diff options
Diffstat (limited to 'src/runtime/haskell-bind')
| -rw-r--r-- | src/runtime/haskell-bind/PGF2.hsc | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/runtime/haskell-bind/PGF2.hsc b/src/runtime/haskell-bind/PGF2.hsc index 6435813ee..e7b13fbc1 100644 --- a/src/runtime/haskell-bind/PGF2.hsc +++ b/src/runtime/haskell-bind/PGF2.hsc @@ -149,7 +149,9 @@ functionType p fn = withGuPool $ \tmpPl -> do c_fn <- newUtf8CString fn tmpPl c_type <- pgf_function_type (pgf p) c_fn - peekType c_type + if c_type == nullPtr + then throwIO (PGFError ("Function '"++fn++"' is not defined")) + else peekType c_type where peekType c_type = do cid <- (#peek PgfType, cid) c_type >>= peekUtf8CString |