From 839766a06534721603074840c9ba981087c6429c Mon Sep 17 00:00:00 2001
From: WebFreak001 <janju007@web.de>
Date: Sat, 10 Sep 2016 22:22:10 +0200
Subject: [PATCH] Using undefined instead of "<unknown>" for UI

---
 src/backend/mi2/mi2.ts |  6 +++---
 src/mibase.ts          | 16 +++++++++-------
 2 files changed, 12 insertions(+), 10 deletions(-)

diff --git a/src/backend/mi2/mi2.ts b/src/backend/mi2/mi2.ts
index 71a4a00..742e6cc 100644
--- a/src/backend/mi2/mi2.ts
+++ b/src/backend/mi2/mi2.ts
@@ -525,9 +525,9 @@ export class MI2 extends EventEmitter implements IBackend {
 					let from = parseInt(MINode.valueOf(element, "@frame.from"));
 					ret.push({
 						address: addr,
-						fileName: filename || "",
-						file: file || "<unknown>",
-						function: func || from || "<unknown>",
+						fileName: filename,
+						file: file,
+						function: func || from,
 						level: level,
 						line: line
 					});
diff --git a/src/mibase.ts b/src/mibase.ts
index e354343..3342811 100644
--- a/src/mibase.ts
+++ b/src/mibase.ts
@@ -205,13 +205,15 @@ export class MI2DebugSession extends DebugSession {
 			let ret: StackFrame[] = [];
 			stack.forEach(element => {
 				let file = element.file;
-				if (this.isSSH) {
-					file = relative(this.switchCWD.replace(/\\/g, "/"), file.replace(/\\/g, "/"));
-					file = systemPath.resolve(this.trimCWD.replace(/\\/g, "/"), file.replace(/\\/g, "/"));
-				}
-				else if (process.platform === "win32") {
-					if (file.startsWith("\\cygdrive\\") || file.startsWith("/cygdrive/")) {
-						file = file[10] + ":" + file.substr(11); // replaces /cygdrive/c/foo/bar.txt with c:/foo/bar.txt
+				if (file) {
+					if (this.isSSH) {
+						file = relative(this.switchCWD.replace(/\\/g, "/"), file.replace(/\\/g, "/"));
+						file = systemPath.resolve(this.trimCWD.replace(/\\/g, "/"), file.replace(/\\/g, "/"));
+					}
+					else if (process.platform === "win32") {
+						if (file.startsWith("\\cygdrive\\") || file.startsWith("/cygdrive/")) {
+							file = file[10] + ":" + file.substr(11); // replaces /cygdrive/c/foo/bar.txt with c:/foo/bar.txt
+						}
 					}
 				}
 				ret.push(new StackFrame(element.level, element.function + "@" + element.address, new Source(element.fileName, file), element.line, 0));