From 4b2cfb709252de6826911141d467dca75598d2f7 Mon Sep 17 00:00:00 2001
From: "Dennis Lambe Jr." <malsyned@malsyned.net>
Date: Fri, 19 Sep 2025 17:46:37 -0400
Subject: [PATCH] mi2:stack-list-frames: use file= if fullname= is missing

When Python Frame Filters are used, GDB doesn't include a fullname=
field in its -stack-list-frames response record. Fall back to the value
of file= instead of reporting Unknown Source.

Fixes #1155
---
 src/backend/mi2/mi2.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/backend/mi2/mi2.ts b/src/backend/mi2/mi2.ts
index 0349e92a..749719ae 100644
--- a/src/backend/mi2/mi2.ts
+++ b/src/backend/mi2/mi2.ts
@@ -833,7 +833,7 @@ export class MI2 extends EventEmitter implements IBackend {
                     ret.push({
                         address: addr,
                         fileName: filename,
-                        file: file,
+                        file: file || filename,
                         function: func || from,
                         level: level,
                         line: line