Make sure we consume a generic arg when checking mistyped turbofish #124930
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Rollup of 5 pull requests Successful merges: - rust-lang#124233 (Add `-lmingwex` second time in `mingw_libs`) - rust-lang#124318 (ignore generics args in attribute paths) - rust-lang#124899 (bootstrap: add comments for the automatic dry run) - rust-lang#124904 (reachable computation: extend explanation of what this does, and why) - rust-lang#124930 (Make sure we consume a generic arg when checking mistyped turbofish) r? `@ghost` `@rustbot` modify labels: rollup
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Rollup merge of rust-lang#124930 - compiler-errors:consume-arg, r=petrochenkov Make sure we consume a generic arg when checking mistyped turbofish When recovering un-turbofish-ed args in expr position (e.g. `let x = a<T, U>();` in `check_mistyped_turbofish_with_multiple_type_params`, we used `parse_seq_to_before_end` to parse the fake generic args; however, it used `parse_generic_arg` which *optionally* parses a generic arg. If it doesn't end up parsing an arg, it returns `Ok(None)` and consumes no tokens. If we don't find a delimiter after this (`,`), we try parsing *another* element. In this case, we just infinitely loop looking for a subsequent element. We can fix this by making sure that we either parse a generic arg or error in `parse_seq_to_before_end`'s callback. Fixes rust-lang#124897
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When recovering un-turbofish-ed args in expr position (e.g.
let x = a<T, U>();incheck_mistyped_turbofish_with_multiple_type_params, we usedparse_seq_to_before_endto parse the fake generic args; however, it usedparse_generic_argwhich optionally parses a generic arg. If it doesn't end up parsing an arg, it returnsOk(None)and consumes no tokens. If we don't find a delimiter after this (,), we try parsing another element. In this case, we just infinitely loop looking for a subsequent element.We can fix this by making sure that we either parse a generic arg or error in
parse_seq_to_before_end's callback.Fixes #124897