cppScope errorMedium

Unexpected crash when processing string view in function

Time: 0:00

BugFind the bug and fix the code

What it should do

Process a string view and return the processed string. Example: processStringView(sv) -> processed string

What happens instead

Segmentation fault (core dumped)

#include <iostream>
#include <string_view>

std::string processStringView(std::string_view sv) {
    std::string result = sv;
    result += " processed";
    return result;
}

int main() {
    auto str = processStringView("temporary");
    std::cout << str << std::endl;
    return 0;
}

Test a custom input to verify an edge case (e.g. empty lists, negative numbers, duplicates).

⏱️0:00

Hints

🏆 0 hints = Flawless Solve

Think & Test Cooldown

2:00 remaining

Take a moment to read the bug symptom and trace the code with Run & Check before unlocking Hint 1.

Hint 2

Unlocks after Hint 1

Hint 3

Unlocks after Hint 2

This bug belongs to the scope and closure bugs pattern

Every callback reports the last value, a counter never increments, UnboundLocalError on a variable you can see.

Learn the scope and closure bugs pattern Step through your own code

<iframe src="https://trybughunt.com/embed/9e7c3c9c-ffb0-472c-b2ee-f1ba58654e47" title="Debugging challenge: Unexpected crash when processing string view in function" width="100%" height="580" loading="lazy" style="border:1px solid #d4d4d8;border-radius:12px;max-width:760px"></iframe> <p style="font-size:14px">Debugging challenge from <a href="https://trybughunt.com/challenges/9e7c3c9c-ffb0-472c-b2ee-f1ba58654e47">TryBugHunt</a></p>

#include <iostream> #include <string_view> std::string processStringView(std::string_view sv) { std::string result = sv; result += " processed"; return result; } int main() { auto str = processStringView("temporary"); std::cout << str << std::endl; return 0; }

Unexpected crash when processing string view in function

What it should do

What happens instead

More scope and closure bugs to practise

Unexpected crash when processing string view in function

What it should do

What happens instead

More scope and closure bugs to practise