35 lines
888 B
C++
35 lines
888 B
C++
|
// SPDX-License-Identifier: LGPL-3.0-only
|
||
|
|
// SPDX-FileCopyrightText: Copyright (C) 2026 Catcrafts®
|
||
|
|
|
||
|
|
import std;
|
||
|
|
|
||
|
|
namespace {
|
||
|
|
std::int32_t unwound = 0;
|
||
|
|
|
||
|
|
struct Guard {
|
||
|
|
~Guard() { ++unwound; }
|
||
|
|
};
|
||
|
|
|
||
|
|
void Throw(std::int32_t depth) {
|
||
|
|
Guard guard;
|
||
|
|
if (depth == 0) throw std::runtime_error("thrown in wasm");
|
||
|
|
Throw(depth - 1);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
int main(int argc, char** argv) {
|
||
|
|
// With an argument, nothing catches: the run has to fail.
|
||
|
|
if (argc > 1) Throw(0);
|
||
|
|
try {
|
||
|
|
Throw(3);
|
||
|
|
} catch (const std::runtime_error& e) {
|
||
|
|
std::println("caught: {} after {} destructors", e.what(), unwound);
|
||
|
|
}
|
||
|
|
try {
|
||
|
|
const std::vector<std::int32_t> empty;
|
||
|
|
std::println("unreachable: {}", empty.at(1));
|
||
|
|
} catch (const std::out_of_range&) {
|
||
|
|
std::println("caught: out_of_range from libc++");
|
||
|
|
}
|
||
|
|
return 0;
|
||
|
|
}
|