clang/test/CodeGen/sanitize-recover.c

   1 // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -fsanitize=unsigned-integer-overflow -fsanitize-recover=unsigned-integer-overflow %s -emit-llvm -o - | FileCheck %s --check-prefix=RECOVER
   2 // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -fsanitize=unsigned-integer-overflow %s -emit-llvm -o - | FileCheck %s --check-prefix=ABORT
   3 // RUN: %clang_cc1 -triple x86_64-apple-darwin10 -fsanitize=null,object-size,alignment -fsanitize-recover=object-size %s -emit-llvm -o - | FileCheck %s --check-prefix=PARTIAL
   4
   5 // RECOVER: @test
   6 // ABORT: @test
   7 void test(void) {
   8   extern volatile unsigned x, y, z;
   9
  10   // RECOVER: uadd.with.overflow.i32{{.*}}, !nosanitize
  11   // RECOVER: ubsan_handle_add_overflow({{.*}}, !nosanitize
  12   // RECOVER-NOT: unreachable
  13   // ABORT: uadd.with.overflow.i32{{.*}}, !nosanitize
  14   // ABORT: ubsan_handle_add_overflow_abort({{.*}}, !nosanitize
  15   // ABORT: unreachable{{.*}}, !nosanitize
  16   x = y + z;
  17 }
  18
  19 void foo(void) {
  20   union { int i; } u;
  21   u.i=1;
  22   // PARTIAL:      %[[SIZE:.*]] = call i64 @llvm.objectsize.i64.p0(ptr {{.*}}, i1 false, i1 false)
  23   // PARTIAL-NEXT: %[[CHECK0:.*]] = icmp uge i64 %[[SIZE]], 4
  24
  25   // PARTIAL:      br i1 %[[CHECK0]], {{.*}} !nosanitize
  26
  27   // PARTIAL:      call void @__ubsan_handle_type_mismatch_v1(
  28 }