From: Duncan Roe <duncan_roe@optusnet.com.au>
To: cygwin@cygwin.com
Subject: Re: Failed assertion dialog box
Date: Sun, 15 Nov 2020 15:46:13 +1100 [thread overview]
Message-ID: <20201115044613.GE2905@dimstar.local.net> (raw)
In-Reply-To: <CAH5rLZV+T7u_u6TgivKA7y2RmBJiySVuUsxPVJQjLsEYoN91_A@mail.gmail.com>
On Fri, Nov 13, 2020 at 11:21:12PM -0500, cygwin wrote:
> On Fri, Nov 13, 2020 at 10:45 PM Duncan Roe <duncan_roe@optusnet.com.au>
> wrote:
>
> > Hi William,
> >
> > On Fri, Nov 13, 2020 at 12:27:57PM -0500, cygwin wrote:
> > > I've run into a problem running a collection of tests under Cygwin and I
> > > wonder if anyone can suggest a way around it.
> > >
> > > The problem occurs when a program being run fails a C/C++ runtime
> > > assertion. Ordinarily, this just writes an error message on stderr and
> > > aborts. Under Cygwin, however, if both stdin and stderr are redirected to
> > > files, the program instead pops up a dialog box that must be
> > interactively
> > > dismissed before the failed program will exit - holding up all the tests
> > > that follow it.
> > >
> > > Specifically, if I have the following as assert.cpp:
> > >
> > > #include <assert.h>
> > > int main() {
> > > assert(false);
> > > }
> > >
> > > and say
> > >
> > > gcc assert.cpp
> > > ./a.exe < /dev/null > output 2>&1
> > >
> > > I get an error dialog box saying
> > >
> > > Failed assertion
> > > false
> > > at line 3 of file assert.cpp
> > > in function int main()
> > >
> > > If I omit either the stdin or the stderr redirection, the program behaves
> > > as desired with no dialog box.
> > >
> > > Is there an environment setting or compiler command-line option I can
> > give
> > > to suppress the dialog box and always just write a message to stderr and
> > > abort? Thanks for any insights.
> >
> > Your example WFFM, (Cygwin64, gcc 10.2.0, everything else also up to date).
> >
> > Do you still see this behaviour if you run the installer?
> >
>
> Thanks for your reply; unfortunately, yes, it does. I had refreshed
> the installation fairly recently, and running the installer only updated a
> few things, not cygwin.dll and not gcc; my installation is the same as
> yours. I've tried it with three different shells (tcsh, bash, mksh) and
> with both gcc and clang, and all have the same behavior. (Interestingly, if
> I compile the example with MSVC and run it in a Cygwin shell, it does _not_
> pop up an error dialog box, so presumably it's in the Cygwin runtime,
> specifically the definition of __assert_func.)
>
> --
> William M. (Mike) Miller | Edison Design Group
> william.m.miller@gmail.com
Sorry, should have mentioned running on Win7 Home.
When I try it on my wife's Win10 system, I get the dialog box same as you.
Cheers ... Duncan.
next prev parent reply other threads:[~2020-11-15 4:46 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-11-13 17:27 William M. (Mike) Miller
2020-11-14 3:45 ` Duncan Roe
2020-11-14 4:21 ` William M. (Mike) Miller
2020-11-14 4:37 ` André Bleau
2020-11-14 5:37 ` Lemures Lemniscati
2020-11-14 14:12 ` William M. (Mike) Miller
2020-11-14 15:24 ` Lemures Lemniscati
2020-11-14 15:53 ` William M. (Mike) Miller
2020-11-15 4:46 ` Duncan Roe [this message]
2020-11-15 13:12 ` William M. (Mike) Miller
2020-11-15 20:04 ` André Bleau
2020-11-15 20:39 ` André Bleau
2020-11-15 20:59 ` William M. (Mike) Miller
2020-11-19 14:21 ` Failed assertion dialog box ATTN: Takashi Yano André Bleau
2020-11-19 18:30 ` Thomas Wolff
2020-11-19 21:53 ` André Bleau
2020-11-20 0:06 ` Duncan Roe
2020-11-20 0:19 ` Takashi Yano
2020-11-20 1:40 ` Duncan Roe
2020-11-20 2:04 ` Duncan Roe
2020-11-20 7:09 ` Thomas Wolff
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