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Indexing is similar to method calls in having an arbitrary left-hand-side and then something on the right, which is the main part of the expression. Method calls already have a span for that right part, but indexing does not. This means that long method chains that use indexing have really bad spans, especially when the indexing panics and that span in coverted into a panic location. This does the same thing as method calls for the AST and HIR, storing an extra span which is then put into the `fn_span` field in THIR.
27 lines
907 B
Text
27 lines
907 B
Text
error[E0608]: cannot index into a value of type `({integer}, {integer}, {integer})`
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--> $DIR/issue-27842.rs:4:16
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LL | let _ = tup[0];
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| ^^^ help: to access tuple elements, use: `.0`
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error[E0608]: cannot index into a value of type `({integer}, {integer}, {integer})`
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--> $DIR/issue-27842.rs:9:16
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LL | let _ = tup[i];
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| ^-^
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| cannot access tuple elements at a variable index
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= help: to access tuple elements, use tuple indexing syntax (e.g., `tuple.0`)
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error[E0608]: cannot index into a value of type `({integer},)`
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--> $DIR/issue-27842.rs:14:16
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LL | let _ = tup[3];
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| ^^^
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= help: to access tuple elements, use tuple indexing syntax (e.g., `tuple.0`)
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error: aborting due to 3 previous errors
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For more information about this error, try `rustc --explain E0608`.
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