diff options
Diffstat (limited to 'compiler/rustc_lint/src/context.rs')
| -rw-r--r-- | compiler/rustc_lint/src/context.rs | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/compiler/rustc_lint/src/context.rs b/compiler/rustc_lint/src/context.rs index cd4106ebf83..017ae943e91 100644 --- a/compiler/rustc_lint/src/context.rs +++ b/compiler/rustc_lint/src/context.rs @@ -6,6 +6,7 @@ use std::cell::Cell; use std::slice; +use rustc_ast::BindingMode; use rustc_data_structures::fx::FxIndexMap; use rustc_data_structures::sync; use rustc_data_structures::unord::UnordMap; @@ -14,6 +15,7 @@ use rustc_feature::Features; use rustc_hir::def::Res; use rustc_hir::def_id::{CrateNum, DefId}; use rustc_hir::definitions::{DefPathData, DisambiguatedDefPathData}; +use rustc_hir::{Pat, PatKind}; use rustc_middle::bug; use rustc_middle::middle::privacy::EffectiveVisibilities; use rustc_middle::ty::layout::{LayoutError, LayoutOfHelpers, TyAndLayout}; @@ -890,7 +892,12 @@ impl<'tcx> LateContext<'tcx> { } && let Some(init) = match parent_node { hir::Node::Expr(expr) => Some(expr), - hir::Node::LetStmt(hir::LetStmt { init, .. }) => *init, + hir::Node::LetStmt(hir::LetStmt { + init, + // Binding is immutable, init cannot be re-assigned + pat: Pat { kind: PatKind::Binding(BindingMode::NONE, ..), .. }, + .. + }) => *init, _ => None, } { @@ -935,7 +942,12 @@ impl<'tcx> LateContext<'tcx> { } && let Some(init) = match parent_node { hir::Node::Expr(expr) => Some(expr), - hir::Node::LetStmt(hir::LetStmt { init, .. }) => *init, + hir::Node::LetStmt(hir::LetStmt { + init, + // Binding is immutable, init cannot be re-assigned + pat: Pat { kind: PatKind::Binding(BindingMode::NONE, ..), .. }, + .. + }) => *init, hir::Node::Item(item) => match item.kind { hir::ItemKind::Const(.., body_id) | hir::ItemKind::Static(.., body_id) => { Some(self.tcx.hir_body(body_id).value) |