41 lines · c
1// RUN: %clang_cc1 -fsanitize=implicit-unsigned-integer-truncation -fsanitize-recover=implicit-unsigned-integer-truncation -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s -implicit-check-not="call void @__ubsan_handle_implicit_conversion" --check-prefixes=CHECK2 3// CHECK-DAG: @[[LINE_100_UNSIGNED_TRUNCATION:.*]] = {{.*}}, i32 100, i32 10 }, {{.*}}, {{.*}}, i8 1, i32 0 }4// CHECK-DAG: @[[LINE_200_UNSIGNED_TRUNCATION:.*]] = {{.*}}, i32 200, i32 10 }, {{.*}}, {{.*}}, i8 1, i32 0 }5 6// CHECK-LABEL: @ignorelist_0_convert_unsigned_int_to_unsigned_char7__attribute__((no_sanitize("undefined"))) unsigned char ignorelist_0_convert_unsigned_int_to_unsigned_char(unsigned int x) {8 // We are not in "undefined" group, so that doesn't work.9 // CHECK: call void @__ubsan_handle_implicit_conversion(ptr @[[LINE_100_UNSIGNED_TRUNCATION]]10#line 10011 return x;12}13 14// CHECK-LABEL: @ignorelist_1_convert_unsigned_int_to_unsigned_char15__attribute__((no_sanitize("integer"))) unsigned char ignorelist_1_convert_unsigned_int_to_unsigned_char(unsigned int x) {16 return x;17}18 19// CHECK-LABEL: @ignorelist_2_convert_unsigned_int_to_unsigned_char20__attribute__((no_sanitize("implicit-conversion"))) unsigned char ignorelist_2_convert_unsigned_int_to_unsigned_char(unsigned int x) {21 return x;22}23 24// CHECK-LABEL: @ignorelist_3_convert_unsigned_int_to_unsigned_char25__attribute__((no_sanitize("implicit-integer-truncation"))) unsigned char ignorelist_3_convert_unsigned_int_to_unsigned_char(unsigned int x) {26 return x;27}28 29// CHECK-LABEL: @ignorelist_4_convert_unsigned_int_to_unsigned_char30__attribute__((no_sanitize("implicit-unsigned-integer-truncation"))) unsigned char ignorelist_4_convert_unsigned_int_to_unsigned_char(unsigned int x) {31 return x;32}33 34// CHECK-LABEL: @ignorelist_5_convert_unsigned_int_to_unsigned_char35__attribute__((no_sanitize("implicit-signed-integer-truncation"))) unsigned char ignorelist_5_convert_unsigned_int_to_unsigned_char(unsigned int x) {36 // This is an unsigned truncation, not signed-one.37 // CHECK: call void @__ubsan_handle_implicit_conversion(ptr @[[LINE_200_UNSIGNED_TRUNCATION]]38#line 20039 return x;40}41