[Bug other/65228] New: libcc1: ICE: expected tree that contains âdecl minimalâ structure, have âerror_markâ in start_decl

["jan.kratochvil at redhat dot com" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65228

            Bug ID: 65228
           Summary: libcc1: ICE: expected tree that contains âdecl
                    minimalâ structure, have âerror_markâ in start_decl
           Product: gcc
           Version: 5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: other
          Assignee: unassigned at gcc dot gnu.org
          Reporter: jan.kratochvil at redhat dot com
                CC: pmuldoon at redhat dot com
              Host: x86_64-linux-gnu
            Target: x86_64-linux-gnu

FAIL: gcc (GCC) 5.0.0 20150226 (experimental)

PATH="/home/jkratoch/redhat/gcchead-root/bin:$PATH"
LD_LIBRARY_PATH=/home/jkratoch/redhat/gcchead-root/lib64
/home/jkratoch/redhat/gdb-clean/gdb/gdb -nx gdb -ex start -ex 'compile code -r
__auto_type qwe = def'

gdb command line:1:19: error: âdefâ undeclared here (not in a function)
*** WARNING *** there are active plugins, do not report this as a bug unless
you can reproduce it without enabling any plugins.
Event                            | Plugins
PLUGIN_PRE_GENERICIZE            | libcc1plugin
PLUGIN_GGC_MARKING               | libcc1plugin
PLUGIN_PRAGMAS                   | libcc1plugin
gdb command line:2:1: internal compiler error: tree check: expected tree that
contains âdecl minimalâ structure, have âerror_markâ in start_decl, at
c/c-decl.c:4469
0xd41bd4 tree_contains_struct_check_failed(tree_node const*,
tree_node_structure_enum, char const*, int, char const*)
    /home/jkratoch/redhat/gcchead/gcc/tree.c:9462
0x605649 contains_struct_check(tree_node*, tree_node_structure_enum, char
const*, int, char const*)
    /home/jkratoch/redhat/gcchead/gcc/tree.h:2960
0x605649 start_decl(c_declarator*, c_declspecs*, bool, tree_node*)
    /home/jkratoch/redhat/gcchead/gcc/c/c-decl.c:4469
0x640dec c_parser_declaration_or_fndef
    /home/jkratoch/redhat/gcchead/gcc/c/c-parser.c:1802
0x65d317 c_parser_external_declaration
    /home/jkratoch/redhat/gcchead/gcc/c/c-parser.c:1452
0x65dbd9 c_parser_translation_unit
    /home/jkratoch/redhat/gcchead/gcc/c/c-parser.c:1339
0x65dbd9 c_parse_file()
    /home/jkratoch/redhat/gcchead/gcc/c/c-parser.c:15418
0x6b4062 c_common_parse_file()
    /home/jkratoch/redhat/gcchead/gcc/c-family/c-opts.c:1057
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
Compilation failed.
(gdb) _


For gcc-5.0.0-0.15.fc23.x86_64 the same reproducer hangs due to FD not closed
by the driver but that is a different bug.

Filing as a tracker, I guess it is libcc1 specific so we should fix it.