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Jeremy Rifkin 2024-08-20 22:55:05 -05:00
parent 5555296033
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@ -375,17 +375,24 @@ Cpptrace provides `CPPTRACE_TRY` and `CPPTRACE_CATCH` macros that allow a stack
thrown exception object, with minimal or no overhead in the non-throwing path:
```cpp
CPPTRACE_TRY {
foo();
} CPPTRACE_CATCH(const std::exception& e) {
std::cerr<<"Exception: "<<e.what()<<std::endl;
cpptrace::from_current_exception().print();
#include <cpptrace/from_current.hpp>
void foo() {
throw std::runtime_error("foo failed");
}
int main() {
CPPTRACE_TRY {
foo();
} CPPTRACE_CATCH(const std::exception& e) {
std::cerr<<"Exception: "<<e.what()<<std::endl;
cpptrace::from_current_exception().print();
}
}
```
This functionality is entirely opt-in, to access this use `#include <cpptrace/from_current.hpp>`.
Any declarator `catch` accepts works with `CPPTRACE_CATCH`, including `...`.
Any declarator `catch` accepts works with `CPPTRACE_CATCH`, including `...`. This works with any thrown object, not just
`std::exceptions`, it even works with `throw 0;`
![from_current](res/from_current.png)