compiler/deSugar/DsForeign.lhs · e7bb988089e35d38f661c1527696bf72e18e20db · Alexander Kaznacheev / GHC

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13 years ago

dsCImport (CLabel): drop foralls when checking for FunPtr · 5cbd9a2f

Simon Marlow authored 13 years ago

We were mislabelling some foreign imports as IsData rather than
IsFunction, because the type was forall a. FunPtr (... a ...).

Eventually this gave rise to these obscure error when compiling
unregisterised:

libraries/base/Foreign/Marshal/Alloc.hc:473:0:
     warning: built-in function ‘free’ declared as non-function

libraries/base/Foreign/Marshal/Alloc.hc:1004:0:
     error: ‘free’ redeclared as different kind of symbol

5cbd9a2f

History

dsCImport (CLabel): drop foralls when checking for FunPtr

Simon Marlow authored 13 years ago

We were mislabelling some foreign imports as IsData rather than
IsFunction, because the type was forall a. FunPtr (... a ...).

Eventually this gave rise to these obscure error when compiling
unregisterised:

libraries/base/Foreign/Marshal/Alloc.hc:473:0:
     warning: built-in function ‘free’ declared as non-function

libraries/base/Foreign/Marshal/Alloc.hc:1004:0:
     error: ‘free’ redeclared as different kind of symbol

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