[Bug 941] faxgetty received signal SIGINT

http://bugs.hylafax.org/show_bug.cgi?id=941





------- Comment #8 from [email protected]  2012-03-14 07:09 -------
Thanks to a few users, we managed to have a more detailed backtrace for this
error. Please note that signal received is not SIGINT but SIGSEGV.

It seems that "this" variable is null at some point. How may this be possible?
Can it be a compiler error? The compiler used there is gcc 4.4.3.

ii  g++                 4:4.4.3-1ubuntu1    The GNU C++ compiler
ii  g++-4.4             4.4.3-4ubuntu5      The GNU C++ compiler
ii  gcc                 4:4.4.3-1ubuntu1    The GNU C compiler
ii  gcc-4.4             4.4.3-4ubuntu5      The GNU C compiler
ii  gcc-4.4-base        4.4.3-4ubuntu5      The GNU Compiler Collection (base
package)
ii  libgcc1             1:4.4.3-4ubuntu5    GCC support library

This is a new backtrace:

(gdb) bt
#0  ModemServer::vtraceStatus (this=0x0, kind=1024, fmt=0xbfff50f0 "RECV/CQ:
Adjusting for RTC found at row %u", ap=0xbfff5188 "\020\002\001") at
ModemServer.c++:950
#1  0x0807dca0 in FaxModem::copyQualityTrace (this=0x80ce203, fmt=0x80a6f24
"Adjusting for RTC found at row %u") at CopyQuality.c++:1198
#2  0x08080a24 in FaxModem::recvPageDLEData (this=0x80cde08, tif=0x80cf488,
checkQuality=true, params=..., eresult=...) at CopyQuality.c++:309
#3  0x08070395 in Class1Modem::recvPageData (this=0x80cde08, tif=0x80cf488,
eresult=...) at Class1Recv.c++:1859
#4  0x08070b55 in Class1Modem::recvPage (this=0x80cde08, tif=0x80cf488,
ppm=@0xbfffe98c, eresult=..., id=...) at Class1Recv.c++:619
#5  0x080579e9 in FaxServer::recvFaxPhaseD (this=0x80c1d68, tif=0x80cf488,
info=..., ppm=@0xbfffe98c, result=...) at FaxRecv.c++:247
#6  0x08058446 in FaxServer::recvDocuments (this=0x80c1d68, tif=0x80cf488,
info=..., docs=..., result=...) at FaxRecv.c++:201
#7  0x08058bed in FaxServer::recvFax (this=0x80c1d68, callid=..., result=...)
at FaxRecv.c++:69
#8  0x0805285c in faxGettyApp::processCall (this=0x80c1d68, ctype=2,
eresult=..., callid=...) at faxGettyApp.c++:579
#9  0x080529cb in faxGettyApp::answerCall (this=0x80c1d68, atype=0,
ctype=@0xbffff288, eresult=..., callid=..., dialnumber=0x0) at
faxGettyApp.c++:542
#10 0x08054822 in faxGettyApp::answerPhone (this=0x80c1d68, atype=0, ctype=2,
callid=..., dialnumber=0x0) at faxGettyApp.c++:429
#11 0x0805569d in faxGettyApp::listenForRing (this=0x80c1d68) at
faxGettyApp.c++:248
#12 0x080559e3 in faxGettyApp::listenBegin (this=0x80c1d68) at
faxGettyApp.c++:188
#13 0x08055a31 in faxGettyApp::inputReady (this=0xbfff50f0, fd=11) at
faxGettyApp.c++:905
#14 0x0015ce51 in ?? ()
#15 0x080c1d68 in ?? ()
#16 0x0015ba8f in ?? ()
#17 0x080ca838 in ?? ()
#18 0x0015b9c9 in ?? ()
#19 0x080ca838 in ?? ()
#20 0x08053c3d in main (argc=3, argv=0xbffff7e4) at faxGettyApp.c++:1150


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