add test

Created using spr 1.3.4

Author: fmayer

compiler-rt/test/sanitizer_common/TestCases/Linux/getservent_r.cpp

@@ -0,0 +1,29 @@
+// RUN: %clangxx -O0 %s -o %t && %run %t
+
+// REQUIRES: glibc
+
+#include <arpa/inet.h>
+#include <assert.h>
+#include <netdb.h>
+
+int main(void) {
+  struct servent result_buf;
+  struct servent *result;
+  char buf[1024];
+  assert(getservent_r(&result_buf, buf, sizeof(buf), &result) == 0);
+  assert(result != nullptr);
+
+  // If these fail, check /etc/services if "ssh" exists. I picked this because
+  // it should exist everywhere, if it doesn't, I am sorry. Disable the test
+  // then please.
+  assert(getservbyname_r("ssh", nullptr, &result_buf, buf, sizeof(buf),
+                         &result) == 0);
+  assert(result != nullptr);
+  assert(getservbyport_r(htons(22), nullptr, &result_buf, buf, sizeof(buf),
+                         &result) == 0);
+  assert(result != nullptr);
+
+  assert(getservbyname_r("invalidhadfuiasdhi", nullptr, &result_buf, buf,
+                         sizeof(buf), &result) == 0);
+  assert(result == nullptr);
+}