[clang] template template class with std::vector as a default parameter fails to compile with __is_pointer requires template arguments

[bobby3605]

While investigating a separate issue with clang, I came across this issue.
The following code compiles on gcc, but not clang.
https://godbolt.org/z/3boKbWqc8

[llvmbot]

@llvm/issue-subscribers-clang-frontend

Author: bobby3605 (bobby3605)

While investigating a separate [issue](https://github.com//issues/95732) with clang, I came across this issue. The following code compiles on gcc, but not clang. https://godbolt.org/z/3boKbWqc8

[cor3ntin]

@mizvekov

[philnik777]

This is most likely #95598.

[jwakely]

This is most likely #95598.

Yes, definitely.