[Bug c++/84973] New: internal compiler error: Segmentation fault (tree_check()/ultimate_transparent_alias_target())

[vegard.nossum at oracle dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84973

            Bug ID: 84973
           Summary: internal compiler error: Segmentation fault
                    (tree_check()/ultimate_transparent_alias_target())
           Product: gcc
           Version: 8.0.1
            Status: UNCONFIRMED
          Keywords: ice-on-invalid-code
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: vegard.nossum at oracle dot com
                CC: webrown.cpp at gmail dot com
  Target Milestone: ---

Input:

template <int> void a() {
  typedef struct {
    void b() try { b; } catch (short) {
    }
  } c;
}

Output:

$ cc1plus 
 void a() void a()::<unnamed struct>::b()
<stdin>: At global scope:
<stdin>:6:1: internal compiler error: Segmentation fault
0x3152ce9 crash_signal
        /home/vegard/git/gcc/gcc/toplev.c:325
0x41a568c tree_check(tree_node*, char const*, int, char const*, tree_code)
        /home/vegard/git/gcc/gcc/tree.h:3131
0x41a568c ultimate_transparent_alias_target
        /home/vegard/git/gcc/gcc/varasm.c:1285
0x41ab7a7 notice_global_symbol(tree_node*)
        /home/vegard/git/gcc/gcc/varasm.c:1670
0x1995af3 cgraph_node::finalize_function(tree_node*, bool)
        /home/vegard/git/gcc/gcc/cgraphunit.c:452
0x128999b expand_or_defer_fn(tree_node*)
        /home/vegard/git/gcc/gcc/cp/semantics.c:4253
0xc6c3f8 c_parse_final_cleanups()
        /home/vegard/git/gcc/gcc/cp/decl2.c:4896
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.

Version:

GNU C++14 (GCC) version 8.0.1 20180306 (experimental) (x86_64-pc-linux-gnu)