assert broken?

assert broken?

[Stan]

I've run cygcheck and tried this on two systems with the same
results; at this point I'm assuming the problem is not local so I'm
not including the typically requested data. I will be glad to follow
up if my assumption turns out to be incorrect.

The issue is triggering an assert dumps core. Trivial test case:

#include <assert.h>

int main()
{
   assert(1==0);
   return 1;
}      

causes a core dump. I originally noticed this is a gdb session and the
triggered assert leaves a bt showing windows info so it looks like the
stack unwinding is having a bad day.

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Re: assert broken?

[Larry Hall (Cygwin)]

On 2/17/2011 1:49 PM, Stan wrote:
>
> I've run cygcheck and tried this on two systems with the same
> results; at this point I'm assuming the problem is not local so I'm
> not including the typically requested data. I will be glad to follow
> up if my assumption turns out to be incorrect.
>
> The issue is triggering an assert dumps core. Trivial test case:
>
> #include<assert.h>
>
> int main()
> {
>     assert(1==0);
>     return 1;
> }
>
> causes a core dump. I originally noticed this is a gdb session and the
> triggered assert leaves a bt showing windows info so it looks like the
> stack unwinding is having a bad day.

When an assertion fails, it calls abort().

<http://pubs.opengroup.org/onlinepubs/009695399/functions/assert.html>

Are you saying it's not doing this?

-- 
Larry

_____________________________________________________________________

A: Yes.
> Q: Are you sure?
>> A: Because it reverses the logical flow of conversation.
>>> Q: Why is top posting annoying in email?

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Re: assert broken?

[Warren Young]

On 2/17/2011 11:49 AM, Stan wrote:
>
> The issue is triggering an assert dumps core.

It's supposed to.  The core gets you a backtrace, the exact line of code 
which tripped the assertion (you can't always tell just from the text of 
the assert()), the state of variables, etc.  This is a very good thing; 
we wouldn't want it any other way.

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