| Issue |
142842
|
| Summary |
[clang] segfault infinite recursion template template parameter default argument
|
| Labels |
bug,
clang:frontend,
crash-on-invalid
|
| Assignees |
|
| Reporter |
mizvekov
|
Example: https://godbolt.org/z/5eKPfxK85
```C++
template<class T, template<class> class TT> struct A;
template<class T, template<class> class TT = A> struct A {};
A<int> a;
```
This exhausts the stack before we hit the instantiation depth implementation limit:
```
<source>:2:46: warning: stack nearly exhausted; compilation time may suffer, and crashes due to stack overflow are likely [-Wstack-exhausted]
2 | template<class T, template<class> class TT = A> struct A {};
| ^
Program terminated with signal: SIGSEGV
Compiler returned: 139
```
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