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Add better proof

This commit is contained in:
Sergey Pepyakin 2019-04-18 17:29:42 +02:00
parent 28456e1163
commit fb6638c163
1 changed files with 6 additions and 2 deletions
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8
src/prepare/compile.rs
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@ -148,10 +148,14 @@ impl Compiler {
"label_stack should reflect the frame stack; "label_stack should reflect the frame stack;
frame stack is never empty while being processed; qed", frame stack is never empty while being processed; qed",
); );
let (if_not, end_label) = match top_label { let (if_not, end_label) = match top_label {
BlockFrameType::IfTrue { if_not, end_label } => (if_not, end_label), BlockFrameType::IfTrue { if_not, end_label } => (if_not, end_label),
_ => panic!("validation ensures that the top frame is actually if_true"), _ => unreachable!(
"validation ensures that the top frame was opened by If block;
`top_label` should be `IfTrue` at this point;
this statement is unreachable;
qed"
),
}; };
// First, we need to finish if-true block: add a jump from the end of the if-true block // First, we need to finish if-true block: add a jump from the end of the if-true block