dev-lang/python-3.1.2-r2 segfaults on initialization when a non-module directory encodings (i.e. without __init__.py) is encountered on PYTHONPATH. It is caused by the use of not yet initialized variable _filters in module _warnings (trying to warn that encodings is not a module). Also reported on debian at http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=575911 Reproducible: Always Steps to Reproduce: $ cd /tmp $ mkdir encodings $ PYTHONPATH=$PWD python3 Actual Results: Segmentation fault Expected Results: No Segmentation fault $ PYTHONPATH=$PWD gdb python3 ... (gdb) run Starting program: /usr/bin/python3 Thread debugging using libthread_db enabled] Program received signal SIGSEGV, Segmentation fault. 0x00007ffff7ac4993 in get_filter (category=0x7ffff7d8de60, message=0x7ffff7fb9d60, filename=0x7ffff7fbf6f8, lineno=1, module=0x7ffff7fbf6f8, registry=0x640660, sourceline=0x0) at Python/_warnings.c:119 119 if (!PyList_Check(_filters)) { (gdb) print _filters $1 = (PyObject *) 0x0 (gdb) bt #0 0x00007ffff7ac4993 in get_filter (category=0x7ffff7d8de60, message=0x7ffff7fb9d60, filename=0x7ffff7fbf6f8, lineno=1, module=0x7ffff7fbf6f8, registry=0x640660, sourceline=0x0) at Python/_warnings.c:119 #1 warn_explicit (category=0x7ffff7d8de60, message=0x7ffff7fb9d60, filename=0x7ffff7fbf6f8, lineno=1, module=0x7ffff7fbf6f8, registry=0x640660, sourceline=0x0) at Python/_warnings.c:352 #2 0x00007ffff7ac5857 in do_warn (message=0x7ffff7f44810, category=0x7ffff7d8de60, stack_level=<value optimized out>) at Python/_warnings.c:604 #3 0x00007ffff7ac5c3b in PyErr_WarnEx (category=0x7ffff7d8de60, text=<value optimized out>, stack_level=1) at Python/_warnings.c:727 #4 0x00007ffff7af77b5 in find_module (fullname=0x7fffffffa640 "encodings", subname=<value optimized out>, path=0x7ffff7fb79e0, buf=0x7fffffff9570 "/tmp/encodings", buflen=4097, p_fp=0x7fffffffa580, p_loader=0x7fffffffa588) at Python/import.c:1468 #5 0x00007ffff7af9ffb in import_submodule (mod=0x7ffff7d94e30, subname=0x7fffffffa640 "encodings", fullname=0x7fffffffa640 "encodings") at Python/import.c:2614 #6 0x00007ffff7afa131 in load_next (mod=0x7ffff7d94e30, altmod=0x7ffff7d94e30, p_name=<value optimized out>, buf=0x7fffffffa640 "encodings", p_buflen=0x7fffffffb658) at Python/import.c:2429 #7 0x00007ffff7afa82c in import_module_level (name=0x0, globals=<value optimized out>, locals=<value optimized out>, fromlist=0x7ffff7faaf38, level=0) at Python/import.c:2146 #8 0x00007ffff7afb555 in PyImport_ImportModuleLevel (name=0x7ffff7f450b0 "encodings", globals=0x640540, locals=0x640540, fromlist=0x7ffff7faaf38, level=0) at Python/import.c:2197 #9 0x00007ffff7adecfd in builtin___import__ (self=<value optimized out>, args=<value optimized out>, kwds=<value optimized out>) at Python/bltinmodule.c:185 #10 0x00007ffff7a61ffc in PyObject_Call (func=0x7ffff7fa65a8, arg=0x7ffff7fb49b0, kw=0x0) at Objects/abstract.c:2160 #11 0x00007ffff7a620fb in call_function_tail (callable=0x7ffff7fa65a8, args=0x7ffff7fb49b0) at Objects/abstract.c:2192 #12 0x00007ffff7a62602 in PyObject_CallFunction (callable=0x7ffff7fa65a8, format=<value optimized out>) at Objects/abstract.c:2216 #13 0x00007ffff7afb68b in PyImport_Import (module_name=0x7ffff7f447d8) at Python/import.c:2804 #14 0x00007ffff7afb845 in PyImport_ImportModule (name=<value optimized out>) at Python/import.c:2057 #15 0x00007ffff7af006e in _PyCodecRegistry_Init () at Python/codecs.c:1060 #16 0x00007ffff7af0345 in _PyCodec_Lookup (encoding=0x621860 "\002") at Python/codecs.c:116 #17 0x00007ffff7b06759 in get_codeset (install_sigs=1) at Python/pythonrun.c:147 #18 Py_InitializeEx (install_sigs=1) at Python/pythonrun.c:274 #19 0x00007ffff7b158eb in Py_Main (argc=1, argv=0x603010) at Modules/main.c:495 #20 0x0000000000400ece in main (argc=1, argv=0x7fffffffdb68) at ./Modules/python.c:170
Please attach the output of emerge --info
It should be rather reported to upstream.
3.1: r351
Fixed in 3.1.2-r4.
