diff --git a/Cargo.lock b/Cargo.lock
index e5025a1ba4f9c..c8d2655972830 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -111,9 +111,9 @@ dependencies = [
 
 [[package]]
 name = "anstream"
-version = "0.6.17"
+version = "0.6.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "23a1e53f0f5d86382dafe1cf314783b2044280f406e7e1506368220ad11b1338"
+checksum = "8acc5369981196006228e28809f761875c0327210a891e941f4c683b3a99529b"
 dependencies = [
  "anstyle",
  "anstyle-parse",
diff --git a/compiler/rustc_lint_defs/src/builtin.rs b/compiler/rustc_lint_defs/src/builtin.rs
index efdb4b077e96f..313a7badf191d 100644
--- a/compiler/rustc_lint_defs/src/builtin.rs
+++ b/compiler/rustc_lint_defs/src/builtin.rs
@@ -3185,6 +3185,7 @@ declare_lint! {
     pub UNEXPECTED_CFGS,
     Warn,
     "detects unexpected names and values in `#[cfg]` conditions",
+    report_in_external_macro
 }
 
 declare_lint! {
diff --git a/library/stdarch b/library/stdarch
index ff9a4445038ea..e5e00aab0a8c8 160000
--- a/library/stdarch
+++ b/library/stdarch
@@ -1 +1 @@
-Subproject commit ff9a4445038eae46fd095188740946808581bc0e
+Subproject commit e5e00aab0a8c8fa35fb7865e88fa82366f615c53
diff --git a/src/tools/miri/miri-script/Cargo.lock b/src/tools/miri/miri-script/Cargo.lock
index 8dad30df6d1e6..0c0fe477cddc7 100644
--- a/src/tools/miri/miri-script/Cargo.lock
+++ b/src/tools/miri/miri-script/Cargo.lock
@@ -1,6 +1,6 @@
 # This file is automatically @generated by Cargo.
 # It is not intended for manual editing.
-version = 3
+version = 4
 
 [[package]]
 name = "anyhow"
@@ -521,15 +521,15 @@ checksum = "d135d17ab770252ad95e9a872d365cf3090e3be864a34ab46f48555993efc904"
 
 [[package]]
 name = "xshell"
-version = "0.2.6"
+version = "0.2.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6db0ab86eae739efd1b054a8d3d16041914030ac4e01cd1dca0cf252fd8b6437"
+checksum = "9e7290c623014758632efe00737145b6867b66292c42167f2ec381eb566a373d"
 dependencies = [
  "xshell-macros",
 ]
 
 [[package]]
 name = "xshell-macros"
-version = "0.2.6"
+version = "0.2.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9d422e8e38ec76e2f06ee439ccc765e9c6a9638b9e7c9f2e8255e4d41e8bd852"
+checksum = "32ac00cd3f8ec9c1d33fb3e7958a82df6989c42d747bd326c822b1d625283547"
diff --git a/tests/ui/check-cfg/auxiliary/cfg_macro.rs b/tests/ui/check-cfg/auxiliary/cfg_macro.rs
new file mode 100644
index 0000000000000..d68accd9202f7
--- /dev/null
+++ b/tests/ui/check-cfg/auxiliary/cfg_macro.rs
@@ -0,0 +1,11 @@
+// Inspired by https://github.com/rust-lang/cargo/issues/14775
+
+pub fn my_lib_func() {}
+
+#[macro_export]
+macro_rules! my_lib_macro {
+    () => {
+        #[cfg(my_lib_cfg)]
+        $crate::my_lib_func()
+    };
+}
diff --git a/tests/ui/check-cfg/report-in-external-macros.rs b/tests/ui/check-cfg/report-in-external-macros.rs
new file mode 100644
index 0000000000000..56550b04af305
--- /dev/null
+++ b/tests/ui/check-cfg/report-in-external-macros.rs
@@ -0,0 +1,12 @@
+// This test checks that we emit the `unexpected_cfgs` lint even in code
+// coming from an external macro.
+
+//@ check-pass
+//@ no-auto-check-cfg
+//@ aux-crate: cfg_macro=cfg_macro.rs
+//@ compile-flags: --check-cfg=cfg()
+
+fn main() {
+    cfg_macro::my_lib_macro!();
+    //~^ WARNING unexpected `cfg` condition name
+}
diff --git a/tests/ui/check-cfg/report-in-external-macros.stderr b/tests/ui/check-cfg/report-in-external-macros.stderr
new file mode 100644
index 0000000000000..11300a4e40272
--- /dev/null
+++ b/tests/ui/check-cfg/report-in-external-macros.stderr
@@ -0,0 +1,14 @@
+warning: unexpected `cfg` condition name: `my_lib_cfg`
+  --> $DIR/report-in-external-macros.rs:10:5
+   |
+LL |     cfg_macro::my_lib_macro!();
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = help: expected names are: `clippy`, `debug_assertions`, `doc`, `doctest`, `fmt_debug`, `miri`, `overflow_checks`, `panic`, `proc_macro`, `relocation_model`, `rustfmt`, `sanitize`, `sanitizer_cfi_generalize_pointers`, `sanitizer_cfi_normalize_integers`, `target_abi`, `target_arch`, `target_endian`, `target_env`, `target_family`, `target_feature`, `target_has_atomic`, `target_has_atomic_equal_alignment`, `target_has_atomic_load_store`, `target_os`, `target_pointer_width`, `target_thread_local`, `target_vendor`, `test`, `ub_checks`, `unix`, and `windows`
+   = help: to expect this configuration use `--check-cfg=cfg(my_lib_cfg)`
+   = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg.html> for more information about checking conditional configuration
+   = note: `#[warn(unexpected_cfgs)]` on by default
+   = note: this warning originates in the macro `cfg_macro::my_lib_macro` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+warning: 1 warning emitted
+