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Add a comment explaining the static "local" during deallocate_local

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This commit is contained in:
Oliver Schneider 2017-07-14 17:46:28 +02:00
parent 2e562a4d64
commit 45ab975610
1 changed files with 4 additions and 1 deletions
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5
src/eval_context.rs
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@ -414,7 +414,10 @@ impl<'a, 'tcx> EvalContext<'a, 'tcx> {
let ptr = ptr.to_ptr()?;
self.memory.dump_alloc(ptr.alloc_id);
match self.memory.get(ptr.alloc_id)?.kind {
::memory::Kind::Static | ::memory::Kind::UninitializedStatic => {},
// for a constant like `const FOO: &i32 = &1;` the local containing
// the `1` is referred to by the global. We transitively marked everything
// the global refers to as static itself, so we don't free it here
::memory::Kind::Static => {}
::memory::Kind::Stack => self.memory.deallocate(ptr, None, ::memory::Kind::Stack)?,
other => bug!("local contained non-stack memory: {:?}", other),
}