[EXPERIMENTAL] What if we forced unwind tables?

Author: jieyouxu

tests/ui/debuginfo/auxiliary/dylib-dep-helper-aux.rs

@@ -1,4 +1,4 @@
-//@ compile-flags: -g -Cstrip=none
+//@ compile-flags: -g -Cstrip=none -Cforce-unwind-tables=yes
 
 #[inline(never)]
 pub fn callback<F>(f: F)

tests/ui/debuginfo/auxiliary/dylib-dep-helper.rs

@@ -1,4 +1,4 @@
-//@ compile-flags: -g -Cstrip=none
+//@ compile-flags: -g -Cstrip=none -Cforce-unwind-tables=yes
 
 #![crate_type = "cdylib"]
 #![crate_type = "rlib"]

tests/ui/debuginfo/backtrace-dylib-dep.rs

@@ -8,7 +8,7 @@
 //@ ignore-fuchsia Backtraces not symbolized
 //@ ignore-musl musl doesn't support dynamic libraries (at least when the original test was written).
 //@ needs-unwind
-//@ compile-flags: -g -Copt-level=0 -Cstrip=none
+//@ compile-flags: -g -Copt-level=0 -Cstrip=none -Cforce-unwind-tables=yes
 //@ aux-crate: dylib_dep_helper=dylib-dep-helper.rs
 //@ aux-crate: auxiliary=dylib-dep-helper-aux.rs
 //@ run-pass