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cond
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From: |
Helmut Eller |
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Subject: |
cond |
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Date: |
Wed, 21 Feb 2001 15:34:33 +0100 |
I get a segmentation fault for the following (incorrect) program:
(cond (1 => (lambda (x y) y)))
I observed this for guile 1.3, guile 1.4 and the cvs version (updated
today). Stacktrace follows.
Regards,
Helmut.
----------------------------------------------------------------------
address@hidden:~ > gdb /opt/guile/bin/guile
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This GDB was configured as "i386-redhat-linux"...
(gdb) r
Starting program: /opt/guile/bin/guile
guile> (cond (1 => (lambda (x y) y)))
Program received signal SIGSEGV, Segmentation fault.
0x4003979d in scm_lookupcar (vloc=1075667416, genv=1075666472, check=1)
at eval.c:302
302 if (SCM_UNBNDP (SCM_CAR (*al)))
(gdb) #0 0x4003979d in scm_lookupcar (vloc=1075667416, genv=1075666472,
check=1)
at eval.c:302
#1 0x40040ea0 in scm_deval (x=1075667416, env=1075667760) at eval.c:1952
#2 0x4004024d in scm_i_eval (exp=1075669352, env=1075667760) at eval.c:3866
#3 0x400402df in scm_primitive_eval (exp=1075669352) at eval.c:3883
#4 0x40043fd4 in scm_deval (x=10612, env=1075668600) at eval.c:3013
#5 0x4004024d in scm_i_eval (exp=1075640480, env=1075668600) at eval.c:3866
#6 0x40032638 in scm_start_stack (id=134742336, exp=1075640480,
env=1075668600) at debug.c:538
#7 0x400326e7 in scm_m_start_stack (exp=1075640448, env=1075668600)
at debug.c:555
#8 0x40044af0 in scm_dapply (proc=134661000, arg1=1075640448, args=1075667888)
at eval.c:3458
#9 0x40042828 in scm_deval (x=1075640448, env=1075669880) at eval.c:2522
#10 0x40042f0c in scm_deval (x=1075637680, env=1075669984) at eval.c:2682
#11 0x40042f0c in scm_deval (x=1075670168, env=1075670272) at eval.c:2682
#12 0x400449f5 in scm_dapply (proc=1075632752, arg1=10612, args=10612)
at eval.c:3444
#13 0x4003f084 in scm_apply (proc=1075670336, arg1=10612, args=10612)
at eval.c:3253
#14 0x40031b59 in with_traps_inner (data=0x401d6d40) at debug.c:124
#15 0x4003463e in scm_internal_dynamic_wind (
before=0x40031ad0 <with_traps_before>,
inner=0x40031b30 <with_traps_inner>, after=0x40031b00 <with_traps_after>,
inner_data=0x401d6d40, guard_data=0xbfffe658) at dynwind.c:165
#16 0x40031bc2 in scm_with_traps (thunk=1075670336) at debug.c:134
#17 0x40043fd4 in scm_deval (x=10612, env=1075670400) at eval.c:3013
#18 0x40044a6a in scm_dapply (proc=1075670656, arg1=10612, args=10612)
at eval.c:3447
#19 0x4003f084 in scm_apply (proc=1075670632, arg1=10612, args=10612)
at eval.c:3253
#20 0x40034508 in scm_dynamic_wind (thunk1=1075670704, thunk2=1075670632,
thunk3=1075670496) at dynwind.c:125
#21 0x40043fd4 in scm_deval (x=1075632824, env=1075670768) at eval.c:3013
#22 0x40044a6a in scm_dapply (proc=1075670936, arg1=10612, args=10612)
at eval.c:3447
#23 0x4003f084 in scm_apply (proc=1075670912, arg1=10612, args=10612)
at eval.c:3253
#24 0x4007d9fc in scm_body_thunk (body_data=0xbfffea14) at throw.c:349
#25 0x4007d8b1 in scm_internal_lazy_catch (tag=9076,
body=0x4007d9d0 <scm_body_thunk>, body_data=0xbfffea14,
handler=0x4007da10 <scm_handle_by_proc>, handler_data=0xbfffea2c)
at throw.c:281
#26 0x4007de6e in scm_lazy_catch (tag=9076, thunk=1075670912,
handler=1075631624) at throw.c:573
#27 0x40043fd4 in scm_deval (x=1075632848, env=1075670984) at eval.c:3013
#28 0x40044a6a in scm_dapply (proc=1075671192, arg1=10612, args=10612)
at eval.c:3447
#29 0x4003f084 in scm_apply (proc=1075671168, arg1=10612, args=10612)
at eval.c:3253
---Type <return> to continue, or q <return> to quit---
#30 0x4007d9fc in scm_body_thunk (body_data=0xbfffecd4) at throw.c:349
#31 0x4007d736 in scm_internal_catch (tag=9076,
body=0x4007d9d0 <scm_body_thunk>, body_data=0xbfffecd4,
handler=0x4007da10 <scm_handle_by_proc>, handler_data=0xbfffecec)
at throw.c:205
#32 0x4007ddee in scm_catch (tag=9076, thunk=1075671168, handler=1075671064)
at throw.c:545
#33 0x40043fd4 in scm_deval (x=1075634072, env=1075671320) at eval.c:3013
#34 0x40041745 in scm_deval (x=1075671240, env=1075673216) at eval.c:2098
#35 0x40041745 in scm_deval (x=1075672296, env=1075673640) at eval.c:2098
#36 0x40041745 in scm_deval (x=1075673552, env=1075673640) at eval.c:2098
#37 0x40044a6a in scm_dapply (proc=1075674880, arg1=10612, args=10612)
at eval.c:3447
#38 0x4003f084 in scm_apply (proc=1075674832, arg1=10612, args=10612)
at eval.c:3253
#39 0x40034508 in scm_dynamic_wind (thunk1=1075674912, thunk2=1075674832,
thunk3=1075674776) at dynwind.c:125
#40 0x4003ee29 in scm_ceval (x=1075662656, env=1075652800) at eval.c:3069
#41 0x400401c2 in scm_i_eval_x (exp=1075652968, env=1075652800) at eval.c:3857
#42 0x4004029f in scm_primitive_eval_x (exp=1075652968) at eval.c:3873
#43 0x4004038f in inner_eval_x (data=0x401d2968) at eval.c:3916
#44 0x4003463e in scm_internal_dynamic_wind (
before=0x400402f0 <change_environment>, inner=0x40040370 <inner_eval_x>,
after=0x40040330 <restore_environment>, inner_data=0x401d2968,
guard_data=0x401d2960) at dynwind.c:165
#45 0x40040410 in scm_eval_x (exp=1075652968, module=134744912) at eval.c:3925
#46 0x4007120e in scm_shell (argc=1, argv=0xbffff464) at script.c:644
#47 0x8048906 in inner_main (closure=0x0, argc=1, argv=0xbffff464)
at guile.c:67
#48 0x40057719 in invoke_main_func (body_data=0xbffff3ac) at init.c:638
#49 0x400576c7 in scm_boot_guile_1 (base=0xbffff3a8, closure=0xbffff3ac)
at init.c:618
#50 0x400573cc in scm_boot_guile (argc=1, argv=0xbffff464,
main_func=0x80488f0 <inner_main>, closure=0x0) at init.c:441
#51 0x8048939 in main (argc=1, argv=0xbffff464) at guile.c:76
#52 0x400eaa8e in __libc_start_main (main=0x8048910 <main>, argc=1,
argv=0xbffff464, init=0x8048700 <_init>, fini=0x804898c <_fini>,
rtld_fini=0x4000aa20 <_dl_fini>, stack_end=0xbffff45c)
at ../sysdeps/generic/libc-start.c:92
(gdb)