[Bug c++/100129] [modules] ICE free(): invalid pointer

["pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100129

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Add --param=ggc-min-expand=1 we get:
hash table checking failed: equal operator returns true for a pair of values
with a different hash value
In file included from /home/apinski/upstream-gcc/include/c++/12.0.0/future:44:
/home/apinski/upstream-gcc/include/c++/12.0.0/bits/atomic_futex.h:76:5:
internal compiler error: in hashtab_chk_error, at hash-table.c:137
   76 |     atomic<unsigned> _M_data;
      |     ^~~~~~
0x9bab97 hashtab_chk_error()
        /home/apinski/src/upstream-gcc/gcc/gcc/hash-table.c:137
0xbd7e85 hash_table<spec_hasher, false, xcallocator>::verify(spec_entry*
const&, unsigned int)
        /home/apinski/src/upstream-gcc/gcc/gcc/hash-table.h:1036
0xbd840c hash_table<spec_hasher, false,
xcallocator>::find_slot_with_hash(spec_entry* const&, unsigned int,
insert_option)
        /home/apinski/src/upstream-gcc/gcc/gcc/hash-table.h:971
0xb93d0b match_mergeable_specialization(bool, spec_entry*)
        /home/apinski/src/upstream-gcc/gcc/gcc/cp/pt.c:30400
0xb0531c trees_in::key_mergeable(int, merge_kind, tree_node*, tree_node*,
tree_node*, tree_node*, bool)
        /home/apinski/src/upstream-gcc/gcc/gcc/cp/module.cc:10683
0xb0925e trees_in::decl_value()
        /home/apinski/src/upstream-gcc/gcc/gcc/cp/module.cc:7911
0xb02147 trees_in::tree_node(bool)
        /home/apinski/src/upstream-gcc/gcc/gcc/cp/module.cc:9164
0xb0864b module_state::read_cluster(unsigned int)
        /home/apinski/src/upstream-gcc/gcc/gcc/cp/module.cc:14830
0xb08be5 module_state::load_section(unsigned int, binding_slot*)
        /home/apinski/src/upstream-gcc/gcc/gcc/cp/module.cc:18101
0xb08d9e lazy_load_binding(unsigned int, tree_node*, tree_node*, binding_slot*)
        /home/apinski/src/upstream-gcc/gcc/gcc/cp/module.cc:18792
0xb1abed name_lookup::search_namespace_only(tree_node*)
        /home/apinski/src/upstream-gcc/gcc/gcc/cp/name-lookup.c:927
0xb1c0f3 name_lookup::search_unqualified(tree_node*, cp_binding_level*)
        /home/apinski/src/upstream-gcc/gcc/gcc/cp/name-lookup.c:1157
0xb1de2d lookup_name(tree_node*, LOOK_where, LOOK_want)
        /home/apinski/src/upstream-gcc/gcc/gcc/cp/name-lookup.c:7739
0xb2f229 lookup_name(tree_node*, LOOK_want)
        /home/apinski/src/upstream-gcc/gcc/gcc/cp/name-lookup.h:401
0xb2f229 cp_parser_lookup_name
        /home/apinski/src/upstream-gcc/gcc/gcc/cp/parser.c:30528
0xb5adf8 cp_parser_template_name
        /home/apinski/src/upstream-gcc/gcc/gcc/cp/parser.c:18539
0xb5b409 cp_parser_template_id
        /home/apinski/src/upstream-gcc/gcc/gcc/cp/parser.c:18143
0xb5bd6b cp_parser_class_name
        /home/apinski/src/upstream-gcc/gcc/gcc/cp/parser.c:25640
0xb5271e cp_parser_qualifying_entity
        /home/apinski/src/upstream-gcc/gcc/gcc/cp/parser.c:7061
0xb5271e cp_parser_nested_name_specifier_opt
        /home/apinski/src/upstream-gcc/gcc/gcc/cp/parser.c:6743
Please submit a full bug report,
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Please include the complete backtrace with any bug report.

I am going to assume this is the same bug when I reducing it but if it is not
then I will deal with it later.