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From 5e37ea7cb9d99d91f2c5ac6edf19ff777f95bb88 Mon Sep 17 00:00:00 2001
From: Arlo Siemsen <arsiem@microsoft.com>
Date: Thu, 4 Jan 2024 11:40:56 -0600
Subject: [PATCH] Handle vendored sources when remapping paths

Upstream-Status: Submitted [https://github.com/rust-lang/rust/pull/119582]
Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>
---
 src/bootstrap/src/core/builder.rs | 19 ++++++++++++-------
 1 file changed, 12 insertions(+), 7 deletions(-)

diff --git a/src/bootstrap/src/core/builder.rs b/src/bootstrap/src/core/builder.rs
index cd276674dee6..48fdb2c7f7b7 100644
--- a/src/bootstrap/src/core/builder.rs
+++ b/src/bootstrap/src/core/builder.rs
@@ -1789,15 +1789,20 @@ pub fn cargo(
         }
 
         if self.config.rust_remap_debuginfo {
-            // FIXME: handle vendored sources
-            let registry_src = t!(home::cargo_home()).join("registry").join("src");
             let mut env_var = OsString::new();
-            for entry in t!(std::fs::read_dir(registry_src)) {
-                if !env_var.is_empty() {
-                    env_var.push("\t");
-                }
-                env_var.push(t!(entry).path());
+            if self.config.vendor {
+                let vendor = self.build.src.join("vendor");
+                env_var.push(vendor);
                 env_var.push("=/rust/deps");
+            } else {
+                let registry_src = t!(home::cargo_home()).join("registry").join("src");
+                for entry in t!(std::fs::read_dir(registry_src)) {
+                    if !env_var.is_empty() {
+                        env_var.push("\t");
+                    }
+                    env_var.push(t!(entry).path());
+                    env_var.push("=/rust/deps");
+                }
             }
             cargo.env("RUSTC_CARGO_REGISTRY_SRC_TO_REMAP", env_var);
         }
-- 
2.39.0