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<p><p> Matt <br></p><p style="color:rgb(0, 0, 0);font-size:13px;font-family:arial, helvetica, clean, sans-serif;background-color:transparent;font-style:normal;"><br></p><p style="color:rgb(0, 0, 0);font-size:13px;font-family:arial, helvetica, clean, sans-serif;background-color:transparent;font-style:normal;">What program are you running when you receive this error? Are you running a stock version of op25? <br></p> <div class="ygroups-quoted"><br><br>---In op25-dev@yahoogroups.com, <op25-dev@yahoogroups.com> wrote:<br><br><div id="ygrps-yiv-500464183">-----BEGIN PGP SIGNED MESSAGE-----<br>
Hash: SHA1<br>
<br>
hello,<br>
<br>
has anyone seen this error??? :<br>
<br>
*** glibc detected *** /usr/bin/python: free(): invalid pointer:<br>
0xaea02a58 ***<br>
======= Backtrace: =========<br>
/lib/i386-linux-gnu/libc.so.6(+0x75ee2)[0xb75a7ee2]<br>
/usr/lib/i386-linux-gnu/libstdc++.so.6(_ZdlPv+0x1f)[0xb69a6adf]<br>
/usr/lib/i386-linux-gnu/libstdc++.so.6(_ZNSs4_Rep10_M_destroyERKSaIcE+0x1b)[0xb6a0e7bb]<br>
/usr/lib/i386-linux-gnu/libstdc++.so.6(+0xb0800)[0xb6a0e800]<br>
/usr/lib/i386-linux-gnu/libstdc++.so.6(_ZNSsD1Ev+0x2e)[0xb6a0e86e]<br>
/usr/local/lib/python2.7/dist-packages/gnuradio/_op25.so(_ZN19snapshot_du_handler6handleEN5boost10shared_ptrI9data_unitEE+0x2a6)[0xb2d79e56]<br>
/usr/local/lib/python2.7/dist-packages/gnuradio/_op25.so(_ZN17data_unit_handler6handleEN5boost10shared_ptrI9data_unitEE+0x54)[0xb2d78c74]<br>
/usr/local/lib/python2.7/dist-packages/gnuradio/_op25.so(_ZN16voice_du_handler6handleEN5boost10shared_ptrI9data_unitEE+0x66)[0xb2d7b116]<br>
/usr/local/lib/python2.7/dist-packages/gnuradio/_op25.so(_ZN15op25_decoder_bf14receive_symbolEh+0x18c)[0xb2d92bec]<br>
<br>
my guess is the memory mix up is happening here:<br>
<br>
void<br>
snapshot_du_handler::handle(data_unit_sptr du)<br>
{<br>
if(d_msgq) {<br>
string snapshot(du->snapshot());<br>
if(snapshot.size() > 0) {<br>
const size_t snapshot_sz = snapshot.size() + 1;<br>
gr_message_sptr msg = gr_make_message(/*type*/0,<br>
/*arg1*/++d_data_units, /*arg2*/0, snapshot_sz);<br>
char *snapshot_data = reinterpret_cast<char*>(msg->msg());<br>
memcpy(snapshot_data, snapshot.c_str(), snapshot_sz);<br>
d_msgq->handle(msg);<br>
}<br>
}<br>
data_unit_handler::handle(du);<br>
}<br>
<br>
but wait the issue gets more interesting than 'du' pointing to an<br>
invalid location:<br>
<br>
to try to see if i could stop op25 from giving this dying error, i<br>
commented out all of the snaphot()s in the hdu, ldu1, ldu2, and tdu.<br>
but i am still getting all of the pickled data in the python UI.<br>
<br>
¿¿ WTH ??!! can someone please explain to me what i am missing here?<br>
- -- <br>
- ------<br>
Matt D<br>
- ------------<br>
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