9cdca18840
Account for macros when suggesting a new let binding Provide a structured suggestion when the expression comes from a macro expansion: ``` error[E0716]: temporary value dropped while borrowed --> $DIR/borrowck-let-suggestion.rs:2:17 | LL | let mut x = vec![1].iter(); | ^^^^^^^ - temporary value is freed at the end of this statement | | | creates a temporary value which is freed while still in use LL | LL | x.use_mut(); | - borrow later used here | = note: this error originates in the macro `vec` (in Nightly builds, run with -Z macro-backtrace for more info) help: consider using a `let` binding to create a longer lived value | LL ~ let binding = vec![1]; LL ~ let mut x = binding.iter(); | ``` |
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