gdb get return value of function
int fun() {
return 42;
}
int main() {
fun();
return 0;
}
(gdb) break 2 // set breakpoint at line 2
(gdb) r
Breakpoint 1, fun () at test.c:2
2 return 42;
(gdb) finish // $1 is the value the function returned.
Run till exit from #0 fun () at test.c:2
main () at test.c:7
7 return 0;
Value returned is $1 = 42 // we get the return value is 42