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From: "tromey at sourceware dot org" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug win32/8591] gdb for Win32 does not handle Microsoft C++
 exceptions properly.
Date: Tue, 21 Mar 2023 16:16:29 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D8591

Tom Tromey <tromey at sourceware dot org> changed:

           What    |Removed                     |Added
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                 CC|                            |tromey at sourceware dot o=
rg

--- Comment #2 from Tom Tromey <tromey at sourceware dot org> ---
I found this:

https://devblogs.microsoft.com/oldnewthing/20100730-00/?p=3D13273

I wonder if this default case:

    default:
      /* Treat unhandled first chance exceptions specially.  */
      if (current_event.u.Exception.dwFirstChance)
        return HANDLE_EXCEPTION_UNHANDLED;
      debug_printf ("gdb: unknown target exception 0x%08x at %s\n",
        (unsigned) current_event.u.Exception.ExceptionRecord.ExceptionCode,
        host_address_to_string (
          current_event.u.Exception.ExceptionRecord.ExceptionAddress));
      ourstatus->set_stopped (GDB_SIGNAL_UNKNOWN);


should instead report HANDLE_EXCEPTION_UNHANDLED all the time?


I don't have an MS-compiled program to try unfortunately.

One thing I notice is that the current code (no idea about the code
from 20 years ago) does return UNHANDLED for first-chance exceptions.
So maybe this already works properly.

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