CODEWITHSUNDEEP
c++stackruntime-error
user2385009
user2385009

Reputation: 101

Stack runtime error

#include <stack>
#include <functional>

int main()
{
    std::stack<std::function<int()>> s;
    s.push(main);
    return s.top()();
}

I get the following diagnostic:

result: runtime error        time: 0.04s    memory: 39704 kB     signal: 11 (SIGSEGV)

What's going on here?

Upvotes: 0

Views: 827

Answers (2)

Qaz
Qaz

Reputation: 61910

Standard answer: N3485 § 3.6.1/3

The function main shall not be used within a program.

That's pretty self-explanatory.

Upvotes: 1

Mark B
Mark B

Reputation: 96241

First, you aren't allowed to call main yourself. Secondly, it appears to be doing "what you'd expect" and making the call, so you're causing infinite recursion which uses up all your stack space and then overflows it.

Upvotes: 6

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