[Bug c++/113170] ICE: Segfault (template template parameter, alias template, default template argument)

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113170

Andrew Pinski <pinskia at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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           Keywords|ice-on-invalid-code         |

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
I am not 100% sure this is valid or not; I suspect it is not valid but 
MSVC looks like goes into an similar infinite recusion too.

While clang errors out:
```
<source>:11:8: error: template template argument has different template
parameters than its corresponding template template parameter
   11 |     SS<S, int> ss;
      |        ^
<source>:6:1: note: too many template parameters in template template argument
    6 | template<typename T = int, template<typename> typename TT = SSS>
      | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
<source>:8:10: note: previous template template parameter is here
    8 | template<template<typename> typename TT = S, typename T = int>
      |          ^~~~~~~~~~~~~~~~~~
```

But that error message seems wrong.