[Lldb-commits] [lldb] fallback to assembly when source code is not available (PR #136494)

[Ely Ronnen via lldb-commits]

https://github.com/eronnen created https://github.com/llvm/llvm-project/pull/136494

Show assembly code when the source code for a frame is not available in the debugger machine

Fix #136492

After the fix:

[Screencast From 2025-04-20 18-00-30.webm](https://github.com/user-attachments/assets/1ce41715-cf4f-42a1-8f5c-6196b9d685dc)


>From f9d6bcdc606d28db5de42fcdeca55408979ddafb Mon Sep 17 00:00:00 2001
From: Ely Ronnen <elyronnen at gmail.com>
Date: Sun, 20 Apr 2025 17:07:09 +0200
Subject: [PATCH] fallback to assembly when source code is not available

---
 lldb/tools/lldb-dap/JSONUtils.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lldb/tools/lldb-dap/JSONUtils.cpp b/lldb/tools/lldb-dap/JSONUtils.cpp
index 33f10c93d2ada..5b647950cfc6e 100644
--- a/lldb/tools/lldb-dap/JSONUtils.cpp
+++ b/lldb/tools/lldb-dap/JSONUtils.cpp
@@ -750,9 +750,11 @@ llvm::json::Value CreateStackFrame(lldb::SBFrame &frame,
   EmplaceSafeString(object, "name", frame_name);
 
   auto line_entry = frame.GetLineEntry();
+  auto file_spec = line_entry.GetFileSpec();
   // A line entry of 0 indicates the line is compiler generated i.e. no source
   // file is associated with the frame.
-  if (line_entry.GetFileSpec().IsValid() &&
+  if (file_spec.IsValid() &&
+      file_spec.Exists() &&
       (line_entry.GetLine() != 0 ||
        line_entry.GetLine() != LLDB_INVALID_LINE_NUMBER)) {
     object.try_emplace("source", CreateSource(line_entry));