#1350: Segfault occurs when invoked an alias within some threads ----------------------------------+----------------------------------------- Reporter: watson1978@… | Owner: lsansonetti@… Type: defect | Status: new Priority: blocker | Milestone: Component: MacRuby | Keywords: ----------------------------------+----------------------------------------- Test Script: {{{ #!ruby class Foo def bar(str) puts str end end f1 = Foo.new f2 = f1.clone th = Thread.new { 1000.times do |i| f1.instance_eval{ alias :"f1_#{i}" :bar } end } 1000.times do |i| f2.instance_eval{ alias :"f2_#{i}" :bar } end th.join f1.f1_99 "f1" f2.f2_10 "f2" }}} BackTrace 1: {{{ Program received signal EXC_BAD_ACCESS, Could not access memory. Reason: KERN_INVALID_ADDRESS at address: 0x0000000000000000 0x00007fff83cc3c00 in strlen () (gdb) bt #0 0x00007fff83cc3c00 in strlen () #1 0x000000010014714b in vm_alias (outer=8590023776, name=13096, def=12368) at vm.cpp:1575 #2 0x000000010014760e in rb_vm_alias2 (outer=8590023776, name=8590664256, def=8590082816, dynamic_class=1 '\001') at vm.cpp:1614 #3 0x0000000101601689 in ?? () #4 0x0000000100135ddb in __rb_vm_bcall [inlined] () at /Users/watson/src /macruby-master/dispatcher.cpp:98 #5 0x0000000100135ddb in vm_block_eval [inlined] () at /Users/watson/src /macruby-master/dispatcher.cpp:1221 #6 0x0000000100135ddb in rb_vm_yield_under () at dispatcher.cpp:1321 #7 0x00000001000db958 in specific_eval (argc=0, argv=0x0, klass=8590023776, self=8590023136) at vm_eval.c:339 #8 0x00000001000dbee3 in rb_obj_instance_eval_imp (self=8590023136, sel=0x100fde130, top=8590062336, argc=0, argv=0x0) at vm_eval.c:507 #9 0x000000010012e366 in ruby_dispatch [inlined] () at /Users/watson/src /macruby-master/dispatcher.cpp:457 #10 0x000000010012e366 in rb_vm_dispatch () at dispatcher.cpp:872 #11 0x0000000101600984 in ?? () #12 0x00000001016012b3 in ?? () #13 0x0000000100134ccb in __rb_vm_bcall [inlined] () at /Users/watson/src /macruby-master/dispatcher.cpp:100 #14 0x0000000100134ccb in vm_block_eval [inlined] () at /Users/watson/src /macruby-master/dispatcher.cpp:1221 #15 0x0000000100134ccb in rb_vm_yield_args () at dispatcher.cpp:1278 #16 0x00000001000db2fd in rb_vm_yield (argc=1, argv=0x7fff5fbfcc48) at vm.h:697 #17 0x00000001000db2d0 in rb_yield (val=141) at vm_eval.c:183 #18 0x000000010004d1da in int_dotimes (num=4001, sel=0x100fe7350) at numeric.c:3241 #19 0x000000010012e8b4 in __rb_vm_rcall [inlined] () at /Users/watson/src /macruby-master/dispatcher.cpp:159 #20 0x000000010012e8b4 in ruby_dispatch [inlined] () at /Users/watson/src /macruby-master/dispatcher.cpp:466 #21 0x000000010012e8b4 in rb_vm_dispatch () at dispatcher.cpp:872 #22 0x0000000101600984 in ?? () #23 0x000000010160039d in ?? () #24 0x000000010014a072 in rb_vm_run (fname=0x2000a7bc0 "/Users/watson/tmp/t.rb", node=0x2000154a0, binding=0x0, inside_eval=false) at vm.cpp:4115 #25 0x000000010002898b in ruby_run_node (n=0x2000154a0) at eval.c:211 #26 0x0000000100000be3 in main (argc=2, argv=0x100f1c040, envp=0x7fff5fbfde58) at main.cpp:40 (gdb) }}} BackTrace 2: {{{ Program received signal EXC_BAD_ACCESS, Could not access memory. Reason: 13 at address: 0x0000000000000000 [Switching to process 24189 thread 0x1707] 0x0000000101600906 in ?? () (gdb) bt #0 0x0000000101600906 in ?? () #1 0x00000001016014b3 in ?? () #2 0x0000000100134ccb in __rb_vm_bcall [inlined] () at /Users/watson/src /macruby-master/dispatcher.cpp:100 #3 0x0000000100134ccb in vm_block_eval [inlined] () at /Users/watson/src /macruby-master/dispatcher.cpp:1221 #4 0x0000000100134ccb in rb_vm_yield_args () at dispatcher.cpp:1278 #5 0x00000001000db2fd in rb_vm_yield (argc=1, argv=0x10171f928) at vm.h:697 #6 0x00000001000db2d0 in rb_yield (val=49) at vm_eval.c:183 #7 0x000000010004d1da in int_dotimes (num=4001, sel=0x100fe7350) at numeric.c:3241 #8 0x000000010012e8b4 in __rb_vm_rcall [inlined] () at /Users/watson/src /macruby-master/dispatcher.cpp:159 #9 0x000000010012e8b4 in ruby_dispatch [inlined] () at /Users/watson/src /macruby-master/dispatcher.cpp:466 #10 0x000000010012e8b4 in rb_vm_dispatch () at dispatcher.cpp:872 #11 0x0000000101600984 in ?? () #12 0x0000000101601171 in ?? () #13 0x0000000100132c67 in __rb_vm_bcall [inlined] () at /Users/watson/src /macruby-master/dispatcher.cpp:98 #14 0x0000000100132c67 in vm_block_eval [inlined] () at /Users/watson/src /macruby-master/dispatcher.cpp:1221 #15 0x0000000100132c67 in rb_vm_block_eval (b=0x200015220, argc=0, argv=0x0) at dispatcher.cpp:1228 #16 0x000000010014d093 in rb_vm_thread_run (thread=8590021024) at vm.cpp:4856 #17 0x00007fff83cf9fd6 in _pthread_start () #18 0x00007fff83cf9e89 in thread_start () (gdb) }}} -- Ticket URL: <http://www.macruby.org/trac/ticket/1350> MacRuby <http://macruby.org/>