From 2445357166f7c56a0ace34fade761b6df84e4b62 Mon Sep 17 00:00:00 2001
From: Alexander Gorshenev <alexander.gorshenev@jetbrains.com>
Date: Wed, 11 Oct 2017 15:42:53 +0300
Subject: [PATCH] A test to check we don't throw away a library dependency only
 because it it a default lib not needed in the main program.

---
 backend.native/tests/build.gradle        | 6 ++++++
 backend.native/tests/link/purge1/lib.kt  | 8 ++++++++
 backend.native/tests/link/purge1/prog.kt | 4 ++++
 3 files changed, 18 insertions(+)
 create mode 100644 backend.native/tests/link/purge1/lib.kt
 create mode 100644 backend.native/tests/link/purge1/prog.kt

diff --git a/backend.native/tests/build.gradle b/backend.native/tests/build.gradle
index a21847087f0..3dcfd980c7d 100644
--- a/backend.native/tests/build.gradle
+++ b/backend.native/tests/build.gradle
@@ -1227,6 +1227,12 @@ task link_default_libs(type: RunKonanTest) {
     source = "link/default/default.kt"
 }
 
+task no_purge_for_dependencies(type: LinkKonanTest) {
+    goldValue = "linked library\nand symbols from posix available: 17; 1.0\n"
+    source = "link/purge1/prog.kt"
+    lib = "link/purge1/lib.kt"
+}
+
 task for0(type: RunKonanTest) {
     goldValue = "2\n3\n4\n"
     source = "runtime/basic/for0.kt"
diff --git a/backend.native/tests/link/purge1/lib.kt b/backend.native/tests/link/purge1/lib.kt
new file mode 100644
index 00000000000..b0ec3437fb3
--- /dev/null
+++ b/backend.native/tests/link/purge1/lib.kt
@@ -0,0 +1,8 @@
+import platform.posix.*
+
+fun foo() {
+    println("linked library")
+    val size: size_t = 17L
+    val e = fabs(1.toDouble())
+    println("and symbols from posix available: $size; $e")
+}
diff --git a/backend.native/tests/link/purge1/prog.kt b/backend.native/tests/link/purge1/prog.kt
new file mode 100644
index 00000000000..2029e4ebc87
--- /dev/null
+++ b/backend.native/tests/link/purge1/prog.kt
@@ -0,0 +1,4 @@
+
+fun main(args: Array<String>) {
+    foo()
+}