diff --git a/cfg/posix.cfg b/cfg/posix.cfg
index 9e15d696e..3083ac359 100644
--- a/cfg/posix.cfg
+++ b/cfg/posix.cfg
@@ -2545,6 +2545,31 @@ The function 'mktemp' is considered to be dangerous due to race conditions and s
       <not-uninit/>
     </arg>
   </function>
+  <!-- int fseeko(FILE *stream, off_t offset, int whence); -->
+  <function name="fseeko">
+    <noreturn>false</noreturn>
+    <leak-ignore/>
+    <arg nr="1">
+      <not-null/>
+      <not-uninit/>
+    </arg>
+    <arg nr="2">
+      <not-null/>
+    </arg>
+    <arg nr="3">
+      <not-null/>
+    </arg>
+  </function>
+  <!-- off_t ftello(FILE *stream); -->
+  <function name="ftello">
+    <use-retval/>
+    <noreturn>false</noreturn>
+    <leak-ignore/>
+    <arg nr="1">
+      <not-null/>
+      <not-uninit/>
+    </arg>
+  </function>
   <memory>
     <alloc init="true">strdup</alloc>
     <alloc init="true">strndup</alloc>
diff --git a/cfg/windows.cfg b/cfg/windows.cfg
index 63f8ce1e1..1ed523538 100644
--- a/cfg/windows.cfg
+++ b/cfg/windows.cfg
@@ -982,6 +982,11 @@
     <alloc init="true">HeapCreate</alloc>
     <dealloc>HeapDestroy</dealloc>
   </resource>
+  <resource>
+    <alloc init="true">_wfopen</alloc>
+    <alloc init="true">_tfopen</alloc>
+    <dealloc>fclose</dealloc>
+  </resource>
   <memory>
     <alloc>ExAllocatePool</alloc>
     <alloc>ExAllocatePoolWithQuota</alloc>
@@ -1890,17 +1895,17 @@ HFONT CreateFont(
     </arg>
   </function>
   <!-- int _stat(const char *path, struct _stat *buffer);
-         int _stat32(const char *path, struct __stat32 *buffer);
-         int _stat64(const char *path, struct __stat64 *buffer);
-		 int _stati64(const char *path, struct _stati64 *buffer);
-		 int _stat32i64(const char *path, struct _stat32i64 *buffer);
-		 int _stat64i32(const char *path, struct _stat64i32 *buffer);
-		 int _wstat(const wchar_t *path, struct _stat *buffer);
-         int _wstat32(const wchar_t *path, struct __stat32 *buffer);
-         int _wstat64(const wchar_t *path, struct __stat64 *buffer);
-         int _wstati64(const wchar_t *path, struct _stati64 *buffer);
-         int _wstat32i64(const wchar_t *path, struct _stat32i64 *buffer);
-         int _wstat64i32(const wchar_t *path, struct _stat64i32 *buffer); -->
+       int _stat32(const char *path, struct __stat32 *buffer);
+       int _stat64(const char *path, struct __stat64 *buffer);
+       int _stati64(const char *path, struct _stati64 *buffer);
+       int _stat32i64(const char *path, struct _stat32i64 *buffer);
+       int _stat64i32(const char *path, struct _stat64i32 *buffer);
+       int _wstat(const wchar_t *path, struct _stat *buffer);
+       int _wstat32(const wchar_t *path, struct __stat32 *buffer);
+       int _wstat64(const wchar_t *path, struct __stat64 *buffer);
+       int _wstati64(const wchar_t *path, struct _stati64 *buffer);
+       int _wstat32i64(const wchar_t *path, struct _stat32i64 *buffer);
+       int _wstat64i32(const wchar_t *path, struct _stat64i32 *buffer); -->
   <function name="_stat,_stat32,_stat64,_stati64,_stat32i64,_stat64i32,_wstat,_wstat32,_wstat64,_wstati64,_wstat32i64,_wstat64i32">
     <noreturn>false</noreturn>
     <leak-ignore/>
@@ -1912,4 +1917,42 @@ HFONT CreateFont(
       <not-null/>
     </arg>
   </function>
+  <!-- int _fseeki64(FILE *stream, __int64 offset, int origin); -->
+  <function name="_fseeki64">
+    <noreturn>false</noreturn>
+    <leak-ignore/>
+    <arg nr="1">
+      <not-null/>
+      <not-uninit/>
+    </arg>
+    <arg nr="2">
+      <not-uninit/>
+    </arg>
+    <arg nr="3">
+      <not-uninit/>
+    </arg>
+  </function>
+  <!-- __int64 _ftelli64(FILE *stream); -->
+  <function name="_ftelli64">
+    <noreturn>false</noreturn>
+    <leak-ignore/>
+    <arg nr="1">
+      <not-null/>
+      <not-uninit/>
+    </arg>
+  </function>
+  <!-- FILE *_wfopen(const wchar_t *filename, const wchar_t *mode); -->
+  <function name="_wfopen,_tfopen">
+    <use-retval/>
+    <noreturn>false</noreturn>
+    <arg nr="1">
+      <not-null/>
+      <not-uninit/>
+      <strz/>
+    </arg>
+    <arg nr="2">
+      <not-null/>
+      <not-uninit/>
+    </arg>
+  </function>
 </def>