After JDK-8294314, we would have templateTable.cpp excluded with cast-function-type warning. The underlying cause for it is casting functions for `ldc` bytecodes, which take `bool`-typed handlers:

```
/home/shade/trunks/jdk/src/hotspot/share/interpreter/templateTable.cpp:206:29: error: cast between incompatible function types from 'void (*)(bool)' to 'Template::generator' {aka 'void (*)(int)'} [-Werror=cast-function-type]
  206 | def(code, flags, in, out, (Template::generator)gen, (int)arg);
```

We can make the handling more explicit.