https://gcc.gnu.org/bugzilla/show_bug.cgi?id=126017
Bug ID: 126017
Summary: internal compiler error: tree code 'meta_type' is not
supported in LTO streams
Product: gcc
Version: 17.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: chzn at mail dot ustc.edu.cn
Target Milestone: ---
https://godbolt.org/z/vjo64n3af
```
#include <meta>
consteval std::meta::info s() {
struct S;
consteval {define_aggregate(^^S,{data_member_spec(^^int,{.name="abc"})});}
return ^^S;
}
struct T:[:s():]{};
int main() {
T a;
}
```
compile with: -std=c++26 -freflection -flto
result in
```
during IPA pass: modref
<source>:10:1: internal compiler error: tree code 'meta_type' is not supported
in LTO streams
10 | }
| ^
0x2a1e6b8 diagnostics::context::diagnostic_impl(rich_location*,
diagnostics::metadata const*, diagnostics::option_id, char const*,
__va_list_tag (*) [1], diagnostics::kind)
???:0
0x2a132fb internal_error(char const*, ...)
???:0
0x13ad89e DFS::DFS(output_block*, tree_node*, bool, bool, bool)
???:0
0x13ae9f4 lto_output_tree(output_block*, tree_node*, bool, bool)
???:0
0x13b200f produce_asm_for_decls()
???:0
0x145046e ipa_write_summaries()
???:0
0xff3ec6 symbol_table::finalize_compilation_unit()
???:0
/cefs/07/0710cefbc8745719d726ab07_gcc-trunk-20260627/bin/../libexec/gcc/x86_64-linux-gnu/17.0.0/cc1plus
-quiet -imultiarch x86_64-linux-gnu -iprefix
/cefs/07/0710cefbc8745719d726ab07_gcc-trunk-20260627/bin/../lib/gcc/x86_64-linux-gnu/17.0.0/
-D_GNU_SOURCE <source> -quiet -dumpdir /app/ -dumpbase output.cpp -dumpbase-ext
.cpp -masm=intel -mtune=generic -march=x86-64 -g -std=c++26
-fdiagnostics-color=always -fno-verbose-asm -freflection -flto -o /app/output.s
Please submit a full bug report, with preprocessed source (by using
-freport-bug).
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.
Compiler returned: 1
```
