https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79579

            Bug ID: 79579
           Summary: [5/6/7 Regression] ICE in ipa_write_node_info
                    (ipa-prop.c:4931)
           Product: gcc
           Version: unknown
            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: jamborm at gcc dot gnu.org
  Target Milestone: ---

Starting from my commit r219005, we ICE on:

$ gcc /home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/ipa/pr59610.c -O1 -flto


/home/marxin/Programming/gcc/gcc/testsuite/gcc.dg/ipa/pr59610.c:11:1: internal
compiler error: Segmentation fault
 }
 ^
0xa85d9f crash_signal
        ../../gcc/toplev.c:337
0x8f73b8 vec<ipa_edge_args, va_gc, vl_embed>::operator[](unsigned int)
        ../../gcc/vec.h:733
0x8f73b8 ipa_write_node_info
        ../../gcc/ipa-prop.c:4931
0x8f73b8 ipa_prop_write_jump_functions()
        ../../gcc/ipa-prop.c:5067
0x9cada8 ipa_write_summaries_2
        ../../gcc/passes.c:2609
0x9cc251 ipa_write_summaries_1
        ../../gcc/passes.c:2640
0x9cc251 ipa_write_summaries()
        ../../gcc/passes.c:2702
0x7594bc ipa_passes
        ../../gcc/cgraphunit.c:2368
0x7594bc symbol_table::compile()
        ../../gcc/cgraphunit.c:2462
0x75b194 symbol_table::compile()
        ../../gcc/cgraphunit.c:2595
0x75b194 symbol_table::finalize_compilation_unit()
        ../../gcc/cgraphunit.c:2621

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