Allow offset of NULL to NtWriteFile.

41beb716 · Marcus Meissner · Alexandre Julliard · 17ffed02 · 41beb716
Commit 41beb716 authored Jan 09, 2004 by Marcus Meissner Committed by Alexandre Julliard Jan 09, 2004
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Showing with 6 additions and 2 deletions

file.c dlls/ntdll/file.c +6 -2

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--- a/dlls/ntdll/file.c
+++ b/dlls/ntdll/file.c
@@ -558,8 +558,12 @@ NTSTATUS WINAPI NtWriteFile(HANDLE hFile, HANDLE hEvent,
        ovp->async.event = hEvent;
        ovp->async.iosb = io_status;
        ovp->count = length;
-        ovp->offset = offset->s.LowPart;
-        if (offset->s.HighPart) FIXME("NIY-high part\n");
+        if (offset) {
+            ovp->offset = offset->s.LowPart;
+            if (offset->s.HighPart) FIXME("NIY-high part\n");
+        } else {
+            ovp->offset = 0;
+        }
        ovp->apc = apc;
        ovp->apc_user = apc_user;
        ovp->buffer = (void*)buffer;