http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57102
Uros Bizjak <ubizjak at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2013-05-04
Ever Confirmed|0 |1
--- Comment #1 from Uros Bizjak <ubizjak at gmail dot com> 2013-05-04 18:48:32
UTC ---
Confirmed, the segfault can be triggered with:
~/gcc-build/gcc/cc1plus -O2 -std=gnu++11 -fno-inline -fdump-final-insns=aaa
The important part is "-fdump-final-insns=...".
...
Performing interprocedural optimizations
<*free_lang_data> <visibility> <early_local_cleanups> <*free_inline_summary>
<whole-program> <profile_estimate> <cp> <inline> <pure-const>
<static-var>Assembling functions:
constexpr _Tp&& std::forward(typename std::remove_reference<_Tp>::type&) [with
_Tp = <lambda()>; typename std::remove_reference<_Tp>::type = <lambda()>]
constexpr typename std::remove_reference<_Tp>::type&& std::move(_Tp&&) [with
_Tp = <lambda()>&; typename std::remove_reference<_Tp>::type = <lambda()>]
std::_Sp_counted_ptr_inplace<_Tp, _Alloc, _Lp>::_Impl::_Impl(_Alloc) [with _Tp
= std::__future_base::_Task_state<<lambda()>, __gnu_test::SimpleAllocator<int>,
int()>; _Alloc = __gnu_test::SimpleAllocator<int>; __gnu_cxx::_Lock_policy _Lp
= (__gnu_cxx::_Lock_policy)2u] std::function<_Res(_ArgTypes
...)>::function(_Functor) [with _Functor =
std::reference_wrapper<std::_Bind_simple<std::reference_wrapper<<lambda()> >()>
>; <template-parameter-2-2> = void; _Res = int; _ArgTypes = {}]
final.ii:765:61: internal compiler error: Segmentation fault
packaged_task<int()> p(allocator_arg, a, []() { return 1; });
^
0xa94bff crash_signal
../../gcc-svn/trunk/gcc/toplev.c:333
0x54160b fndecl_declared_return_type(tree_node*)
../../gcc-svn/trunk/gcc/cp/decl.c:14388
0x5f620c dump_function_decl
../../gcc-svn/trunk/gcc/cp/error.c:1416
0x5f7b40 decl_as_string(tree_node*, int)
../../gcc-svn/trunk/gcc/cp/error.c:2642
0x69f562 cxx_printable_name_internal
../../gcc-svn/trunk/gcc/cp/tree.c:1953
0xa95312 announce_function(tree_node*)
../../gcc-svn/trunk/gcc/toplev.c:229
0x7c26f6 expand_function
../../gcc-svn/trunk/gcc/cgraphunit.c:1610
0x7c44d6 expand_all_functions
../../gcc-svn/trunk/gcc/cgraphunit.c:1744
0x7c44d6 compile()
../../gcc-svn/trunk/gcc/cgraphunit.c:2042
0x7c4b79 finalize_compilation_unit()
../../gcc-svn/trunk/gcc/cgraphunit.c:2119
0x5ea280 cp_write_global_declarations()
../../gcc-svn/trunk/gcc/cp/decl2.c:4330
Please submit a full bug report,
It looks that compilation fails during IPO, trying to dump fndecl.
gdb says:
Program received signal SIGSEGV, Segmentation fault.
0x000000000054160b in fndecl_declared_return_type (fn=0x7ffff165ad00) at
../../gcc-svn/trunk/gcc/cp/decl.c:14388
14388 ->x_auto_return_pattern);
(gdb) bt
#0 0x000000000054160b in fndecl_declared_return_type (fn=0x7ffff165ad00) at
../../gcc-svn/trunk/gcc/cp/decl.c:14388
#1 0x00000000005f620d in dump_function_decl (t=0x7ffff165ad00, flags=4) at
../../gcc-svn/trunk/gcc/cp/error.c:1416
#2 0x00000000005f7b41 in decl_as_string (decl=0x7ffff165ad00, flags=4) at
../../gcc-svn/trunk/gcc/cp/error.c:2642
#3 0x000000000069f563 in cxx_printable_name_internal (decl=0x7ffff165ad00,
v=2, translate=<optimized out>) at ../../gcc-svn/trunk/gcc/cp/tree.c:1953
#4 0x0000000000b2a8f9 in dump_function_header (dump_file=0x17cb5a0,
fdecl=0x7ffff165ad00, flags=0) at
../../gcc-svn/trunk/gcc/tree-pretty-print.c:3138
#5 0x000000000087f4b1 in rest_of_clean_state () at
../../gcc-svn/trunk/gcc/final.c:4455
#6 0x00000000009f846f in execute_one_pass (pass=pass@entry=0x1639380
<pass_clean_state>) at ../../gcc-svn/trunk/gcc/passes.c:2337
(gdb) list
14383 fndecl_declared_return_type (tree fn)
14384 {
14385 fn = STRIP_TEMPLATE (fn);
14386 if (FNDECL_USED_AUTO (fn))
14387 return (DECL_STRUCT_FUNCTION (fn)->language
14388 ->x_auto_return_pattern);
14389 else
14390 return TREE_TYPE (TREE_TYPE (fn));
14391 }
14392
