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Re: OpenBSD 7.4-current port and test produces an Abort trap at callback_bad with 'callback_args string'
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From: Matti V. <mav...@gm...> - 2023-12-14 08:28:29
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What are the used eg++ and g++ versions here? They said at https://matrix.to/#/#openbsd:matrix.org that the compilers should have feature parity. Possibly the used versions differ? On Wed, Dec 13, 2023 at 5:52 PM Barry Scott <ba...@ba...> wrote: > The problem is that eg++ has no working support for C++ exceptions. > > The following simple C++ program fails to work: > > #include <stdio.h> > #include <stdlib.h> > #include <iostream> > > int main() > { > std::cout << "Hello" <<std::endl; > try > { > throw 20; > } > catch (int e) > { > std::cout << "catch of " << e << std::endl; > } > return 0; > } > > On Fedora 39 I get this: > > $ g++ -g -O0 -o a a.cpp > $ ./a > Hello > catch of 20 > > > On OpenBSD 7.4 I get this: > > $ eg++ -g -O0 -o a a.cpp > $ ./a > Hello > Abort trap (core dumped) > > And with explicit option: > > $ eg++ -g -O0 -o a -fexceptions a.cpp; ./a > Hello > Abort trap (core dumped) > > Fix the compiler and PyCXX should work. > > Barry > > > > > On 13 Dec 2023, at 11:10, Barry Scott <ba...@ba...> wrote: > > I now have an old laptop with OpenBSD 7.4 installed. > Was way harder then it should be to install this OS... > > I'll try and repro what you are seeing. > > My working guess is that the compile options broke C++ exception handing. > > Barry > > > > On 11 Dec 2023, at 09:06, Matti Viljamaa <mav...@gm...> wrote: > > FYI, I am replicating the issue at po...@op... mailing list to get > different views: > > https://marc.info/?l=openbsd-ports&m=170227787921446&w=2 > > On Sat, Dec 9, 2023 at 2:45 PM Matti Viljamaa <mav...@gm...> > wrote: > >> Maybe the following is helpful: >> >> (gdb) bt >> #0 thrkill () at /tmp/-:2 >> #1 0xf7a555255abd010d in ?? () >> #2 0x000000d3e7980c52 in _libc_abort () at >> /usr/src/lib/libc/stdlib/abort.c:51 >> #3 0x000000d4b9c3ce70 in uw_init_context_1 ( >> context=<error reading variable: dwarf2_find_location_expression: >> Corrupted DWARF expression.>, context@entry=0x794f944a9560, >> outer_cfa=<error reading variable: dwarf2_find_location_expression: >> Corrupted DWARF expression.>, outer_cfa@entry=0x794f944a9910, >> outer_ra=<error reading variable: dwarf2_find_location_expression: >> Corrupted DWARF expression.>) at >> /usr/obj/ports/gcc-11.2.0/gcc-11.2.0/libgcc/unwind-pe.h:88 >> #4 0x000000d4b9c3c5d9 in _Unwind_RaiseException (exc=0xd3f70264c0) >> at /usr/obj/ports/gcc-11.2.0/gcc-11.2.0/libgcc/unwind.inc:93 >> #5 0x000000d4b9b25414 in __cxxabiv1::__cxa_throw (obj=<optimized out>, >> tinfo=0xd3f5aaa770 <typeinfo for Py::ValueError>, >> dest=0xd3f5a9a6e2 <Py::ValueError::~ValueError()>) >> at >> /usr/obj/ports/gcc-11.2.0/gcc-11.2.0/libstdc++-v3/libsupc++/eh_throw.cc:90 >> #6 0x000000d3f5a9a73d in Py::ValueError::throwFunc () >> at ./CXX/Python3/cxx_standard_exceptions.hxx:74 >> #7 0x000000d3f5a98426 in Py::ifPyErrorThrowCxxException () >> at Src/Python3/cxx_exceptions.cxx:41 >> #8 0x000000d3f5a80e1c in Py::Callable::apply (this=0x794f944a9a40, >> args=...) >> at ./CXX/Python3/Objects.hxx:3241 >> #9 0x000000d3f5a842c8 in simple_module::func_with_callback >> (this=0xd45b2ef460, >> args=...) at Demo/Python3/simple.cxx:351 >> #10 0x000000d3f5a8b513 in >> Py::ExtensionModule<simple_module>::invoke_method_keyword ( >> this=0xd45b2ef460, method_def=0xd410e7b420, args=..., keywords=...) >> at ./CXX/Python3/ExtensionModule.hxx:192 >> #11 0x000000d3f5a9524d in Py::method_keyword_call_handler (Python >> Exception <class 'gdb.error'> There is no member named ob_item.: >> _self_and_name_tuple=, Python Exception <class 'gdb.error'> There is no >> member named ob_item.: >> >> _args=, _keywords=0x0) at Src/Python3/cxx_extensions.cxx:1695 >> #12 0x000000d41f076d1c in cfunction_call () from >> /usr/local/lib/libpython3.10.so.0.0 >> #13 0x000000d41f01cc75 in _PyObject_MakeTpCall () >> from /usr/local/lib/libpython3.10.so.0.0 >> #14 0x000000d41f129e60 in call_function () from >> /usr/local/lib/libpython3.10.so.0.0 >> #15 0x000000d41f1206c0 in _PyEval_EvalFrameDefault () >> from /usr/local/lib/libpython3.10.so.0.0 >> #16 0x000000d41f11d4e4 in _PyEval_Vector () from >> /usr/local/lib/libpython3.10.so.0.0 >> #17 0x000000d41f185527 in run_mod () from >> /usr/local/lib/libpython3.10.so.0.0 >> #18 0x000000d41f185e0c in PyRun_InteractiveOneObjectEx () >> from /usr/local/lib/libpython3.10.so.0.0 >> #19 0x000000d41f1848be in _PyRun_InteractiveLoopObject () >> from /usr/local/lib/libpython3.10.so.0.0 >> #20 0x000000d41f183dfb in _PyRun_AnyFileObject () >> from /usr/local/lib/libpython3.10.so.0.0 >> #21 0x000000d41f187d2d in PyRun_AnyFileExFlags () >> from /usr/local/lib/libpython3.10.so.0.0 >> #22 0x000000d41f1ac960 in Py_RunMain () from >> /usr/local/lib/libpython3.10.so.0.0 >> #23 0x000000d41f1adc33 in pymain_main () from >> /usr/local/lib/libpython3.10.so.0.0 >> #24 0x000000d41f1ae02c in Py_BytesMain () from >> /usr/local/lib/libpython3.10.so.0.0 >> #25 0x000000d1cd9a4971 in _start () >> >> On Sat, Dec 9, 2023 at 2:35 PM Matti Viljamaa <mav...@gm...> >> wrote: >> >>> PYTHONPATH=obj egdb python3 >>> GNU gdb (GDB) 9.2 >>> Copyright (C) 2020 Free Software Foundation, Inc. >>> License GPLv3+: GNU GPL version 3 or later < >>> http://gnu.org/licenses/gpl.html> >>> This is free software: you are free to change and redistribute it. >>> There is NO WARRANTY, to the extent permitted by law. >>> Type "show copying" and "show warranty" for details. >>> This GDB was configured as "x86_64-unknown-openbsd7.4". >>> Type "show configuration" for configuration details. >>> For bug reporting instructions, please see: >>> <http://www.gnu.org/software/gdb/bugs/>. >>> Find the GDB manual and other documentation resources online at: >>> <http://www.gnu.org/software/gdb/documentation/>. >>> >>> For help, type "help". >>> Type "apropos word" to search for commands related to "word"... >>> Reading symbols from python3... >>> (No debugging symbols found in python3) >>> (gdb) import simple >>> Undefined command: "import". Try "help". >>> (gdb) run >>> Starting program: /usr/local/bin/python3 >>> Python 3.10.13 (main, Dec 5 2023, 18:39:12) [Clang 16.0.6 ] on openbsd7 >>> Type "help", "copyright", "credits" or "license" for more information. >>> >>> import simple >>> warning: File "/usr/local/lib/libestdc++.so.20.0-gdb.py" auto-loading >>> has been declined by your `auto-load safe-path' set to >>> "/usr/local/share/gdb/auto-load". >>> To enable execution of this file add >>> add-auto-load-safe-path /usr/local/lib/libestdc++.so.20.0-gdb.py >>> line to your configuration file "/root/.gdbinit". >>> To completely disable this security protection add >>> set auto-load safe-path / >>> line to your configuration file "/root/.gdbinit". >>> For more information about this security protection see the >>> "Auto-loading safe path" section in the GDB manual. E.g., run from the >>> shell: >>> info "(gdb)Auto-loading safe path" >>> sizeof(int) 4 >>> sizeof(long) 8 >>> sizeof(Py_hash_t) 8 >>> sizeof(Py_ssize_t) 8 >>> >>> def callback_bad( arg ): >>> ... raise ValueError( 'callback_bad error' ) >>> ... >>> >>> simple.func_with_callback( callback_bad, 'fred' ) >>> >>> Program received signal SIGABRT, Aborted. >>> thrkill () at /tmp/-:2 >>> 2 /tmp/-: No such file or directory. >>> (gdb) Quit >>> (gdb) >>> >>> --- >>> >>> Now what? >>> >>> On Tue, Dec 5, 2023 at 1:46 PM Barry Scott <ba...@ba...> >>> wrote: >>> >>>> >>>> On 29/11/2023 13:02, Matti Viljamaa wrote: >>>> >>>> On a closer inspection it seems related to the line: >>>> >>>> simple.func_with_callback( callback_bad, 'fred' ) >>>> >>>> because replacing that with a direct call: >>>> >>>> call_back('fred') >>>> >>>> works as expected: >>>> >>>> ... >>>> TEST: call C++ with Python callback_good >>>> callback_good with 'callback_args string' >>>> PASS callback_good returned 'good result' >>>> TEST: call C++ with Python callback_bad >>>> callback_bad with 'fred' >>>> PASS callback_bad: error callback_bad error >>>> TEST: call C++ with Python callback_raise_simple_error >>>> callback_bad with 'callback_args string' >>>> Abort trap (core dumped) >>>> >>>> Is there some problem with raising exceptions with the >>>> simple.func_with_callback? >>>> >>>> However, I also think there might be a problem with: >>>> >>>> TEST: call C++ with Python callback_good >>>> callback_good with 'callback_args string' >>>> PASS callback_good returned 'good result' >>>> >>>> because I think it shouldn't show 'callback_args string' >>>> >>>> On Wed, Nov 29, 2023 at 1:15 PM Matti Viljamaa < >>>> mav...@gm...> wrote: >>>> >>>>> I am attempting to build pycxx-7.1.8 for OpenBSD 7.4-current. >>>>> >>>>> I am following the Unix installation guide at: >>>>> >>>>> https://cxx.sourceforge.net/ >>>>> >>>>> The final line: >>>>> >>>>> make -f linux.mak clean test >>>>> >>>>> or >>>>> >>>>> gmake -f linux.mak clean test >>>>> >>>>> in OpenBSD >>>>> >>>>> fails to >>>>> >>>>> ... >>>>> TEST: call C++ with Python callback_bad >>>>> callback_bad with 'callback_args string' >>>>> Abort trap (core dumped) >>>>> gmake: *** [linux.mak:86: test] Error 134 >>>>> >>>>> Upon inspecting test_simple.py I've noticed that it seems to be linked >>>>> to raising ValueError, because commenting out line 31: >>>>> >>>>> raise ValueError( 'callback_bad error' ) >>>>> >>>>> in test_simple.py makes test_simple.py progress to the next test. Now >>>>> I see: >>>>> >>>>> ... >>>>> TEST: call C++ with Python callback_bad >>>>> callback_bad with 'callback_args string' >>>>> FAILED callback_bad None >>>>> TEST: call C++ with Python callback_raise_simple_error >>>>> callback_bad with 'callback_args string' >>>>> Abort trap (core dumped) >>>>> >>>>> However, since the Abort traps continue showing, I speculate that this >>>>> is about something more. Possible reasons: >>>>> >>>>> * pycxx-7.1.8 is not compatible with Python 3.10 (or a particular >>>>> subversion) >>>>> * something is different in OpenBSD compared to Linux >>>>> >>>>> Any ideas? >>>>> >>>> This is how to run the failing test on its own to debug it: >>>> : 11:44:26 worthy ~/Projects/pycxx-trunk >>>> : [1] barry $ PYTHONPATH=obj gdb python3.10 >>>> GNU gdb (Fedora Linux) 13.2-11.fc39 >>>> Copyright (C) 2023 Free Software Foundation, Inc. >>>> License GPLv3+: GNU GPL version 3 or later >>>> <http://gnu.org/licenses/gpl.html> <http://gnu.org/licenses/gpl.html> >>>> This is free software: you are free to change and redistribute it. >>>> There is NO WARRANTY, to the extent permitted by law. >>>> Type "show copying" and "show warranty" for details. >>>> This GDB was configured as "x86_64-redhat-linux-gnu". >>>> Type "show configuration" for configuration details. >>>> For bug reporting instructions, please see: >>>> <https://www.gnu.org/software/gdb/bugs/> >>>> <https://www.gnu.org/software/gdb/bugs/>. >>>> Find the GDB manual and other documentation resources online at: >>>> <http://www.gnu.org/software/gdb/documentation/> >>>> <http://www.gnu.org/software/gdb/documentation/>. >>>> >>>> For help, type "help". >>>> Type "apropos word" to search for commands related to "word"... >>>> Reading symbols from python3.10... >>>> Reading symbols from >>>> /home/barry/.cache/debuginfod_client/5ba318aef33a2277a4c3e2fef48addf050553288/debuginfo... >>>> >>>> (gdb) import >>>> simple >>>> >>>> Undefined command: "import". Try "help". >>>> (gdb) run >>>> Starting program: /usr/bin/python3.10 >>>> [Thread debugging using libthread_db >>>> enabled] >>>> >>>> Using host libthread_db library "/lib64/libthread_db.so.1". >>>> Python 3.10.13 (main, Aug 28 2023, 00:00:00) [GCC 13.2.1 20230728 (Red >>>> Hat 13.2.1-1)] on >>>> linux >>>> >>>> Type "help", "copyright", "credits" or "license" for more information. >>>> >>> import >>>> simple >>>> >>>> sizeof(int) >>>> 4 >>>> >>>> sizeof(long) 8 >>>> sizeof(Py_hash_t) 8 >>>> sizeof(Py_ssize_t) 8 >>>> >>> def callback_bad( arg ): >>>> ... raise ValueError( 'callback_bad error' ) >>>> ... >>>> >>> simple.func_with_callback( callback_bad, 'fred' ) >>>> Traceback (most recent call last): >>>> File "<stdin>", line 1, in <module> >>>> File "<stdin>", line 2, in callback_bad >>>> ValueError: callback_bad error >>>> >>> >>>> >>>> >>>> _______________________________________________ >>>> CXX-Users mailing lis...@li...https://lists.sourceforge.net/lists/listinfo/cxx-users >>>> >>>> _______________________________________________ >>>> CXX-Users mailing list >>>> CXX...@li... >>>> https://lists.sourceforge.net/lists/listinfo/cxx-users >>>> >>> _______________________________________________ > CXX-Users mailing list > CXX...@li... > https://lists.sourceforge.net/lists/listinfo/cxx-users > > > _______________________________________________ > CXX-Users mailing list > CXX...@li... > https://lists.sourceforge.net/lists/listinfo/cxx-users > > > |
