https://bugzilla.redhat.com/show_bug.cgi?id=919703 --- Comment #9 from Paulo Andrade <paulo.cesar.pereira.de.andrade@xxxxxxxxx> --- (In reply to Volker Braun from comment #8) > Updated tarball at https://bitbucket.org/vbraun/libgap/downloads Thanks, but it still fails with a stack overflow. $ rpm -q gap gap-4.6.5-1.fc20.x86_64 $ libtool --mode=execute gdb test [...] (gdb) r Starting program: /home/pcpa/rpmbuild/BUILD/libgap-4.6.5/test/.libs/lt-test -------------------- Input: 0; Output follows... 0 -------------------- Input: 1 + CyclicGroup(2); Program received signal SIGSEGV, Segmentation fault. libGAP_RNamName (name=name@entry=0x7ffff7970354 "context") at records.c:94 94 pos = (pos % libGAP_SizeRNam) + 1; Missing separate debuginfos, use: debuginfo-install glibc-2.18.90-5.fc21.x86_64 gmp-5.1.2-2.fc20.x86_64 #0 libGAP_RNamName (name=name@entry=0x7ffff7970354 "context") at records.c:94 #1 0x00007ffff79104ab in libGAP_CallErrorInner ( msg=msg@entry=0x7ffff795af48 "Variable: <<unknown>> must have an assigned value", arg1=arg1@entry=0, arg2=arg2@entry=0, justQuit=justQuit@entry=1, mayReturnVoid=mayReturnVoid@entry=0, mayReturnObj=mayReturnObj@entry=0, lateMessage=0x7ffef7785728, printThisStatement=printThisStatement@entry=1) at gap.c:1433 #2 0x00007ffff791068b in libGAP_ErrorQuit ( msg=msg@entry=0x7ffff795af48 "Variable: <<unknown>> must have an assigned value", arg1=arg1@entry=0, arg2=arg2@entry=0) at gap.c:1451 #3 0x00007ffff7843974 in libGAP_ErrorMustHaveAssObjHandler ( self=<optimized out>, args=<optimized out>) at gvars.c:156 #4 0x00007ffff79105e2 in libGAP_CallErrorInner ( msg=msg@entry=0x7ffff795af48 "Variable: <<unknown>> must have an assigned value", arg1=arg1@entry=0, arg2=arg2@entry=0, justQuit=justQuit@entry=1, mayReturnVoid=mayReturnVoid@entry=0, mayReturnObj=mayReturnObj@entry=0, lateMessage=0x7ffef7785728, printThisStatement=printThisStatement@entry=1) at gap.c:1443 [...] After binary searching the start of the frames: (gdb) frame 92466 #0 0x0000000000000000 in ?? () (gdb) frame 92465 #92465 0x0000000000400d1f in main () at test.c:142 142 eval("1 + CyclicGroup(2);\n"); (gdb) frame 92464 #92464 0x00000000004011a4 in eval ( input=input@entry=0x40149f "1 + CyclicGroup(2);\n") at test.c:103 103 status = libGAP_ReadEvalCommand(libGAP_BottomLVars); (gdb) frame 92463 #92463 0x00007ffff784c6d0 in libGAP_ReadEvalCommand (context=0x7ffef7783c70) at read.c:2285 2285 else { libGAP_ReadExpr( libGAP_S_SEMICOLON|libGAP_S_EOF, 'r' ); } (gdb) frame 92462 #92462 0x00007ffff7848c52 in libGAP_ReadExpr (follow=follow@entry=3221225472, mode=mode@entry=114 'r') at read.c:1637 1637 libGAP_ReadAnd( follow, mode ); (gdb) frame 92461 #92461 0x00007ffff7848b92 in libGAP_ReadAnd (follow=follow@entry=3221225472, mode=mode@entry=114 'r') at read.c:1611 1611 libGAP_ReadRel( follow, mode ); (gdb) frame 92460 #92460 0x00007ffff7848a0b in libGAP_ReadRel (follow=follow@entry=3221225472, mode=mode@entry=114 'r') at read.c:1572 1572 libGAP_ReadAri( follow, (isNot == 0 ? mode : 'r') ); (gdb) frame 92459 #92459 0x00007ffff784891d in libGAP_ReadAri (follow=follow@entry=3221225472, mode=<optimized out>) at read.c:1539 1539 libGAP_ReadTerm( follow, 'r' ); (gdb) frame 92458 #92458 0x00007ffff7848813 in libGAP_ReadTerm (follow=follow@entry=3221225472, mode=mode@entry=114 'r') at read.c:1500 1500 libGAP_ReadFactor( follow, mode ); (gdb) frame 92457 #92457 0x00007ffff78485ed in libGAP_ReadFactor ( follow=follow@entry=3221225472, mode=mode@entry=114 'r') at read.c:1449 1449 libGAP_ReadAtom( follow, (sign1 == 0 ? mode : 'r') ); (gdb) frame 92456 #92456 0x00007ffff7848521 in libGAP_ReadAtom (follow=follow@entry=3221225472, mode=<optimized out>) at read.c:1387 1387 libGAP_ReadCallVarAss( follow, mode ); (gdb) frame 92455 #92455 0x00007ffff784af3a in libGAP_ReadCallVarAss (follow=3221225472, mode=<optimized out>) at read.c:395 395 else if ( type == 'g' ) { libGAP_IntrRefGVar( var ); level=0; } (gdb) frame 92454 #92454 0x00007ffff7890351 in libGAP_IntrRefGVar (gvar=1016) at intrprtr.c:2961 2961 libGAP_ErrorQuit( (gdb) frame 92453 #92453 0x00007ffff791068b in libGAP_ErrorQuit (msg=<optimized out>, arg1=<optimized out>, arg2=<optimized out>) at gap.c:1451 1451 libGAP_CallErrorInner(msg, arg1, arg2, 1, 0, 0, libGAP_False, 1); (gdb) frame 92452 #92452 0x00007ffff79105e2 in libGAP_CallErrorInner (msg=<optimized out>, arg1=140733055102272, arg2=<optimized out>, justQuit=justQuit@entry=1, mayReturnVoid=mayReturnVoid@entry=0, mayReturnObj=mayReturnObj@entry=0, lateMessage=0x7ffef7785728, printThisStatement=printThisStatement@entry=1) at gap.c:1443 1443 return libGAP_CALL_2ARGS(libGAP_ErrorInner,r,l); (gdb) frame 92451 #92451 0x00007ffff7843974 in libGAP_ErrorMustHaveAssObjHandler ( self=<optimized out>, args=<optimized out>) at gvars.c:156 156 libGAP_ErrorQuit( (gdb) frame 92450 #92450 0x00007ffff791068b in libGAP_ErrorQuit ( msg=msg@entry=0x7ffff795af48 "Variable: <<unknown>> must have an assigned value", arg1=arg1@entry=0, arg2=arg2@entry=0) at gap.c:1451 1451 libGAP_CallErrorInner(msg, arg1, arg2, 1, 0, 0, libGAP_False, 1); (gdb) frame 92450 #92450 0x00007ffff791068b in libGAP_ErrorQuit ( msg=msg@entry=0x7ffff795af48 "Variable: <<unknown>> must have an assigned value", arg1=arg1@entry=0, arg2=arg2@entry=0) at gap.c:1451 1451 libGAP_CallErrorInner(msg, arg1, arg2, 1, 0, 0, libGAP_False, 1); (gdb) frame 92449 #92449 0x00007ffff79105e2 in libGAP_CallErrorInner ( msg=msg@entry=0x7ffff795af48 "Variable: <<unknown>> must have an assigned value", arg1=arg1@entry=0, arg2=arg2@entry=0, justQuit=justQuit@entry=1, mayReturnVoid=mayReturnVoid@entry=0, mayReturnObj=mayReturnObj@entry=0, lateMessage=0x7ffef7785728, printThisStatement=printThisStatement@entry=1) at gap.c:1443 1443 return libGAP_CALL_2ARGS(libGAP_ErrorInner,r,l); (gdb) frame 92448 #92448 0x00007ffff7843974 in libGAP_ErrorMustHaveAssObjHandler ( self=<optimized out>, args=<optimized out>) at gvars.c:156 156 libGAP_ErrorQuit( (gdb) frame 92447 #92447 0x00007ffff791068b in libGAP_ErrorQuit ( msg=msg@entry=0x7ffff795af48 "Variable: <<unknown>> must have an assigned value", arg1=arg1@entry=0, arg2=arg2@entry=0) at gap.c:1451 1451 libGAP_CallErrorInner(msg, arg1, arg2, 1, 0, 0, libGAP_False, 1); So, the error should be in frame #92454 I do not understand the code, only extra help I can give on a first look is that at the point of failure I see this as the starting point to debug, and should be trivial for the code author :-) (gdb) frame 92454 #92454 0x00007ffff7890351 in libGAP_IntrRefGVar (gvar=1016) at intrprtr.c:2961 2961 libGAP_ErrorQuit( (gdb) p libGAP_PtrGVars[gvar] $19 = (libGAP_Bag) 0x0 (gdb) p libGAP_ExprGVars[gvar] $20 = (libGAP_UInt *) 0x7ffef7baa6b0 -- You are receiving this mail because: You are on the CC list for the bug. _______________________________________________ package-review mailing list package-review@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/package-review