clang/test/CodeGen/ubsan-function.cpp

   1 // RUN: %clang_cc1 -triple x86_64-linux-gnu -emit-llvm -o - %s -fsanitize=function -fno-sanitize-recover=all | FileCheck %s --check-prefixes=CHECK,GNU,64
   2 // RUN: %clang_cc1 -triple x86_64-pc-windows-msvc -emit-llvm -o - %s -fsanitize=function -fno-sanitize-recover=all | FileCheck %s --check-prefixes=CHECK,MSVC,64
   3 // RUN: %clang_cc1 -triple aarch64-linux-gnu -emit-llvm -o - %s -fsanitize=function -fno-sanitize-recover=all | FileCheck %s --check-prefixes=CHECK,GNU,64
   4 // RUN: %clang_cc1 -triple aarch64_be-linux-gnu -emit-llvm -o - %s -fsanitize=function -fno-sanitize-recover=all | FileCheck %s --check-prefixes=CHECK,GNU,64
   5 // RUN: %clang_cc1 -triple arm-none-eabi -emit-llvm -o - %s -fsanitize=function -fno-sanitize-recover=all | FileCheck %s --check-prefixes=CHECK,ARM,GNU,32
   6
   7 // RUN: %clang_cc1 -triple arm64e-apple-ios  -emit-llvm -o - %s -fsanitize=function -fno-sanitize-recover=all -fptrauth-calls | FileCheck %s --check-prefixes=CHECK,GNU,64,AUTH
   8 // RUN: %clang_cc1 -triple aarch64-linux-gnu -emit-llvm -o - %s -fsanitize=function -fno-sanitize-recover=all -fptrauth-calls | FileCheck %s --check-prefixes=CHECK,GNU,64,AUTH
   9
  10 // GNU:  define{{.*}} void @_Z3funv() #0 !func_sanitize ![[FUNCSAN:.*]] {
  11 // MSVC: define{{.*}} void @"?fun@@YAXXZ"() #0 !func_sanitize ![[FUNCSAN:.*]] {
  12 void fun() {}
  13
  14 // GNU-LABEL:  define{{.*}} void @_Z6callerPFvvE(ptr noundef %f)
  15 // MSVC-LABEL: define{{.*}} void @"?caller@@YAXP6AXXZ@Z"(ptr noundef %f)
  16 // ARM:   ptrtoint ptr {{.*}} to i32, !nosanitize !5
  17 // ARM:   and i32 {{.*}}, -2, !nosanitize !5
  18 // ARM:   inttoptr i32 {{.*}} to ptr, !nosanitize !5
  19 // AUTH:  %[[STRIPPED:.*]] = ptrtoint ptr {{.*}} to i64, !nosanitize
  20 // AUTH:  call i64 @llvm.ptrauth.auth(i64 %[[STRIPPED]], i32 0, i64 0), !nosanitize
  21 // CHECK: getelementptr <{ i32, i32 }>, ptr {{.*}}, i32 -1, i32 0, !nosanitize
  22 // CHECK: load i32, ptr {{.*}}, align {{.*}}, !nosanitize
  23 // CHECK: icmp eq i32 {{.*}}, -1056584962, !nosanitize
  24 // CHECK: br i1 {{.*}}, label %[[LABEL1:.*]], label %[[LABEL4:.*]], !nosanitize
  25 // CHECK: [[LABEL1]]:
  26 // CHECK: getelementptr <{ i32, i32 }>, ptr {{.*}}, i32 -1, i32 1, !nosanitize
  27 // CHECK: load i32, ptr {{.*}}, align {{.*}}, !nosanitize
  28 // GNU:   icmp eq i32 {{.*}}, 905068220, !nosanitize
  29 // MSVC:  icmp eq i32 {{.*}}, -1600339357, !nosanitize
  30 // CHECK: br i1 {{.*}}, label %[[LABEL3:.*]], label %[[LABEL2:[^,]*]], {{.*}}!nosanitize
  31 // CHECK: [[LABEL2]]:
  32 // 64:    call void @__ubsan_handle_function_type_mismatch_abort(ptr @[[#]], i64 %[[#]]) #[[#]], !nosanitize
  33 // 32:    call void @__ubsan_handle_function_type_mismatch_abort(ptr @[[#]], i32 %[[#]]) #[[#]], !nosanitize
  34 // CHECK-NEXT: unreachable, !nosanitize
  35 // CHECK-EMPTY:
  36 // CHECK-NEXT: [[LABEL3]]:
  37 // CHECK: br label %[[LABEL4]], !nosanitize
  38 // CHECK-EMPTY:
  39 // CHECK-NEXT: [[LABEL4]]:
  40 // CHECK-NEXT:   call void
  41 // CHECK-NEXT:   ret void
  42 void caller(void (*f)()) { f(); }
  43
  44 // GNU:  ![[FUNCSAN]] = !{i32 -1056584962, i32 905068220}
  45 // MSVC: ![[FUNCSAN]] = !{i32 -1056584962, i32 -1600339357}