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copilot-c99: Add volatile qualifier to external stream variable #259

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copilot-c99: Add volatile qualifier to external stream variable #259

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2 changes: 1 addition & 1 deletion copilot-c99/src/Copilot/Compile/C99/CodeGen.hs
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Original file line number Diff line number Diff line change
Expand Up @@ -31,7 +31,7 @@ genfun name expr ty = C.FunDef cty name [] cvars [C.Return $ Just cexpr] where
mkextdecln :: External -> C.Decln
mkextdecln (External name _ ty) = decln where
decln = C.VarDecln (Just C.Extern) cty name Nothing
cty = transtype ty
cty = C.Volatile (transtype ty)

-- | Make a declaration for a copy of an external variable.
mkextcpydecln :: External -> C.Decln
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