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[Bug c++/82737] [ICE] Compiler segfault on compilation of a certain file (full cause unknown) (file too large for upload, link provided)


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82737

--- Comment #18 from Martin Liška <marxin at gcc dot gnu.org> ---
Created attachment 42562
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=42562&action=edit
Reduce test-case

I've got following test-case that started with r253608:

$ ./xg++ -B. -std=c++1z -mavx512dq -c  /tmp/repro.ii
cc1plus: internal compiler error: Segmentation fault
0x1203f31 crash_signal
        ../../gcc/toplev.c:326
0x1575044 decl_assembler_name(tree_node*)
        ../../gcc/tree.c:672
0x92d913 hash_table<mangled_decl_hash,
xcallocator>::find_slot_with_hash(tree_node* const&, unsigned int,
insert_option)
        ../../gcc/hash-table.h:892
0x929e90 record_mangling(tree_node*, bool)
        ../../gcc/cp/decl2.c:4405
0x989780 mangle_decl(tree_node*)
        ../../gcc/cp/mangle.c:3842
0x1575094 decl_assembler_name(tree_node*)
        ../../gcc/tree.c:673
0xc7e3ed symtab_node::get_comdat_group_id()
        ../../gcc/cgraph.h:215
0xc96888 analyze_functions
        ../../gcc/cgraphunit.c:1081
0xc9bac3 symbol_table::finalize_compilation_unit()
        ../../gcc/cgraphunit.c:2666

$  ./xgcc -v
Using built-in specs.
COLLECT_GCC=./xgcc
Target: x86_64-w64-mingw32
Configured with: ../configure --enable-languages=c,c++ --disable-multilib
--disable-libsanitizer --prefix=/home/marxin/bin/gcc --disable-bootstrap
--target=x86_64-w64-mingw32
Thread model: win32
gcc version 8.0.0 20171010 (experimental) (GCC) 

Which will be probably another problem as you're using GCC 7.2
Nathan can you please take a look?

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