[PATCH v2] ntdll: Cache LDR_IMAGE_IS_DLL for InitDLL

[Ilie Halip]

You could alternatively check if the IMAGE_FILE_DLL flag is set in the
NT header, maybe something like
this (not compiled, not tested):

--- a/dlls/ntdll/loader.c
+++ b/dlls/ntdll/loader.c
@@ -1309,7 +1309,14 @@ static NTSTATUS MODULE_InitDLL( WINE_MODREF
*wm, UINT reason, LPVOID lpReserved

     if (wm->ldr.Flags & LDR_DONT_RESOLVE_REFS) return STATUS_SUCCESS;
     if (wm->ldr.TlsIndex != -1) call_tls_callbacks(
wm->ldr.BaseAddress, reason );
-    if (!entry || !(wm->ldr.Flags & LDR_IMAGE_IS_DLL)) return STATUS_SUCCESS;
+    if (!entry) return STATUS_SUCCESS;
+    if (!(wm->ldr.Flags & LDR_IMAGE_IS_DLL))
+    {
+        if (RtlImageNtHeader(module)->FileHeader.Characteristics &
IMAGE_FILE_DLL)
+            TRACE("... warning: mismatch between flags ... continuing
anyway ...");
+        else
+            return STATUS_SUCCESS;
+    }

     if (TRACE_ON(relay))
     {

Not sure which one is the better approach, though.