Option(s) to suppress notifications when source files cannot be found in the debugger

Type: Debugger

Describe the bug

• OS and Version: Ubuntu 16.04.05 LTS
• VS Code Version: 1.28.2 (7f3ce96ff4729c91352ae6def877e59c561f4850)
• C/C++ Extension Version: 0.20.1
• Other extensions you installed (and if the issue persists after disabling them):

When debugging, a notification always pops up when a source file cannot be found, for example:

• Unable to open 'raise.c': File not found (file:///build/glibc-Cl5G7W/glibc-2.23/sysdeps/unix/sysv/linux/raise.c).
• Unable to open 'abort.c': File not found (file:///build/glibc-Cl5G7W/glibc-2.23/stdlib/abort.c).

This happens when an uncaught exception occurred, for example. In itself it's not an impeding issue (everything works), but it is annoying nonetheless - I have to forcefully click the × button each time to close the notification window when this happens.

I could install the libc sources but that's a rather crude solution in my opinion :)

I'd prefer if there is some way to improve on this, such as:

• Provide an option to suppress the notification when files could not be found
• A timed popup (so it pops up and only stays there for 2 seconds)
• A less intrusive way of a notification

I am not sure if this repository is the right place to request this feature (maybe it's written in the VSCode core) but here goes anyway.

To Reproduce

Code sample:

#include <exception>
int main() {
    throw std::exception();
}

launch.json:

{
	"version": "0.2.0",
	"configurations": [
		{
			"name": "(gdb) Launch",
			"type": "cppdbg",
			"request": "launch",
			"program": "${workspaceFolder}/main",
			"args": [],
			"stopAtEntry": false,
			"cwd": "${workspaceFolder}",
			"environment": [],
			"externalConsole": false,
			"MIMode": "gdb",
			"setupCommands": [
				{
					"description": "Enable pretty-printing for gdb",
					"text": "-enable-pretty-printing",
					"ignoreFailures": true
				}
			]
		}
	]
}

When launching, the debugger will kick in ("PAUSED ON EXCEPTION"). A popup immediately shows up that it's unable to open 'raise.c'.

Additional context
The issue is somewhat relevant to this issue (for a different extension): https://github.com/vadimcn/vscode-lldb/issues/146

In any case, thanks so far for the wonderful extension.

Inizia riproducendo la notifica con l’esempio C++ e launch.json forniti nella VS Code C/C++ extension. Determina se la notifica viene emessa dall’estensione o dal core di VS Code, quindi individua il punto di ingresso appropriato e i test esistenti. Il lavoro è completo quando esiste un modo concordato e testato per sopprimere o ridurre queste notifiche relative a sorgenti mancanti.