Can g Recursively Call `main()` in C Despite the Standard Forbidding It?

Calling main() recursively in C

The C Standard dictates that calling main() recursively is not allowed. However, g compiler permits this practice, allowing for unusual code such as:

<code class="cpp">#include <cstdlib>
#include <iostream>
using namespace std;
int main()
{
 int y = rand() % 10; // returns 3, then 6, then 7
 cout << "y = " << y << endl;
 return (y == 7) ? 0 : main();
}

Upon execution:

> g++ g.cpp; ./a.out
y = 3
y = 6
y = 7</code>

Examining the assembly code reveals that main is invoked similarly to any other function:

<code class="assembly">main:
        ...
        cmpl    , -12(%rbp)
        je      .L7
        call    main
        ...
.L7:
        ...
        leave
        ret</code>

While this behavior is not standardized, g appears to have a relaxed approach to enforcing the standard, as evidenced by its lack of objections. However, it issues a sarcastic warning when using the -pedantic flag:

g.cpp:8: error: ISO C++ forbids taking address of function '::main'

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