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Fix #2705

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The `-` turned into a `+` during a refactoring.

The original issue was caused by `Read` resolving wrongly to a trait without
type parameters instead of a struct with one parameter; this only fixes the
crash, not the wrong resolution.
This commit is contained in:
Florian Diebold 2020-01-03 14:57:11 +01:00
parent 15d94cbffc
commit 67240c8d91
2 changed files with 18 additions and 1 deletions
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2
crates/ra_hir_ty/src/lower.rs
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@ -331,7 +331,7 @@ pub(super) fn substs_from_path_segment(
if let Some(generic_args) = &segment.args_and_bindings {
// if args are provided, it should be all of them, but we can't rely on that
let self_param_correction = if add_self_param { 1 } else { 0 };
let child_len = child_len + self_param_correction;
let child_len = child_len - self_param_correction;
for arg in generic_args.args.iter().take(child_len) {
match arg {
GenericArg::Type(type_ref) => {