https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123529
Bug ID: 123529
Summary: [16 Regression] ICE in discriminator_for_local_entity,
at cp/mangle.cc:2316
Product: gcc
Version: 16.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: jirehguo at tju dot edu.cn
Target Milestone: ---
Compiler Explorer: https://godbolt.org/z/78cMsdavW
The following c++ code crash gcc trunk but does not crash gcc 13,14 and 15.
Code:
```cpp
template <int &T> void FuncTemplate() {}
template <typename T> struct Container {
public:
static void Execute() {
static int InternalVar = 43;
FuncTemplate<InternalVar>();
}
};
int main() { Container<char>::Execute; }
```
Stack dump:
```
<source>:1:24: internal compiler error: in discriminator_for_local_entity, at
cp/mangle.cc:2316
1 | template <int &T> void FuncTemplate() {}
| ^~~~~~~~~~~~
0x2924d48 diagnostics::context::diagnostic_impl(rich_location*,
diagnostics::metadata const*, diagnostics::option_id, char const*,
__va_list_tag (*) [1], diagnostics::kind)
???:0
0x2919b0b internal_error(char const*, ...)
???:0
0xb16bf2 fancy_abort(char const*, int, char const*)
???:0
0xc73f59 mangle_decl(tree_node*)
???:0
0x189c175 decl_assembler_name(tree_node*)
???:0
0xfa3861 symbol_table::finalize_compilation_unit()
???:0
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
```
