From aa909a00cf5a0969e847f0950b66bb998d1b9aff Mon Sep 17 00:00:00 2001
From: Urgau <urgau@numericable.fr>
Date: Mon, 12 Oct 2026 19:15:26 +0200
Subject: [PATCH 1/3] Test the interaction between `--remap-path-prefix` and
 doctests

---
 .../remap-path-prefix-doctest-panic/rmake.rs  | 52 +++++++++++++++++++
 .../src/doctest.rs                            |  4 ++
 2 files changed, 56 insertions(+)
 create mode 100644 tests/run-make/remap-path-prefix-doctest-panic/rmake.rs
 create mode 100644 tests/run-make/remap-path-prefix-doctest-panic/src/doctest.rs

diff --git a/tests/run-make/remap-path-prefix-doctest-panic/rmake.rs b/tests/run-make/remap-path-prefix-doctest-panic/rmake.rs
new file mode 100644
index 0000000000000..b184eda0b37bb
--- /dev/null
+++ b/tests/run-make/remap-path-prefix-doctest-panic/rmake.rs
@@ -0,0 +1,52 @@
+// Checks that the location printed by a panicking doctest is remapped
+// according to `--remap-path-scope`.
+//
+// Only the lines between the start of the stack backtrace and the end are
+// are inspected, so timings, temp dirs and backtraces can't leak into the check.
+
+use run_make_support::assertion_helpers::{assert_contains, assert_not_contains};
+use run_make_support::rustdoc;
+
+/// Runs the failing doctest and returns stdout.
+fn panic_file(scope: Option<&str>) -> String {
+    let mut cmd = rustdoc();
+    cmd.input("src/doctest.rs")
+        .arg("--test")
+        .arg("--remap-path-prefix=src=/REMAPPED")
+        .arg("-Cdebuginfo=1")
+        .arg("--edition=2015")
+        .env("RUST_BACKTRACE", "1");
+
+    if let Some(scope) = scope {
+        cmd.arg(format!("--remap-path-scope={scope}")).arg("-Zunstable-options");
+    }
+
+    let out = cmd.run_fail();
+    out.assert_stdout_contains("explicit panic");
+
+    let stdout = out.stdout_utf8();
+    let section: Vec<&str> = stdout
+        .lines()
+        .skip_while(|l| l.trim() != "stack backtrace:")
+        .skip(1)
+        .take_while(|l| l.trim() != "failures:")
+        .collect();
+
+    assert!(!section.is_empty(), "no backtrace found in output:\n{stdout}");
+    section.join("\n")
+}
+
+fn main() {
+    // Check that with debuginfo (and related) we get the remapped path
+    for scope in [Some("debuginfo"), Some("object"), Some("all"), None] {
+        let stdout = panic_file(scope);
+        assert_contains(&stdout, "/REMAPPED/doctest.rs");
+        assert_not_contains(&stdout, "src/doctest.rs");
+    }
+
+    for scope in ["diagnostics", "documentation", "macro"] {
+        let stdout = panic_file(Some(scope));
+        assert_contains(&stdout, "src/doctest.rs");
+        assert_not_contains(&stdout, "/REMAPPED/doctest.rs");
+    }
+}
diff --git a/tests/run-make/remap-path-prefix-doctest-panic/src/doctest.rs b/tests/run-make/remap-path-prefix-doctest-panic/src/doctest.rs
new file mode 100644
index 0000000000000..2160cc21f6b42
--- /dev/null
+++ b/tests/run-make/remap-path-prefix-doctest-panic/src/doctest.rs
@@ -0,0 +1,4 @@
+/// ```
+/// panic!()
+/// ```
+pub fn f() {}

From 52d575da57529c244a472ff022cbd8a06e5a404a Mon Sep 17 00:00:00 2001
From: Urgau <urgau@numericable.fr>
Date: Tue, 13 Oct 2026 21:57:52 +0200
Subject: [PATCH 2/3] Ignore cross-compile as doctests don't always work when
 cross-compiled

---
 tests/run-make/remap-path-prefix-doctest-panic/rmake.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tests/run-make/remap-path-prefix-doctest-panic/rmake.rs b/tests/run-make/remap-path-prefix-doctest-panic/rmake.rs
index b184eda0b37bb..383955a270ab3 100644
--- a/tests/run-make/remap-path-prefix-doctest-panic/rmake.rs
+++ b/tests/run-make/remap-path-prefix-doctest-panic/rmake.rs
@@ -4,6 +4,8 @@
 // Only the lines between the start of the stack backtrace and the end are
 // are inspected, so timings, temp dirs and backtraces can't leak into the check.
 
+//@ ignore-cross-compile
+
 use run_make_support::assertion_helpers::{assert_contains, assert_not_contains};
 use run_make_support::rustdoc;
 

From ae4e708a534a4502ed517c32814b9722573812f9 Mon Sep 17 00:00:00 2001
From: Urgau <urgau@numericable.fr>
Date: Thu, 15 Oct 2026 18:46:13 +0200
Subject: [PATCH 3/3] Also ignore Windows and mingw due to path handling
 differences

---
 tests/run-make/remap-path-prefix-doctest-panic/rmake.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tests/run-make/remap-path-prefix-doctest-panic/rmake.rs b/tests/run-make/remap-path-prefix-doctest-panic/rmake.rs
index 383955a270ab3..058f62e980fef 100644
--- a/tests/run-make/remap-path-prefix-doctest-panic/rmake.rs
+++ b/tests/run-make/remap-path-prefix-doctest-panic/rmake.rs
@@ -5,6 +5,7 @@
 // are inspected, so timings, temp dirs and backtraces can't leak into the check.
 
 //@ ignore-cross-compile
+//@ ignore-windows
 
 use run_make_support::assertion_helpers::{assert_contains, assert_not_contains};
 use run_make_support::rustdoc;