[patch] Implement __cxa_atexit

[Jeff Johnston]

Christopher Faylor wrote:
> On Tue, Sep 14, 2004 at 07:24:33PM -0400, Christopher Faylor wrote:
> 
>>On Tue, Sep 14, 2004 at 02:46:57PM -0400, jjohnstn wrote:
>>
>>>Apparently there is some hidden dependency in Cygwin on the _reent struct 
>>>as old applications are no longer working with this change.  This is 
>>>unfortunate.  Until someone from Cygwin can determine what the problem is 
>>>I have chosen to freeze sys/reent.h for Cygwin by putting it in the 
>>>libc/sys/cygwin/sys directory.  The new changes have been modified to look 
>>>for a new flag __REENT_HAS_CXA_SUPPORT to enable the new cxa support.  The 
>>>default libc/include/sys/reent.h has the flag turned on.
>>
>>We were actually relying on behavior between two different versions of a
>>compiler being unchanged.
>>
>>This is the minimal way to fix this.  I suppose it really should be
>>#ifdef __CYGWIN__ though.
>>
>>I can fix this in another way in cygwin but this seemed cleaner and
>>more straightforward.
>>
>>This patch is against the previous version of reent.h prior to any
>>conditionalization.  With this change cygwin seems to be ok.
> 
> 
> Nevermind.  I fixed this in cygwin, so there is no need to modify
> newlib.
> 
> You can, however, revert the cygwin-specific changes that you made.
> 

Thanks for tracking down the problem.  I have reverted the Cygwin-fix.

-- Jeff J.