https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104234
Bug ID: 104234
Summary: ICE with -fmodules-ts and std::map/_Rb_tree
Product: gcc
Version: 11.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: nemanjab at amazon dot com
Target Milestone: ---
Hello,
I found an ICE with -fmodules-ts and reduced it to:
```
template <typename> struct _Node_handle_common {
template <typename> friend class _Rb_tree;
};
struct _Hashtable {
using node_type = _Node_handle_common<int>;
node_type __trans_tmp_1;
};
template <typename> struct _Rb_tree {
struct _Rb_tree_impl {
_Rb_tree_impl();
} _M_impl;
};
_Rb_tree<int> _M_tmap_;
```
gcc version 12.0.1 20220125/master, fails with gcc version 11.2.0 as well:
```
repro.cpp:8:28: internal compiler error: tree check: expected class ‘type’,
have ‘declaration’ (type_decl) in get_originating_module_decl, at
cp/module.cc:18339
8 | template <typename> struct _Rb_tree {
| ^~~~~~~~
0x90b6a5 tree_class_check_failed(tree_node const*, tree_code_class, char
const*, int, char const*)
../../gcc/gcc/tree.cc:8752
0x76bfb2 tree_class_check(tree_node*, tree_code_class, char const*, int, char
const*)
../../gcc/gcc/tree.h:3564
0x76bfb2 get_originating_module_decl(tree_node*)
../../gcc/gcc/cp/module.cc:18339
0xb10ea7 get_originating_module(tree_node*, bool)
../../gcc/gcc/cp/module.cc:18378
0xae670c maybe_write_module
../../gcc/gcc/cp/mangle.cc:901
0xae670c write_name
../../gcc/gcc/cp/mangle.cc:969
0xae8f16 write_encoding
../../gcc/gcc/cp/mangle.cc:811
0xae96fa mangle_decl_string
../../gcc/gcc/cp/mangle.cc:4034
0xae98ea get_mangled_id
../../gcc/gcc/cp/mangle.cc:4055
0xae98ea mangle_decl(tree_node*)
../../gcc/gcc/cp/mangle.cc:4093
0x14d62cd decl_assembler_name(tree_node*)
../../gcc/gcc/tree.cc:715
0x1531f81 notice_global_symbol(tree_node*)
../../gcc/gcc/varasm.cc:1801
0xd88b5a cgraph_node::finalize_function(tree_node*, bool)
../../gcc/gcc/cgraphunit.cc:453
0xc1677f expand_or_defer_fn(tree_node*)
../../gcc/gcc/cp/semantics.cc:4791
0xb498f4 maybe_clone_body(tree_node*)
../../gcc/gcc/cp/optimize.cc:700
0xc16495 expand_or_defer_fn_1(tree_node*)
../../gcc/gcc/cp/semantics.cc:4755
0xc16758 expand_or_defer_fn(tree_node*)
../../gcc/gcc/cp/semantics.cc:4786
0xaf8060 synthesize_method(tree_node*)
../../gcc/gcc/cp/method.cc:1840
0xab045d mark_used(tree_node*, int)
../../gcc/gcc/cp/decl2.cc:5938
0x9f851a build_over_call
../../gcc/gcc/cp/call.cc:9860
```
