#15671: sig_error() without sig_on()
-------------------------------------+-------------------------------------
Reporter: zimmerma | Owner:
Type: defect | Status: needs_work
Priority: major | Milestone: sage-6.4
Component: cython | Resolution:
Keywords: | Merged in:
Authors: Peter Bruin, | Reviewers:
Jeroen Demeyer | Work issues:
Report Upstream: N/A | Commit:
Branch: | 84ef4e5fc1bb75cc74ea9147e36efc243dc1a6ab
u/jdemeyer/ticket/15671 | Stopgaps:
Dependencies: |
-------------------------------------+-------------------------------------
Changes (by pbruin):
* status: needs_review => needs_work
Comment:
Merge conflict because of #16910, which replaced the `mpz_alloc()` in
question by `sage_malloc()`.
I tried running the example again (with `ulimit -v 2000000` to keep memory
usage within reasonable bounds) and got different errors. First try:
{{{
sage: search(15)
sig_error() without sig_on()
Program received signal SIGABRT, Aborted.
0x00007ffff74560d5 in raise () from /lib/x86_64-linux-gnu/libc.so.6
(gdb) bt
#0 0x00007ffff74560d5 in raise () from /lib/x86_64-linux-gnu/libc.so.6
#1 0x00007ffff745983b in abort () from /lib/x86_64-linux-gnu/libc.so.6
#2 0x00007fffeb373082 in sig_error () from
/home/bruinpj/src/sage/local/lib/libcsage.so
#3 0x00007fffeb373171 in alloc_error () from
/home/bruinpj/src/sage/local/lib/libcsage.so
#4 0x00007fffeb3731f8 in sage_gmp_realloc () from
/home/bruinpj/src/sage/local/lib/libcsage.so
#5 0x00007fffeb124f21 in __gmpz_realloc (m=0x1b48dfc0, new_alloc=2) at
realloc.c:33
#6 0x00007fffeb121e70 in __gmpz_mul_si (prod=0x1b48dfc0, mult=0x1b48df50,
small_mult=2445144) at mul_i.h:67
#7 0x00007fffe35185b2 in __pyx_f_4sage_5rings_7integer_7Integer__mul_long
(__pyx_v_self=0x1b48df30, __pyx_v_n=2445144) at
build/cythonized/sage/rings/integer.c:12409
#8 0x00007fffe73c4c73 in
__pyx_pf_4sage_9structure_7element_11RingElement_10__mul__
(__pyx_v_right=<sage.rings.integer.Integer at remote 0x1b48df30>,
__pyx_v_left=
2445144) at build/cythonized/sage/structure/element.c:16796
...
Unhandled SIGABRT: An abort() occurred in Sage.
This probably occurred because a *compiled* component of Sage has a bug
in it and is not properly wrapped with sig_on(), sig_off().
Sage will now terminate.
}}}
Second try:
{{{
sage: search(15)
Program received signal SIGSEGV, Segmentation fault.
0x00007ffff756a1e7 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
(gdb) bt
#0 0x00007ffff756a1e7 in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#1 0x00007fffe3512bc5 in __pyx_f_4sage_5rings_7integer_fast_tp_new
(__pyx_v_t=<optimized out>, __pyx_v_a=<optimized out>,
__pyx_v_k=<optimized out>)
at /usr/include/x86_64-linux-gnu/bits/string3.h:52
#2 0x00007fffe3532684 in
__pyx_pf_4sage_5rings_7integer_7Integer_72__pow__
(__pyx_v_self=<sage.rings.integer.Integer at remote 0x7fffbc5a7ab0>,
__pyx_v_n=1,
__pyx_v_modulus=<optimized out>) at
build/cythonized/sage/rings/integer.c:13906
#3 0x00007ffff7a43832 in ternary_op (v=<sage.rings.integer.Integer at
remote 0x7fffbc5a7ab0>, w=1, z=None, op_slot=48, op_name=<optimized out>)
at Objects/abstract.c:1065
...
Unhandled SIGSEGV: A segmentation fault occurred in Sage.
This probably occurred because a *compiled* component of Sage has a bug
in it and is not properly wrapped with sig_on(), sig_off().
Sage will now terminate.
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/15671#comment:13>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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