Re: periodic exception in execnt.c

From: Reece Dunn (msclrhd_at_[hidden])
Date: 2004-12-28 05:19:03

Vladimir Prus wrote:
> Hi Reece,
> 
> please do not use HTML messages.

I am not using HTML. I am sending it using Thunderbird v1 as text via 
the gmane server. Is this a Yahoo group thing?

>> I have been getting the occasional exception in bjam.exe, so I have
>> switched to using a debug build. This has caught an exception in execnt.c:
>>
>> [line]
>> [530] f = fopen( cmdtab[ slot ].tempfile, "w" );
>> [531] fputs( string, f ); // <== HERE
>> [532] fclose( f );
>>
>> The VC++ IDE is reporting that f is 0.
> 
> How/when does it happen? If we can prevent 'f' from being 0, it would be 
> better than giving an error. What does "perror" print, for example?

I am not sure how/when it happens. How do you get the perror value from 
a debug session? Anyway, I shall let you know when it occurs again.

I agree that preventing f == 0 is the right way to go, but I don't yet 
understand why it is being set to 0 in this case. My feeling is that is 
is being set to EMFILE since it does not occur predictably.

BTW, I am running in a bash 2.05 shell with command lines like:

bjam debug msvc-7.1 | log --echo

where log is my bjam to XML log generator.

Regards,
Reece