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From: "danglin at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug libstdc++/40094] FAIL: ext/throw_allocator/deallocate_global.cc execution test Date: Fri, 22 May 2009 01:30:00 -0000 [thread overview] Message-ID: <20090522013037.9439.qmail@sourceware.org> (raw) In-Reply-To: <bug-40094-276@http.gcc.gnu.org/bugzilla/> ------- Comment #11 from danglin at gcc dot gnu dot org 2009-05-22 01:30 ------- The first and second calls to delete free the same node: Breakpoint 4, operator delete (p=0x800000010000e530) Breakpoint 4, operator delete (p=0x800000010000e530) Breakpoint 4, operator delete (p=0x800000010000e4f8) Both the first and second calls appear to come from the same hunk of code: // Erase without rebalancing. while (__x != 0) { _M_erase(_S_right(__x)); _Link_type __y = _S_left(__x); _M_destroy_node(__x); __x = __y; } The first time in, __y seems to point to garbage: 968 _M_destroy_node(__x); (gdb) p __y $13 = (_Link_type) 0xc000000000027eb3 (gdb) p *__y $8 = {<std::_Rb_tree_node_base> = {_M_color = 22266430, _M_parent = 0x37de3f0173c23f, _M_left = 0xe137de02802b7eef, _M_right = 0xff73db3d81343f08}, _M_value_field = { first = 0x3417004273da3d, second = {first = 10464070018962284560, second = 11029061579702265872}}} (gdb) p *__x $9 = {<std::_Rb_tree_node_base> = {_M_color = std::_S_black, _M_parent = 0x8000000100002940, _M_left = 0x0, _M_right = 0x0}, _M_value_field = {first = 0x800000010000e4f8, second = {first = 0, second = 35}}} __y points to something in the dynamic loader: (gdb) info shared >From To Syms Read Shared Object Library 0xc00000000000add0 0xc0000000000425e4 Yes /usr/lib/pa20_64/dld.sl This is the backtrace for the first call: 51 printf("operator delete is called \n"); (gdb) bt #0 operator delete (p=0x800000010000e530) at deallocate_global.cc:51 #1 0x400000000000de94 in __gnu_cxx::new_allocator<std::_Rb_tree_node<std::pair<void* const, std::pair<unsigned long, unsigned long> > > >::deallocate ( this=0x8000000100002938, __p=0x800000010000e530) at /test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/include/ext/new_allocator.h:95 #2 0x400000000000d904 in std::_Rb_tree<void*, std::pair<void* const, std::pair<unsigned long, unsigned long> >, std::_Select1st<std::pair<void* const, std::pair<unsigned long, unsigned long> > >, std::less<void*>, std::allocator<std::pair<void* const, std::pair<unsigned long, unsigned long> > > >::_M_put_node ( this=0x8000000100002938, __p=0x800000010000e530) at /test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/include/bits/stl_tree.h:363 #3 0x400000000000cf38 in std::_Rb_tree<void*, std::pair<void* const, std::pair<unsigned long, unsigned long> >, std::_Select1st<std::pair<void* const, std::pair<unsigned long, unsigned long> > >, std::less<void*>, std::allocator<std::pair<void* const, std::pair<unsigned long, unsigned long> > > >::_M_destroy_node (this=0x8000000100002938, __p=0x800000010000e530) at /test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/include/bits/stl_tree.h:384 #4 0x400000000000c124 in std::_Rb_tree<void*, std::pair<void* const, std::pair<unsigned long, unsigned long> >, std::_Select1st<std::pair<void* const, std::pair<unsigned long, unsigned long> > >, std::less<void*>, std::allocator<std::pair<void* const, std::pair<unsigned long, unsigned long> > > >::_M_erase ( this=0x8000000100002938, __x=0x800000010000e530) at /test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/include/bits/stl_tree.h:968 #5 0x400000000000b440 in ~_Rb_tree (this=0x8000000100002938) at /test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/include/bits/stl_tree.h:614 #6 0x400000000000a1d8 in ~map (this=0x8000000100002938) at /test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/include/bits/stl_map.h:87 #7 0x400000000000a228 in __tcf_0 () at /test/gnu/gcc/objdir/hppa64-hp-hpux11.11/libstdc++-v3/include/ext/throw_allocator.h:227 #8 0x800003fffdcd75d8 in exit () from /lib/pa20_64/libc.2 #9 0xc00000000000b394 in UT_exit () from /usr/lib/pa20_64/dld.sl #10 0xc00000000000b3b4 in exit () from /usr/lib/pa20_64/dld.sl #11 0xc00000000000b478 in $START$ () from /usr/lib/pa20_64/dld.sl -- danglin at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Target Milestone|4.5.0 |--- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40094
next prev parent reply other threads:[~2009-05-22 1:30 UTC|newest] Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top 2009-05-10 19:01 [Bug libstdc++/40094] New: " danglin at gcc dot gnu dot org 2009-05-10 20:17 ` [Bug libstdc++/40094] " paolo dot carlini at oracle dot com 2009-05-17 15:28 ` paolo dot carlini at oracle dot com 2009-05-17 23:20 ` dave at hiauly1 dot hia dot nrc dot ca 2009-05-21 0:49 ` danglin at gcc dot gnu dot org 2009-05-21 9:15 ` paolo dot carlini at oracle dot com 2009-05-22 0:54 ` danglin at gcc dot gnu dot org 2009-05-22 1:07 ` paolo dot carlini at oracle dot com 2009-05-22 1:15 ` paolo dot carlini at oracle dot com 2009-05-22 1:29 ` paolo at gcc dot gnu dot org 2009-05-22 1:29 ` paolo dot carlini at oracle dot com 2009-05-22 1:30 ` danglin at gcc dot gnu dot org [this message] 2009-05-22 1:33 ` paolo at gcc dot gnu dot org 2009-05-22 1:42 ` danglin at gcc dot gnu dot org 2009-05-28 18:53 ` bkoz at gcc dot gnu dot org 2009-05-28 18:53 ` bkoz at gcc dot gnu dot org 2009-05-28 19:59 ` paolo dot carlini at oracle dot com 2009-05-28 20:09 ` paolo dot carlini at oracle dot com 2009-05-28 20:16 ` dave at hiauly1 dot hia dot nrc dot ca 2009-05-28 22:26 ` paolo dot carlini at oracle dot com 2009-05-29 1:13 ` bkoz at gcc dot gnu dot org 2009-05-29 1:20 ` bkoz at gcc dot gnu dot org 2009-07-30 20:23 ` danglin at gcc dot gnu dot org [not found] <bug-40094-4@http.gcc.gnu.org/bugzilla/> 2023-05-16 19:41 ` pinskia at gcc dot gnu.org 2023-05-16 20:38 ` redi at gcc dot gnu.org 2023-05-16 20:47 ` danglin at gcc dot gnu.org 2023-05-16 20:55 ` redi at gcc dot gnu.org
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