#1082: Segfault occurs when use a alias of pretty_print_inspect without implementing pretty_print. ----------------------------------+----------------------------------------- Reporter: watson1978@… | Owner: lsansonetti@… Type: defect | Status: new Priority: blocker | Milestone: Component: MacRuby | Keywords: ----------------------------------+----------------------------------------- Test Script: {{{ #!ruby require 'pp' class PrettyPrintInspectWithPrettyPrint def pretty_print(x) x.text "ok" end alias inspect pretty_print_inspect end class PrettyPrintInspectWithoutPrettyPrint alias inspect pretty_print_inspect end a = PrettyPrintInspectWithPrettyPrint.new p a.inspect b = PrettyPrintInspectWithoutPrettyPrint.new p b.inspect }}} Result: {{{ $ ruby test_pp.rb "ok" /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/pp.rb:293:in `inspect': pretty_print is not overridden for PrettyPrintInspectWithoutPrettyPrint (RuntimeError) from test_pp.rb:18 $ macruby test_pp.rb "ok" zsh: segmentation fault macruby test_pp.rb }}} BackTrace: {{{ $ DYLD_LIBRARY_PATH=. gdb --args ./macruby -I./lib ~/tmp/test_pp.rb Program received signal EXC_BAD_ACCESS, Could not access memory. Reason: KERN_PROTECTION_FAILURE at address: 0x00007fff5f3ffe80 0x00007fff883cfba0 in __vfprintf () (gdb) bt 20 #0 0x00007fff883cfba0 in __vfprintf () #1 0x00007fff883d5657 in snprintf () #2 0x0000000100153690 in rb_vm_lookup_method2 (klass=0x7fff707cd468, mid=<value temporarily unavailable, due to optimizations>, psel=0x7fff5f400a78, pimp=0x7fff5f400a70, pnode=0x7fff5f400a68) at vm.cpp:2497 #3 0x0000000100147cd8 in rb_vm_get_method (klass=140735080617064, obj=6, mid=12944, scope=<value temporarily unavailable, due to optimizations>) at dispatcher.cpp:1438 #4 0x0000000100049a44 in mnew [inlined] () at /Users/watson/src/macruby- trunk-svn/proc.c:670 #5 0x0000000100049a44 in rb_mod_instance_method (mod=140735080617064, sel=<value temporarily unavailable, due to optimizations>, vid=<value temporarily unavailable, due to optimizations>) at proc.c:912 #6 0x000000010014a56b in rb_vm_dispatch (_vm=0x100d25070, cache=0x100cd2f40, top=8590749344, self=140735080617064, klass=0x7fff707cd440, sel=0x102e4dc50, block=0x0, opt=0 '\0', argc=<value temporarily unavailable, due to optimizations>, argv=0x7fff5f401800) at dispatcher.cpp:161 #7 0x0000000102d5a9b6 in ?? () #8 0x0000000102d63543 in ?? () #9 0x000000010014a56b in rb_vm_dispatch (_vm=0x100d25070, cache=0x100cc8900, top=8592622816, self=8590749344, klass=0x2000b3300, sel=0x102e8f580, block=0x0, opt=0 '\0', argc=<value temporarily unavailable, due to optimizations>, argv=0x7fff5f402558) at dispatcher.cpp:161 #10 0x0000000102d5a9b6 in ?? () #11 0x0000000102d65d8b in ?? () #12 0x000000010014ca83 in rb_vm_yield_args (_vm=0x100d25070, argc=<value temporarily unavailable, due to optimizations>, argv=0x2000b3300) at dispatcher.cpp:98 #13 0x0000000102d5e992 in ?? () #14 0x0000000102d65efb in ?? () #15 0x000000010014a4bc in rb_vm_dispatch (_vm=0x100d25070, cache=0x100cd39c0, top=8592622816, self=8592622816, klass=0x2000b7080, sel=0x7fff85de4918, block=0x20028e660, opt=2 '\002', argc=<value temporarily unavailable, due to optimizations>, argv=0x7fff5f402e70) at dispatcher.cpp:170 #16 0x0000000102d5a9b6 in ?? () #17 0x0000000102d606f3 in ?? () #18 0x000000010014a56b in rb_vm_dispatch (_vm=0x100d25070, cache=0x100cef800, top=8590887936, self=8592622816, klass=0x2000b7080, sel=0x103101110, block=0x0, opt=0 '\0', argc=<value temporarily unavailable, due to optimizations>, argv=0x7fff5f4047c8) at dispatcher.cpp:161 #19 0x0000000102d5a9b6 in ?? () (More stack frames follow...) }}} -- Ticket URL: <http://www.macruby.org/trac/ticket/1082> MacRuby <http://macruby.org/>