[Bug regression/52834] New: [4.7 Regression] ICE (segfault) in check_tag_decl

[doko at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52834

             Bug #: 52834
           Summary: [4.7 Regression] ICE (segfault) in check_tag_decl
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: regression
        AssignedTo: unassig...@gcc.gnu.org
        ReportedBy: d...@gcc.gnu.org


Created attachment 27068
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27068
preprocessed source

seen with the 4.7.0 release (x86_64-linux-gnu), works with 4.6.3

$ g++ -c -g ProcessDies.ii   In file included from
/usr/include/libsysactivity/global.h:56:0,
                 from /usr/include/libsysactivity/libsysactivity.h:122,
                 from
/home/packages/tmp/sentinella-0.9.0/src/Conditions/ProcessDies.h:24,
                 from
/home/packages/tmp/sentinella-0.9.0/src/Conditions/ProcessDies.cpp:21:
/usr/include/libsysactivity/process.h:40:1: internal compiler error:
Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.

Program received signal SIGSEGV, Segmentation fault.
0x00000000004fed50 in check_tag_decl(cp_decl_specifier_seq*) ()
(gdb) bt
#0  0x00000000004fed50 in check_tag_decl(cp_decl_specifier_seq*) ()
#1  0x000000000050f0e6 in shadow_tag(cp_decl_specifier_seq*) ()
#2  0x000000000056bfdd in ?? ()
#3  0x0000000000571238 in ?? ()
#4  0x000000000057547c in ?? ()
#5  0x0000000000574118 in ?? ()
#6  0x0000000000574458 in ?? ()
#7  0x00000000005754f8 in ?? ()
#8  0x0000000000574118 in ?? ()
#9  0x00000000005759e3 in c_parse_file() ()
#10 0x0000000000605c05 in c_common_parse_file() ()
#11 0x000000000086fae0 in toplev_main(int, char**) ()
#12 0x00007ffff5ddcead in __libc_start_main () from
/lib/x86_64-linux-gnu/libc.so.6
#13 0x00000000004e8181 in _start ()