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From: Joel Brobecker <brobecker@adacore.com>
To: Jon Turney <jon.turney@dronecode.org.uk>
Cc: gdb-patches@sourceware.org
Subject: Re: [PATCH 4/5] windows-nat: Report an error if ContinueDebugEvent() fails
Date: Wed, 22 Apr 2015 14:10:00 -0000	[thread overview]
Message-ID: <20150422141002.GG4764@adacore.com> (raw)
In-Reply-To: <1429212209-20548-5-git-send-email-jon.turney@dronecode.org.uk>

> 2015-04-16  Jon Turney  <jon.turney@dronecode.org.uk>
> 
> 	* windows-nat.c (windows_continue): Report an error if
> 	ContinueDebugEvent() fails.

Mostly OK, except that I'd like the error message to be a little
more user-friendly. Can you use something like:

    Failed to resume program execution (ContinueDebugEvent failed, error %u)

No need for the "()", use "call to ContinueDebugEvent" instead.

But before you push, would you mind ammending this commit's revision
history to include the info you provided in email 0/5? In particular,
I would just say something like this:

| windows-nat: Report an error if ContinueDebugEvent fails
|
| Using the 'catch-signal' test from the testsuite, on x86_64 Cygwin:
|
|     $ ./gdb testsuite/outputs/gdb.base/catch-signal/catch-signal.exe
|     [...]
|     (gdb) catch signal
|     Catchpoint 1 (standard signals)
|     (gdb) r
|     [...]
|     Catchpoint 1 (signal SIGHUP), main () at
|     ../../../gdb/testsuite/gdb.base/catch-signal.c:40
|     40        raise (SIGHUP);               /* second HUP */
|     (gdb) c
|     Continuing.
|     [hangs]
|
| [say what happens here, and what you are doing - in other words,
| the call to ContinueDebugEvent is failing because we're trying
| to resume the wrong thread, causing GDB to wait forever for another
| event that will never come; and you are not trying to fix the problem
| in this patch, just add error handling]
|
| With this patch applied, resuming the execution of the program
| now yields:
|
|     (gdb) c
|     Continuing.
|     main () at ../../../gdb/testsuite/gdb.base/catch-signal.c:40
|     40        raise (SIGHUP);               /* second HUP */
|     ContinueDebugEvent failed, GetLastError = 87  <<<<<---- **UPDATE**
|
| [ChangeLog]

Thanks!
-- 
Joel


  reply	other threads:[~2015-04-22 14:10 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-04-14 11:03 [PATCH] Fixes to Cygwin-specific signal handling Jon Turney
2015-04-14 13:16 ` Joel Brobecker
2015-04-14 14:38   ` Eli Zaretskii
2015-04-16 19:24   ` Jon TURNEY
2015-04-22 14:23     ` Joel Brobecker
2015-04-16 19:23 ` [PATCH 0/5] Fix to Cygwin-specific signal handling (v2) Jon Turney
2015-04-16 19:23   ` [PATCH 2/5] windows-nat: Cleanups in get_windows_debug_event Jon Turney
2015-04-22 13:52     ` Joel Brobecker
2015-04-16 19:24   ` [PATCH 4/5] windows-nat: Report an error if ContinueDebugEvent() fails Jon Turney
2015-04-22 14:10     ` Joel Brobecker [this message]
2015-04-16 19:24   ` [PATCH 3/5] windows-nat: Fix misspelling in debug output Jon Turney
2015-04-22 13:55     ` Joel Brobecker
2015-04-16 19:24   ` [PATCH 1/5] windows-nat: Don't use ternary conditional operator in get_windows_debug_event Jon Turney
2015-04-22 13:50     ` Joel Brobecker
2015-04-16 19:24   ` [PATCH 5/5] windows-nat: Don't change current_event.dwThreadId in handle_output_debug_string() Jon Turney
2015-04-22 14:18     ` Joel Brobecker
2015-06-10 13:06   ` [PATCH 0/5] Fix to Cygwin-specific signal handling (v2) Jon TURNEY

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