[Bug c++/57102] New: [4.9 Regression] ICE: SIGSEGV in fndecl_declared_return_type with -fcompare-debug

Sun Apr 28 14:23:00 GMT 2013

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57102

             Bug #: 57102
           Summary: [4.9 Regression] ICE: SIGSEGV in
                    fndecl_declared_return_type with -fcompare-debug
    Classification: Unclassified
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: zsojka@seznam.cz

Created attachment 29963
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29963
partially reduced testcase

Might be related to PR57101.

Command line:
$ gcc -O2 -std=gnu++0x -fno-inline -fcompare-debug final.ii

Compiler output:
$ gcc -O2 -std=gnu++0x -fno-inline -fcompare-debug final.ii -wrapper
valgrind,-q,--num-callers=40,--track-origins=yes
final.ii:7:14: warning: inline function 'void* operator new(std::size_t,
void*)' used but never defined [enabled by default]
 inline void* operator new(std::size_t, void* __p) noexcept
              ^
final.ii:310:5: warning: inline function 'constexpr typename
std::__add_ref<typename std::tuple_element<__i, std::tuple<_Elements ...>
>::type>::type std::get(std::tuple<_Elements ...>&) [with long unsigned int __i
= 0ul; _Elements = {std::reference_wrapper<<lambda()> >}; typename
std::__add_ref<typename std::tuple_element<__i, std::tuple<_Elements ...>
>::type>::type = std::reference_wrapper<<lambda()> >&]' used but never defined
[enabled by default]
     get(tuple<_Elements...>& __t) noexcept
     ^
==19688== Invalid read of size 8
==19688==    at 0x5DBFEB: fndecl_declared_return_type(tree_node*)
(decl.c:14388)
==19688==    by 0x690DCC: dump_function_decl(tree_node*, int) (error.c:1416)
==19688==    by 0x692700: decl_as_string(tree_node*, int) (error.c:2642)
==19688==    by 0x739FA2: cxx_printable_name_internal(tree_node*, int, bool)
(tree.c:1953)
==19688==    by 0xC72698: dump_function_header(_IO_FILE*, tree_node*, int)
(tree-pretty-print.c:3138)
==19688==    by 0x950DBF: rest_of_clean_state() (final.c:4455)
==19688==    by 0xAF233E: execute_one_pass(opt_pass*) (passes.c:2337)
==19688==    by 0xAF2764: execute_pass_list(opt_pass*) (passes.c:2389)
==19688==    by 0x86F1B1: expand_function(cgraph_node*) (cgraphunit.c:1640)
==19688==    by 0x870EF6: compile() (cgraphunit.c:1744)
==19688==    by 0x871599: finalize_compilation_unit() (cgraphunit.c:2119)
==19688==    by 0x684E50: cp_write_global_declarations() (decl2.c:4330)
==19688==    by 0xBDD0DC: compile_file() (toplev.c:558)
==19688==    by 0xBDEF07: toplev_main(int, char**) (toplev.c:1872)
==19688==    by 0x5A3C60C: (below main) (in /lib64/libc-2.15.so)
==19688==  Address 0x50 is not stack'd, malloc'd or (recently) free'd
==19688== 
==19688== Invalid read of size 8
==19688==    at 0x5DBFEB: fndecl_declared_return_type(tree_node*)
(decl.c:14388)
==19688==    by 0x690DCC: dump_function_decl(tree_node*, int) (error.c:1416)
==19688==    by 0x692759: decl_as_string_translate(tree_node*, int)
(error.c:2650)
==19688==    by 0x739FA2: cxx_printable_name_internal(tree_node*, int, bool)
(tree.c:1953)
==19688==    by 0x691C52: cp_diagnostic_starter(diagnostic_context*,
diagnostic_info*) (error.c:2989)
==19688==    by 0x136F722: diagnostic_report_diagnostic(diagnostic_context*,
diagnostic_info*) (diagnostic.c:788)
==19688==    by 0x137056F: internal_error(char const*, ...) (diagnostic.c:1126)
==19688==    by 0xBDD06F: crash_signal(int) (toplev.c:333)
==19688==    by 0x5A4FC8F: ??? (in /lib64/libc-2.15.so)
==19688==    by 0x5DBFEA: fndecl_declared_return_type(tree_node*)
(decl.c:14388)
==19688==    by 0x690DCC: dump_function_decl(tree_node*, int) (error.c:1416)
==19688==    by 0x692700: decl_as_string(tree_node*, int) (error.c:2642)
==19688==    by 0x739FA2: cxx_printable_name_internal(tree_node*, int, bool)
(tree.c:1953)
==19688==    by 0xC72698: dump_function_header(_IO_FILE*, tree_node*, int)
(tree-pretty-print.c:3138)
==19688==    by 0x950DBF: rest_of_clean_state() (final.c:4455)
==19688==    by 0xAF233E: execute_one_pass(opt_pass*) (passes.c:2337)
==19688==    by 0xAF2764: execute_pass_list(opt_pass*) (passes.c:2389)
==19688==    by 0x86F1B1: expand_function(cgraph_node*) (cgraphunit.c:1640)
==19688==    by 0x870EF6: compile() (cgraphunit.c:1744)
==19688==    by 0x871599: finalize_compilation_unit() (cgraphunit.c:2119)
==19688==    by 0x684E50: cp_write_global_declarations() (decl2.c:4330)
==19688==    by 0xBDD0DC: compile_file() (toplev.c:558)
==19688==    by 0xBDEF07: toplev_main(int, char**) (toplev.c:1872)
==19688==    by 0x5A3C60C: (below main) (in /lib64/libc-2.15.so)
==19688==  Address 0x50 is not stack'd, malloc'd or (recently) free'd
==19688== 
==19688== 
==19688== Process terminating with default action of signal 11 (SIGSEGV)
==19688==  Access not within mapped region at address 0x50
==19688==    at 0x5DBFEB: fndecl_declared_return_type(tree_node*)
(decl.c:14388)
==19688==    by 0x690DCC: dump_function_decl(tree_node*, int) (error.c:1416)
==19688==    by 0x692759: decl_as_string_translate(tree_node*, int)
(error.c:2650)
==19688==    by 0x739FA2: cxx_printable_name_internal(tree_node*, int, bool)
(tree.c:1953)
==19688==    by 0x691C52: cp_diagnostic_starter(diagnostic_context*,
diagnostic_info*) (error.c:2989)
==19688==    by 0x136F722: diagnostic_report_diagnostic(diagnostic_context*,
diagnostic_info*) (diagnostic.c:788)
==19688==    by 0x137056F: internal_error(char const*, ...) (diagnostic.c:1126)
==19688==    by 0xBDD06F: crash_signal(int) (toplev.c:333)
==19688==    by 0x5A4FC8F: ??? (in /lib64/libc-2.15.so)
==19688==    by 0x5DBFEA: fndecl_declared_return_type(tree_node*)
(decl.c:14388)
==19688==    by 0x690DCC: dump_function_decl(tree_node*, int) (error.c:1416)
==19688==    by 0x692700: decl_as_string(tree_node*, int) (error.c:2642)
==19688==    by 0x739FA2: cxx_printable_name_internal(tree_node*, int, bool)
(tree.c:1953)
==19688==    by 0xC72698: dump_function_header(_IO_FILE*, tree_node*, int)
(tree-pretty-print.c:3138)
==19688==    by 0x950DBF: rest_of_clean_state() (final.c:4455)
==19688==    by 0xAF233E: execute_one_pass(opt_pass*) (passes.c:2337)
==19688==    by 0xAF2764: execute_pass_list(opt_pass*) (passes.c:2389)
==19688==    by 0x86F1B1: expand_function(cgraph_node*) (cgraphunit.c:1640)
==19688==    by 0x870EF6: compile() (cgraphunit.c:1744)
==19688==    by 0x871599: finalize_compilation_unit() (cgraphunit.c:2119)
==19688==    by 0x684E50: cp_write_global_declarations() (decl2.c:4330)
==19688==    by 0xBDD0DC: compile_file() (toplev.c:558)
==19688==    by 0xBDEF07: toplev_main(int, char**) (toplev.c:1872)
==19688==    by 0x5A3C60C: (below main) (in /lib64/libc-2.15.so)
==19688==  If you believe this happened as a result of a stack
==19688==  overflow in your program's main thread (unlikely but
==19688==  possible), you can try to increase the size of the
==19688==  main thread stack using the --main-stacksize= flag.
==19688==  The main thread stack size used in this run was 16777216.
gcc: internal compiler error: Segmentation fault (program valgrind)

Tested revisions:
r198366 - crash
4.8 r198018 - -fcompare-debug failure
4.7 r198018 - ICE: Error reporting routines re-entered.