The testcase show the stack pointer isn't recovered when we got
exception from _Z3fooiiiiiiiiiiPi, and then we screw up due to
restore return address from wrong stack pointer.
NOTE: Trigger conditions:
1. Frame pointer is required.
2. Stack has out-going argument
3. Vector extension is enabled.
Another run-able testcase:
$ clang++ -target riscv64-unknown-linux-gnu -march=rv64gcv test.cpp
void __attribute__((noinline)) foo(int, int, int, int, int, int, int, int, int, int, int *){
throw int(0);
}
int main(int argc, char **argv) {
int exception_value = 1;
try {
foo(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
} catch (int i) {
exception_value = i;
}
return exception_value;
}