[Bug c++/99426] [modules] failed to read compiled module cluster 1186: Bad file data

["alexander.lelyakin at googlemail dot com" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99426

--- Comment #1 from Alexander Lelyakin <alexander.lelyakin at googlemail dot com> ---
in version 20210308 diagnostic changed:
In file included from /usr/local/include/c++/11.0.1/iomanip:45:
/usr/local/include/c++/11.0.1/bits/quoted_string.h: In destructor ‘constexpr
std::allocator< <template-parameter-1-1> >::~allocator() [with _Tp =
char32_t]’:
/usr/local/include/c++/11.0.1/bits/quoted_string.h:69:29: internal compiler
error: tree check: expected template_decl, have function_decl in decl_value, at
cp/module.cc:7938
   69 |       struct _Quoted_string<basic_string_view<_CharT, _Traits>, _CharT>
      |                             ^~~~~~~~~~~~~~~~~
0x875ba8 tree_check_failed(tree_node const*, char const*, int, char const*,
...)
        ../../gcc/gcc/tree.c:9814
0x6e61c9 tree_check(tree_node*, char const*, int, char const*, tree_code)
        ../../gcc/gcc/tree.h:3353
0x6e61c9 trees_in::decl_value()
        ../../gcc/gcc/cp/module.cc:7938
0xa66d17 trees_in::tree_node(bool)
        ../../gcc/gcc/cp/module.cc:9174
0xa6d36b module_state::read_cluster(unsigned int)
        ../../gcc/gcc/cp/module.cc:14858
0xa6d86d module_state::load_section(unsigned int, binding_slot*)
        ../../gcc/gcc/cp/module.cc:18125
0xa6d92f module_state::lazy_load(unsigned int, binding_slot*)
        ../../gcc/gcc/cp/module.cc:18779
0xa70b67 lazy_load_pendings(tree_node*)
        ../../gcc/gcc/cp/module.cc:18872
0xa79448 maybe_lazily_declare
        ../../gcc/gcc/cp/name-lookup.c:1922
0xa79448 get_class_binding(tree_node*, tree_node*, bool)
        ../../gcc/gcc/cp/name-lookup.c:1958
0xb3c3be lookup_field_r
        ../../gcc/gcc/cp/search.c:1023
0xb3c646 dfs_walk_all(tree_node*, tree_node* (*)(tree_node*, void*), tree_node*
(*)(tree_node*, void*), void*)
        ../../gcc/gcc/cp/search.c:1453
0xb3c646 lookup_member(tree_node*, tree_node*, int, bool, int,
access_failure_info*)
        ../../gcc/gcc/cp/search.c:1166
0xa759c5 get_class_binding
        ../../gcc/gcc/cp/name-lookup.c:5327
0xa7cebf outer_binding(tree_node*, cxx_binding*, bool)
        ../../gcc/gcc/cp/name-lookup.c:7641
0xa8182a check_local_shadow
        ../../gcc/gcc/cp/name-lookup.c:3143
0xa85d8b do_pushdecl
        ../../gcc/gcc/cp/name-lookup.c:3767
0xa872d2 do_pushdecl
        ../../gcc/gcc/cp/name-lookup.c:3846
0xa872d2 pushdecl(tree_node*, bool)
        ../../gcc/gcc/cp/name-lookup.c:3846
0x9c61f1 do_push_parm_decls(tree_node*, tree_node*, tree_node**)
        ../../gcc/gcc/cp/decl.c:16847
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