[Lldb-commits] [lldb] Minor fix to connect-url to support unix-connect sockets on localhost (PR #142875)

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https://github.com/satyajanga updated https://github.com/llvm/llvm-project/pull/142875

>From 4038f339bf5f359121848893eaeba90226ac01d6 Mon Sep 17 00:00:00 2001
From: satya janga <satyajanga at fb.com>
Date: Wed, 4 Jun 2025 09:40:51 -0700
Subject: [PATCH] Minor fix to connect-url to support unix-connect sockets on
 localhost Summary:

Test Plan:

Reviewers:

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Tasks:

Tags:
---
 .../gdb-server/PlatformRemoteGDBServer.cpp    |  6 ++-
 .../platform/connect/TestPlatformConnect.py   | 47 +++++++++++++++++++
 2 files changed, 52 insertions(+), 1 deletion(-)

diff --git a/lldb/source/Plugins/Platform/gdb-server/PlatformRemoteGDBServer.cpp b/lldb/source/Plugins/Platform/gdb-server/PlatformRemoteGDBServer.cpp
index 26ca6ed128972..7eebe8220e016 100644
--- a/lldb/source/Plugins/Platform/gdb-server/PlatformRemoteGDBServer.cpp
+++ b/lldb/source/Plugins/Platform/gdb-server/PlatformRemoteGDBServer.cpp
@@ -800,7 +800,11 @@ std::string PlatformRemoteGDBServer::MakeUrl(const char *scheme,
                                              const char *hostname,
                                              uint16_t port, const char *path) {
   StreamString result;
-  result.Printf("%s://[%s]", scheme, hostname);
+  if (strlen(hostname) > 0)
+    result.Printf("%s://[%s]", scheme, hostname);
+  else
+    result.Printf("%s://", scheme);
+
   if (port != 0)
     result.Printf(":%u", port);
   if (path)
diff --git a/lldb/test/API/commands/platform/connect/TestPlatformConnect.py b/lldb/test/API/commands/platform/connect/TestPlatformConnect.py
index fc6c2ee98df44..af888788617a1 100644
--- a/lldb/test/API/commands/platform/connect/TestPlatformConnect.py
+++ b/lldb/test/API/commands/platform/connect/TestPlatformConnect.py
@@ -57,3 +57,50 @@ def test_platform_process_connect(self):
         self.assertEqual(frame.GetFunction().GetName(), "main")
         self.assertEqual(frame.FindVariable("argc").GetValueAsSigned(), 2)
         process.Continue()
+
+    @skipIfRemote
+    @expectedFailureAll(hostoslist=["windows"], triple=".*-android")
+    @skipIfDarwin  # lldb-server not found correctly
+    @expectedFailureAll(oslist=["windows"])  # process modules not loaded
+    # lldb-server platform times out waiting for the gdbserver port number to be
+    # written to the pipe, yet it seems the gdbserver already has written it.
+    @expectedFailureAll(
+        archs=["aarch64"],
+        oslist=["freebsd"],
+        bugnumber="https://github.com/llvm/llvm-project/issues/84327",
+    )
+    @add_test_categories(["lldb-server"])
+    def test_platform_process_connect_with_unix_connect(self):
+        self.build()
+        import time
+
+        timestamp = int(time.time())
+        listen_url = "/tmp/listen_url_%s" % timestamp
+        port_file = "/tmp/port_file_%s" % timestamp
+        commandline_args = [
+            "platform",
+            "--listen",
+            listen_url,
+            "--socket-file",
+            port_file,
+            "--",
+            self.getBuildArtifact("a.out"),
+            "foo",
+        ]
+        self.spawnSubprocess(lldbgdbserverutils.get_lldb_server_exe(), commandline_args)
+
+        socket_file = lldbutil.wait_for_file_on_target(self, port_file)
+        new_platform = lldb.SBPlatform("remote-" + self.getPlatform())
+        self.dbg.SetSelectedPlatform(new_platform)
+        connect_url = "unix-connect://%s" % socket_file
+        self.runCmd("platform connect %s" % connect_url)
+
+        lldbutil.run_break_set_by_symbol(self, "main")
+        process = self.process()
+
+        process.Continue()
+
+        frame = self.frame()
+        self.assertEqual(frame.GetFunction().GetName(), "main")
+        self.assertEqual(frame.FindVariable("argc").GetValueAsSigned(), 2)
+        process.Continue()