/>
     <use-retval/>
     <leak-ignore/>
-    <arg nr="1" direction="in">
+    <arg nr="1">
       <not-uninit/>
     </arg>
     <arg nr="2" direction="in">
diff --git a/test/testother.cpp b/test/testother.cpp
index 1d351ec34..3e072aed4 100644
--- a/test/testother.cpp
+++ b/test/testother.cpp
@@ -11291,6 +11291,12 @@ private:
               "}");
         ASSERT_EQUALS("", errout.str());
 
+        check("_Bool a[10];\n" // #10350
+              "void foo() {\n"
+              "    memcpy(&a[5], &a[4], 2u * sizeof(a[0]));\n"
+              "}");
+        ASSERT_EQUALS("[test.cpp:3]: (error) Overlapping read/write in memcpy() is undefined behavior\n", errout.str());
+
         // wmemcpy
         check("void foo() {\n"
               "    wchar_t a[10];\n"