diff options
Diffstat (limited to 'compiler/codeGen/ClosureInfo.lhs')
| -rw-r--r-- | compiler/codeGen/ClosureInfo.lhs | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/compiler/codeGen/ClosureInfo.lhs b/compiler/codeGen/ClosureInfo.lhs index e6319898db..27aed3a70e 100644 --- a/compiler/codeGen/ClosureInfo.lhs +++ b/compiler/codeGen/ClosureInfo.lhs @@ -594,7 +594,13 @@ getCallMethod this_pkg name (LFThunk _ _ updatable std_form_info is_fun) n_args if we enter the same thunk multiple times, so the optimisation of jumping directly to the entry code is still valid. --SDM -} - = ASSERT2( n_args == 0, ppr name ) EnterIt + = EnterIt + -- We used to have ASSERT( n_args == 0 ), but actually it is + -- possible for the optimiser to generate + -- let bot :: Int = error Int "urk" + -- in (bot `cast` unsafeCoerce Int (Int -> Int)) 3 + -- This happens as a result of the case-of-error transformation + -- So the right thing to do is just to enter the thing | otherwise -- Jump direct to code for single-entry thunks = ASSERT( n_args == 0 ) |