NtReadFile checks that offset is not null.

b40a287e · Carlos Lozano · Alexandre Julliard · 56c449b9 · b40a287e
Commit b40a287e authored Nov 11, 2003 by Carlos Lozano Committed by Alexandre Julliard Nov 11, 2003
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Showing with 7 additions and 2 deletions

file.c dlls/ntdll/file.c +7 -2

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--- a/dlls/ntdll/file.c
+++ b/dlls/ntdll/file.c
@@ -383,8 +383,13 @@ NTSTATUS WINAPI NtReadFile(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 == NULL ) 
+            ovp->offset = 0;
+        else
+        {
+            ovp->offset = offset->s.LowPart;
+            if (offset->s.HighPart) FIXME("NIY-high part\n");
+        } 
        ovp->apc = apc;
        ovp->apc_user = apc_user;
        ovp->buffer = buffer;