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Add a casting hack to make more tests pass.

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This commit is contained in:
Scott Olson 2016-06-12 21:36:02 -06:00
parent cf247239e3
commit f06610f34c
1 changed files with 9 additions and 2 deletions
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11
src/interpreter/mod.rs
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@ -1055,10 +1055,17 @@ impl<'a, 'tcx> EvalContext<'a, 'tcx> {
Misc => {
// FIXME(solson): Wrong for almost everything.
warn!("misc cast from {:?} to {:?}", src_ty, dest_ty);
let dest_size = self.type_size(dest_ty);
let src_size = self.type_size(src_ty);
if dest_size == src_size {
warn!("performing fishy cast from {:?} to {:?}", src_ty, dest_ty);
// Hack to support fat pointer -> thin pointer casts to keep tests for
// other things passing for now.
let is_fat_ptr_cast = pointee_type(src_ty).map(|ty| {
!self.type_is_sized(ty)
}).unwrap_or(false);
if dest_size == src_size || is_fat_ptr_cast {
self.memory.copy(src, dest, dest_size)?;
} else {
return Err(EvalError::Unimplemented(format!("can't handle cast: {:?}", rvalue)));