From 8e42fa55dbaec9a6560b59fb023e50713ef94e93 Mon Sep 17 00:00:00 2001
From: 12101111 <w12101111@gmail.com>
Date: Sat, 22 May 2021 19:51:26 +0800
Subject: [PATCH] Add test for deduplicate native lib in linking

---
 src/test/run-make-fulldeps/link-dedup/Makefile | 12 ++++++++++++
 src/test/run-make-fulldeps/link-dedup/depa.rs  |  7 +++++++
 src/test/run-make-fulldeps/link-dedup/depb.rs  |  8 ++++++++
 src/test/run-make-fulldeps/link-dedup/depc.rs  |  4 ++++
 src/test/run-make-fulldeps/link-dedup/empty.rs |  5 +++++
 5 files changed, 36 insertions(+)
 create mode 100644 src/test/run-make-fulldeps/link-dedup/Makefile
 create mode 100644 src/test/run-make-fulldeps/link-dedup/depa.rs
 create mode 100644 src/test/run-make-fulldeps/link-dedup/depb.rs
 create mode 100644 src/test/run-make-fulldeps/link-dedup/depc.rs
 create mode 100644 src/test/run-make-fulldeps/link-dedup/empty.rs

diff --git a/src/test/run-make-fulldeps/link-dedup/Makefile b/src/test/run-make-fulldeps/link-dedup/Makefile
new file mode 100644
index 00000000000..4e7ce0f02d4
--- /dev/null
+++ b/src/test/run-make-fulldeps/link-dedup/Makefile
@@ -0,0 +1,12 @@
+# ignore-msvc
+
+-include ../tools.mk
+
+all:
+	$(RUSTC) depa.rs
+	$(RUSTC) depb.rs
+	$(RUSTC) depc.rs
+	$(RUSTC) empty.rs --cfg bar 2>&1 | $(CGREP) '"-ltesta" "-ltestb" "-ltesta"'
+	$(RUSTC) empty.rs 2>&1 | $(CGREP) '"-ltesta"'
+	$(RUSTC) empty.rs 2>&1 | $(CGREP) -v '"-ltestb"'
+	$(RUSTC) empty.rs 2>&1 | $(CGREP) -v '"-ltesta" "-ltesta"'
diff --git a/src/test/run-make-fulldeps/link-dedup/depa.rs b/src/test/run-make-fulldeps/link-dedup/depa.rs
new file mode 100644
index 00000000000..e48ffd6413c
--- /dev/null
+++ b/src/test/run-make-fulldeps/link-dedup/depa.rs
@@ -0,0 +1,7 @@
+#![crate_type = "rlib"]
+
+#[link(name = "testa")]
+extern "C" {}
+
+#[link(name = "testa")]
+extern "C" {}
diff --git a/src/test/run-make-fulldeps/link-dedup/depb.rs b/src/test/run-make-fulldeps/link-dedup/depb.rs
new file mode 100644
index 00000000000..b1be21fe005
--- /dev/null
+++ b/src/test/run-make-fulldeps/link-dedup/depb.rs
@@ -0,0 +1,8 @@
+#![feature(link_cfg)]
+#![crate_type = "rlib"]
+
+#[link(name = "testb", cfg(foo))]
+extern "C" {}
+
+#[link(name = "testb", cfg(bar))]
+extern "C" {}
diff --git a/src/test/run-make-fulldeps/link-dedup/depc.rs b/src/test/run-make-fulldeps/link-dedup/depc.rs
new file mode 100644
index 00000000000..8dcb3dee5a2
--- /dev/null
+++ b/src/test/run-make-fulldeps/link-dedup/depc.rs
@@ -0,0 +1,4 @@
+#![crate_type = "rlib"]
+
+#[link(name = "testa")]
+extern "C" {}
diff --git a/src/test/run-make-fulldeps/link-dedup/empty.rs b/src/test/run-make-fulldeps/link-dedup/empty.rs
new file mode 100644
index 00000000000..e00ae18f4af
--- /dev/null
+++ b/src/test/run-make-fulldeps/link-dedup/empty.rs
@@ -0,0 +1,5 @@
+extern crate depa;
+extern crate depb;
+extern crate depc;
+
+fn main() {}