[Bug ipa/88016] New: [9 Regression] ICE in gt_ggc_m_S, at ggc-page.c:1474 since r262375

[marxin at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88016

            Bug ID: 88016
           Summary: [9 Regression] ICE in gt_ggc_m_S, at ggc-page.c:1474
                    since r262375
           Product: gcc
           Version: 9.0
            Status: UNCONFIRMED
          Keywords: ice-on-valid-code
          Severity: normal
          Priority: P3
         Component: ipa
          Assignee: unassigned at gcc dot gnu.org
          Reporter: marxin at gcc dot gnu.org
                CC: marxin at gcc dot gnu.org
  Target Milestone: ---

Started with my commit:

$ gcc /home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/pr84100.c --param
ggc-min-expand=0 --param ggc-min-heapsize=0
/home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/pr84100.c: In function ‘foo’:
/home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/pr84100.c:15:1: internal
compiler error: in gt_ggc_m_S, at ggc-page.c:1474
   15 | }
      | ^
0x5f4fc3 gt_ggc_m_S(void const*)
        /home/marxin/Programming/gcc/gcc/ggc-page.c:1474
0xabdc57 gt_ggc_mx_cl_optimization(void*)
        /dev/shm/objdir/gcc/gtype-desc.c:1471
0x7b52de gt_ggc_mx_lang_tree_node(void*)
        ./gt-c-c-decl.h:487
0x7b4e28 gt_ggc_mx_lang_tree_node(void*)
        ./gt-c-c-decl.h:294
0xa54a15 ggc_mark_root_tab
        /home/marxin/Programming/gcc/gcc/ggc-common.c:77
0xa54c2c ggc_mark_roots()
        /home/marxin/Programming/gcc/gcc/ggc-common.c:94
0x88f885 ggc_collect()
        /home/marxin/Programming/gcc/gcc/ggc-page.c:2201
0x912851 cgraph_node::finalize_function(tree_node*, bool)
        /home/marxin/Programming/gcc/gcc/cgraphunit.c:492
0x7b135f finish_function()
        /home/marxin/Programming/gcc/gcc/c/c-decl.c:9596
0x81084c c_parser_declaration_or_fndef
        /home/marxin/Programming/gcc/gcc/c/c-parser.c:2369
0x81785f c_parser_external_declaration
        /home/marxin/Programming/gcc/gcc/c/c-parser.c:1651
0x8180a9 c_parser_translation_unit
        /home/marxin/Programming/gcc/gcc/c/c-parser.c:1532
0x8180a9 c_parse_file()
        /home/marxin/Programming/gcc/gcc/c/c-parser.c:19609
0x86aab0 c_common_parse_file()
        /home/marxin/Programming/gcc/gcc/c-family/c-opts.c:1150