#11967: os x 10.7 Lion -- Sage segfaults on startup when initializing GiNaC
-----------------------+----------------------------------------------------
Reporter: was | Owner: drkirkby
Type: defect | Status: needs_review
Priority: blocker | Milestone: sage-5.0
Component: porting | Keywords: python osx lion darwin
Work_issues: | Upstream: N/A
Reviewer: | Author: John Palmieri
Merged: | Dependencies:
-----------------------+----------------------------------------------------
Changes (by newvalueoldvalue):
* keywords: => python osx lion darwin
* status: new => needs_review
* author: => John Palmieri
Old description:
> (The problem has been solved -- see below -- though I haven't figured out
> what the right patch should be yet. A solution to get Sage to startup
> without segfault is to delete local/lib/python2.6/config/libpython2.6.a
> and replace it by local/lib/libpython2.6.dylib, then rebuild the pynac
> spkg and the Sage library.)
>
> After getting Sage to building (as explained at #11881), we get
> {{{
> $ sage -gdb
> then "bt" for a backtrace:
> ...
>
> Program received signal EXC_BAD_ACCESS, Could not access memory.
> Reason: KERN_INVALID_ADDRESS at address: 0x0000000000000000
> PyInt_FromLong (ival=Cannot access memory at address 0x0
> ) at intobject.c:91
> 91 intobject.c: No such file or directory.
> in intobject.c
> (gdb) bt
> #0 PyInt_FromLong (ival=Cannot access memory at address 0x0
> ) at intobject.c:91
> #1 0x0000000107781951 in GiNaC::numeric::numeric ()
> #2 0x00000001077c865a in GiNaC::library_init::library_init ()
> #3 0x0000000107662029 in global constructors keyed to
> _ZN5GiNaC8py_funcsE ()
> #4 0x00007fff5fc0fd1a in
> __dyld__ZN16ImageLoaderMachO18doModInitFunctionsERKN11ImageLoader11LinkContextE
> ()
> #5 0x00007fff5fc0fa66 in
> __dyld__ZN16ImageLoaderMachO16doInitializationERKN11ImageLoader11LinkContextE
> ()
> #6 0x00007fff5fc0d258 in
> __dyld__ZN11ImageLoader23recursiveInitializationERKNS_11LinkContextEjRNS_21InitializerTimingListE
> ()
> #7 0x00007fff5fc0d1f1 in
> __dyld__ZN11ImageLoader23recursiveInitializationERKNS_11LinkContextEjRNS_21InitializerTimingListE
> ()
> #8 0x00007fff5fc0e02b in
> __dyld__ZN11ImageLoader15runInitializersERKNS_11LinkContextERNS_21InitializerTimingListE
> ()
> #9 0x00007fff5fc03189 in __dyld__ZN4dyld15runInitializersEP11ImageLoader
> ()
> #10 0x00007fff5fc095cb in __dyld_dlopen ()
> #11 0x00007fff8fddb95b in dlopen ()
> #12 0x00000001000c957a in _PyImport_GetDynLoadFunc ()
> #13 0x00000001000b7095 in _PyImport_LoadDynamicModule ()
> #14 0x00000001000b56d3 in import_submodule ()
> #15 0x00000001000b58eb in load_next ()
> ...
> }}}
New description:
(The problem has been solved -- see below -- though I haven't figured out
what the right patch should be yet. A solution to get Sage to startup
without segfault is to delete local/lib/python2.6/config/libpython2.6.a
and replace it by local/lib/libpython2.6.dylib, then rebuild the pynac
spkg and the Sage library.)
After getting Sage to building (as explained at #11881), we get
{{{
$ sage -gdb
then "bt" for a backtrace:
...
Program received signal EXC_BAD_ACCESS, Could not access memory.
Reason: KERN_INVALID_ADDRESS at address: 0x0000000000000000
PyInt_FromLong (ival=Cannot access memory at address 0x0
) at intobject.c:91
91 intobject.c: No such file or directory.
in intobject.c
(gdb) bt
#0 PyInt_FromLong (ival=Cannot access memory at address 0x0
) at intobject.c:91
#1 0x0000000107781951 in GiNaC::numeric::numeric ()
#2 0x00000001077c865a in GiNaC::library_init::library_init ()
#3 0x0000000107662029 in global constructors keyed to _ZN5GiNaC8py_funcsE
()
#4 0x00007fff5fc0fd1a in
__dyld__ZN16ImageLoaderMachO18doModInitFunctionsERKN11ImageLoader11LinkContextE
()
#5 0x00007fff5fc0fa66 in
__dyld__ZN16ImageLoaderMachO16doInitializationERKN11ImageLoader11LinkContextE
()
#6 0x00007fff5fc0d258 in
__dyld__ZN11ImageLoader23recursiveInitializationERKNS_11LinkContextEjRNS_21InitializerTimingListE
()
#7 0x00007fff5fc0d1f1 in
__dyld__ZN11ImageLoader23recursiveInitializationERKNS_11LinkContextEjRNS_21InitializerTimingListE
()
#8 0x00007fff5fc0e02b in
__dyld__ZN11ImageLoader15runInitializersERKNS_11LinkContextERNS_21InitializerTimingListE
()
#9 0x00007fff5fc03189 in __dyld__ZN4dyld15runInitializersEP11ImageLoader
()
#10 0x00007fff5fc095cb in __dyld_dlopen ()
#11 0x00007fff8fddb95b in dlopen ()
#12 0x00000001000c957a in _PyImport_GetDynLoadFunc ()
#13 0x00000001000b7095 in _PyImport_LoadDynamicModule ()
#14 0x00000001000b56d3 in import_submodule ()
#15 0x00000001000b58eb in load_next ()
...
}}}
--------
New spkg:
[http://sage.math.washington.edu/home/palmieri/SPKG/python-2.7.2.p2.spkg]
--
Comment:
New spkg: on OS X Lion, this deletes the file libpython2.7.a. Self-tests
fail, but they always do with Python. More importantly, Sage starts up
with no problems.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11967#comment:17>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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