From b87b335e6859ead3baa7fde20e3ea2ac69f63d85 Mon Sep 17 00:00:00 2001
From: Benjamin Coenen <5719034+bnjjj@users.noreply.github.com>
Date: Sat, 25 Apr 2020 15:48:04 +0200
Subject: add support for cfg feature attributes on expression #4063

Signed-off-by: Benjamin Coenen <5719034+bnjjj@users.noreply.github.com>
---
 crates/ra_hir_def/src/body/lower.rs | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'crates/ra_hir_def/src/body')

diff --git a/crates/ra_hir_def/src/body/lower.rs b/crates/ra_hir_def/src/body/lower.rs
index 0caedd8d8..571603854 100644
--- a/crates/ra_hir_def/src/body/lower.rs
+++ b/crates/ra_hir_def/src/body/lower.rs
@@ -141,6 +141,10 @@ impl ExprCollector<'_> {
 
     fn collect_expr(&mut self, expr: ast::Expr) -> ExprId {
         let syntax_ptr = AstPtr::new(&expr);
+        let attrs = self.expander.parse_attrs(&expr);
+        if !self.expander.is_cfg_enabled(&attrs) {
+            return self.missing_expr();
+        }
         match expr {
             ast::Expr::IfExpr(e) => {
                 let then_branch = self.collect_block_opt(e.then_branch());
-- 
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