signal 11 after kernel update r247742 -> r248706

[René Ladan]

On 04-04-2013 15:20, René Ladan wrote:
> On 29-03-2013 18:58, Adrian Chadd wrote:
>> On 29 March 2013 09:06, René Ladan <rene at freebsd.org
>> <mailto:rene at freebsd.org>> wrote:
>>  
>>
>>     >> I'm at r248509 on my rpi and everything is good; maybe that'll help
>>     >> narrow the binary search.
>>     > Ok, I'll start looking from there.
>>
>>     The 'skeleton' unmapped IO commit was r248508, so that one is OK.
>>     There seem to be some unmapped IO changes between r248509 and r248706,
>>     (e.g. r248510-r248512, r248514-r248522, r248550, r248568-r248569,
>>     r248596) but I think it is more related to something closer to
>>     userland?
>>
>>     But the other commits between r248508 and r248706 look OK to me
>>     (including r248534 (jilles, SOCK_CLOEXEC, SOCK_NONLBOCK,
>>     MSG_CMSG_CLOEXEC))
>>
>>
>> Are you able to continue bisecting those changes?
>>
>> Thanks for your help so far!
>>
> Checkpoint: r248509 boots fine (including init), but running e.g. python
> built under r247742 dumps core during startup.
> kdump output: ftp://rene-ladan.nl/pub/freebsd/python2.7.ktrace
>
Maybe it has to do with the fix applied to libsupc++ in r248624 to get
this program working:

% cat testcpp.cc
#include <iostream>

using namespace std;

int main(void) {
	try {
		throw "throwme";
	}
	catch (const char* msg) {
		cout << msg << endl;
	}

	return 0;
}

With an older libsupc++ , one gets:
% /home/pi/testcpp
/usr/lib/libsupc++.so.1: Undefined symbol "_Unwind_RaiseException"
%

René