Bug 1491

Summary:	On Windows, sp_get_port_by_name() does not return an error for a non-existent port.
Product:	libserialport	Reporter:	Martin Ling <martin-sigrokbugs>
Component:	Portability	Assignee:	Nobody <nobody>
Status:	CONFIRMED ---
Severity:	normal
Priority:	Normal
Version:	unreleased development snapshot
Target Milestone:	---
Hardware:	All
OS:	Windows

Description Martin Ling 2020-01-25 21:34:13 CET

On non-Windows platforms, a non-existent port name passed to sp_get_port_by_name() will result in SP_ERR_FAIL with ENOENT.

On Windows, where port names are not file paths, there is no initial call to readpath(), and the Windows implementation of get_port_details() fails silently.

As a result, it is possible to get an sp_port struct for a non-existent port and try to obtain metadata from it without errors.

An error will still be returned on sp_open().