clang/test/CodeGen/ubsan-function-sugared.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 // GNU:  define{{.*}} void @_Z3funv() #0 !func_sanitize ![[FUNCSAN:.*]] {
   8 // MSVC: define{{.*}} void @"?fun@@YA?A?<auto>@@XZ"() #0 !func_sanitize ![[FUNCSAN:.*]] {
   9 auto fun() {}
  10
  11 // GNU-LABEL:  define{{.*}} void @_Z6callerv()
  12 // MSVC-LABEL: define{{.*}} void @"?caller@@YAXXZ"()
  13 // ARM:   ptrtoint ptr {{.*}} to i32, !nosanitize !4
  14 // ARM:   and i32 {{.*}}, -2, !nosanitize !4
  15 // ARM:   inttoptr i32 {{.*}} to ptr, !nosanitize !4
  16 // CHECK: getelementptr <{ i32, i32 }>, ptr {{.*}}, i32 -1, i32 0, !nosanitize
  17 // CHECK: load i32, ptr {{.*}}, align {{.*}}, !nosanitize
  18 // CHECK: icmp eq i32 {{.*}}, -1056584962, !nosanitize
  19 // CHECK: br i1 {{.*}}, label %[[LABEL1:.*]], label %[[LABEL4:.*]], !nosanitize
  20 // CHECK: [[LABEL1]]:
  21 // CHECK: getelementptr <{ i32, i32 }>, ptr {{.*}}, i32 -1, i32 1, !nosanitize
  22 // CHECK: load i32, ptr {{.*}}, align {{.*}}, !nosanitize
  23 // GNU:   icmp eq i32 {{.*}}, 905068220, !nosanitize
  24 // MSVC:  icmp eq i32 {{.*}}, -1600339357, !nosanitize
  25 // CHECK: br i1 {{.*}}, label %[[LABEL3:.*]], label %[[LABEL2:[^,]*]], {{.*}}!nosanitize
  26 // CHECK: [[LABEL2]]:
  27 // 64:    call void @__ubsan_handle_function_type_mismatch_abort(ptr @[[#]], i64 %[[#]]) #[[#]], !nosanitize
  28 // 32:    call void @__ubsan_handle_function_type_mismatch_abort(ptr @[[#]], i32 %[[#]]) #[[#]], !nosanitize
  29 // CHECK-NEXT: unreachable, !nosanitize
  30 // CHECK-EMPTY:
  31 // CHECK-NEXT: [[LABEL3]]:
  32 // CHECK: br label %[[LABEL4]], !nosanitize
  33 // CHECK-EMPTY:
  34 // CHECK-NEXT: [[LABEL4]]:
  35 // CHECK-NEXT:   call void
  36 // CHECK-NEXT:   ret void
  37 void caller() {
  38   auto a = fun;
  39   a();
  40 }
  41
  42 // GNU:  ![[FUNCSAN]] = !{i32 -1056584962, i32 905068220}
  43 // MSVC: ![[FUNCSAN]] = !{i32 -1056584962, i32 -1600339357}