[xcas-devel] Segfault sur xcas

[corrosifdev <cor...@fr...>]

Sur la derni=E8re version cvs de xcas, compil=E9 en mode debug, j'ai eu=20
droit =E0 un segfault lors des deux premiers lancement (imm=E9diat lorsqu=
e=20
j'ai tent=E9 de le lancer directement la premi=E8re fois, apr=E8s la dema=
nde=20
d'un calcul depuis gdb pour la seconde). L'interface restait fig=E9e, et=20
je devais killer le process pour m'en sortir.
Curieusement, apr=E8s le troisi=E8me lancement, tout s'est mis =E0 marche=
r=20
parfaitement.

Heureusement, j'ai pu conserver la trace afin de pouvoir isoler le probl=E8=
me.

corrosif@joshua ~ $ gdb xcas
GNU gdb 6.3
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you =
are
welcome to change it and/or distribute copies of it under certain=20
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for detail=
s.
This GDB was configured as "i686-pc-linux-gnu"...(no debugging symbols=20
found)
Using host libthread_db library "/lib/libthread_db.so.1".

(gdb) run
Starting program: /usr/bin/xcas
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
// Found xcas directory /usr/bin/
// Using help file /usr/share/giac/aide_cas
// Unable to find config file /usr/local/share/giac//xcas.rc
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
// Reading config file /home/corrosif/.xcasrc
// User configuration done
// Read 1027 entries from cache /usr/share/giac/doc/fr/html_mtt
// Read 2763 entries from cache /usr/share/giac/doc/fr/html_mall
// Read 1761 entries from cache /usr/share/giac/doc/fr/html_vall
(no debugging symbols found)

Program received signal SIGUSR1, User defined signal 1.
0xffffe410 in __kernel_vsyscall ()
(gdb) bt
#0  0xffffe410 in __kernel_vsyscall ()
#1  0xb74e6e80 in nanosleep () from /lib/libc.so.6
#2  0xb7510baa in usleep () from /lib/libc.so.6
#3  0x080b2c3c in std::vector<giac::gen, std::allocator<giac::gen>=20
 >::reserve ()
#4  0xb7f74b9f in Fl_XPM_Image::~Fl_XPM_Image () from=20
/usr/lib/fltk-1.1/libfltk.so.1.1
#5  0xb7f2ef37 in Fl::wait () from /usr/lib/fltk-1.1/libfltk.so.1.1
#6  0xb7f2f00b in Fl::run () from /usr/lib/fltk-1.1/libfltk.so.1.1
#7  0x080d6b57 in std::vector<giac::gen, std::allocator<giac::gen>=20
 >::reserve ()
#8  0x080d9071 in std::vector<giac::gen, std::allocator<giac::gen>=20
 >::reserve ()
#9  0xb7472f24 in __libc_start_main () from /lib/libc.so.6
#10 0x08055b31 in ?? ()

Je pr=E9cise que =E7a a =E9t=E9 install=E9 avec FLTK-1.1.4.
En revanche, giac appel=E9 depuis la ligne de commande a toujours tr=E8s=20
bien march=E9.