| // RUN: %clang_cc1 -ffreestanding -emit-llvm -o - -std=c2x %s | FileCheck %s |
| // RUN: %clang_cc1 -ffreestanding -std=c17 -verify %s |
| |
| /* WG14 N2826: Clang 17 |
| * Add annotations for unreachable control flow v2 |
| */ |
| #include <stddef.h> |
| |
| enum E { |
| Zero, |
| One, |
| Two, |
| }; |
| |
| int test(enum E e) { |
| switch (e) { |
| case Zero: return 0; |
| case One: return 1; |
| case Two: return 2; |
| } |
| unreachable(); // expected-error {{call to undeclared function 'unreachable'}} |
| } |
| |
| // CHECK: switch i32 %0, label %[[EPILOG:.+]] [ |
| // CHECK: [[EPILOG]]: |
| // CHECK-NEXT: unreachable |
