add track_path::path fn for proc-macro usage

Ref #73921

4 files changed, 31 insertions, 0 deletions

diff --git a/src/test/run-make/track-path-dep-info/Makefile b/src/test/run-make/track-path-dep-info/Makefile
new file mode 100644
index 00000000000..465d3744789
--- /dev/null
+++ b/src/test/run-make/track-path-dep-info/Makefile
@@ -0,0 +1,13 @@
+-include ../../run-make-fulldeps/tools.mk
+
+# FIXME(eddyb) provide `HOST_RUSTC` and `TARGET_RUSTC`
+# instead of hardcoding them everywhere they're needed.
+ifeq ($(IS_MUSL_HOST),1)
+ADDITIONAL_ARGS := $(RUSTFLAGS)
+endif
+
+all:
+	# Proc macro
+	$(BARE_RUSTC) $(ADDITIONAL_ARGS) --out-dir $(TMPDIR) macro_def.rs
+	EXISTING_PROC_MACRO_ENV=1 $(RUSTC) --emit dep-info macro_use.rs
+	$(CGREP) "emojis.txt:" < $(TMPDIR)/macro_use.d
diff --git a/src/test/run-make/track-path-dep-info/emojis.txt b/src/test/run-make/track-path-dep-info/emojis.txt
new file mode 100644
index 00000000000..e1a728461f3
--- /dev/null
+++ b/src/test/run-make/track-path-dep-info/emojis.txt
@@ -0,0 +1 @@
+👾👾👾👾👾👾
diff --git a/src/test/run-make/track-path-dep-info/macro_def.rs b/src/test/run-make/track-path-dep-info/macro_def.rs
new file mode 100644
index 00000000000..8777ce21f8b
--- /dev/null
+++ b/src/test/run-make/track-path-dep-info/macro_def.rs
@@ -0,0 +1,11 @@
+#![feature(track_path)]
+#![crate_type = "proc-macro"]
+
+extern crate proc_macro;
+use proc_macro::*;
+
+#[proc_macro]
+pub fn access_tracked_paths(_: TokenStream) -> TokenStream {
+    tracked_path::path("emojis.txt");
+    TokenStream::new()
+}
diff --git a/src/test/run-make/track-path-dep-info/macro_use.rs b/src/test/run-make/track-path-dep-info/macro_use.rs
new file mode 100644
index 00000000000..3c49fd05dd9
--- /dev/null
+++ b/src/test/run-make/track-path-dep-info/macro_use.rs
@@ -0,0 +1,6 @@
+#[macro_use]
+extern crate macro_def;
+
+access_tracked_paths!();
+
+fn main() {}