gh-106797: Remove warning logs from Python/generated_cases.c.h

[corona10]

• Issue: Python/generated_cases.c.h emits compiler warnings #106797

[corona10]

In file included from Python/ceval.c:770: Python/generated_cases.c.h:3437:48: warning: code will never be executed [-Wunreachable-code] if (0){stack_pointer[-(1 + 0)] = res2} ^~~~ Python/generated_cases.c.h:3437:17: note: silence by adding parentheses to mark code as explicitly dead if (0){stack_pointer[-(1 + 0)] = res2} ^ /* DISABLES CODE */ ( ) Python/generated_cases.c.h:3415:48: warning: code will never be executed [-Wunreachable-code] if (0){stack_pointer[-(1 + 0)] = res2} ^~~~ Python/generated_cases.c.h:3415:17: note: silence by adding parentheses to mark code as explicitly dead if (0){stack_pointer[-(1 + 0)] = res2} ^ /* DISABLES CODE */ ( ) clang -c -fno-strict-overflow -Wsign-compa 

Warning logs are reduced, but not sure this is a safe way.

[gvanrossum]

The if (0) and if (1) can easily be simplified too. It's these lines in assign():

stmt=f"{dst.name} = {cast}{src.name};"ifsrc.cond: stmt=f"if ({src.cond}){{{stmt} }}"self.emit(stmt)

[corona10]

@gvanrossum

It works and it will introduce another warning :)
This issue should be solved separately

Python/generated_cases.c.h:3394:23: warning: unused variable 'res2' [-Wunused-variable] PyObject *res2 = NULL; 

[corona10]

It looks like it needs a keyword for res2 if (0) case, which unused keyword can not replace.

[corona10]

It looks like it needs a keyword for res2 if (0) case, which unused keyword can not replace.

I solved the issue by using the same approach which was used for assigning rule :)

[gvanrossum]

Thanks -- that should do it, merge it!