// RUN: %clang_cc1 -no-opaque-pointers -triple x86_64-linux-gnu -emit-llvm -o - %s -fsanitize=function -fno-sanitize-recover=all | FileCheck %s

// CHECK-LABEL: define{{.*}} void @_Z3funv() #0 prologue <{ i32, i32 }> <{ i32 846595819, i32 trunc (i64 sub (i64 ptrtoint (i8** @0 to i64), i64 ptrtoint (void ()* @_Z3funv to i64)) to i32) }> {
void fun() {}

// CHECK-LABEL: define{{.*}} void @_Z6callerPFvvE(void ()* noundef %f)
// CHECK: getelementptr <{ i32, i32 }>, <{ i32, i32 }>* {{.*}}, i32 0, i32 0, !nosanitize
// CHECK: load i32, i32* {{.*}}, align {{.*}}, !nosanitize
// CHECK: icmp eq i32 {{.*}}, 846595819, !nosanitize
// CHECK: br i1 {{.*}}, label %[[LABEL1:.*]], label %[[LABEL4:.*]], !nosanitize
// CHECK: [[LABEL1]]:
// CHECK: getelementptr <{ i32, i32 }>, <{ i32, i32 }>* {{.*}}, i32 0, i32 1, !nosanitize
// CHECK: load i32, i32* {{.*}}, align {{.*}}, !nosanitize
// CHECK: icmp eq i8* {{.*}}, bitcast ({ i8*, i8* }* @_ZTIFvvE to i8*), !nosanitize
// CHECK: br i1 {{.*}}, label %[[LABEL3:.*]], label %[[LABEL2:[^,]*]], {{.*}}!nosanitize
// CHECK: [[LABEL2]]:
// CHECK: call void @__ubsan_handle_function_type_mismatch_v1_abort(i8* {{.*}}, i64 {{.*}}, i64 {{.*}}, i64 {{.*}}) #{{.*}}, !nosanitize
// CHECK-NOT: unreachable
// CHECK: br label %[[LABEL3]], !nosanitize
// CHECK: [[LABEL3]]:
// CHECK: br label %[[LABEL4]], !nosanitize
void caller(void (*f)()) { f(); }