more buffer fixes (?)

[d2df-sdl.git] / src / engine / e_fixedbuffer.pas

diff --git a/src/engine/e_fixedbuffer.pas b/src/engine/e_fixedbuffer.pas
index 3b6dbf801b28d8208d13ce71236afde048b5bd3e..bc355b1c671884e888ed025927592aec10c88387 100644 (file)
--- a/src/engine/e_fixedbuffer.pas
+++ b/src/engine/e_fixedbuffer.pas
@@ -201,6 +201,8 @@ var
 begin
   if V = nil then Exit;
   N := V^.WritePos;
+  Assert(N <> 0, 'don''t write empty buffers you fuck');
+  if N = 0 then Exit;
 
   e_Buffer_Write(B, Word(N));