On Sunday, 16 January 2022 at 15:15:07 UTC, Hipreme wrote:
Is there some way to throw a stack trace when killing the
program from the CTRL+C from the terminal?
It would help a lot into debugging occasional infinity loops
On POSIX, you can use the `sigaction` function to install a
signal handler for `SIGINT`, the signal generated by CTRL+C. To
terminate the program with a stack trace, simply have the signal
handler `throw` an `Error`.
Here's an example program that demonstrates the technique:
```d
import core.sys.posix.signal;
extern(C) void handleCtrlC(int)
{
throw new Error("Killed by CTRL+C");
}
void main()
{
sigaction_t act = { sa_handler: &handleCtrlC };
int errcode = sigaction(SIGINT, &act, null);
f(); // call some functions
}
void f() { g(); }
void g() { h(); }
void h()
{
while (1) {} // wait for ctrl+c
}
```
Make sure to compile with the `-g` option if you want your stack
trace to have filenames and line numbers.
