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=CHECK
2
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_char
ignorelist_0_convert_unsigned_int_to_unsigned_char(unsigned int x)7 __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 100
11 return x;
12 }
13
14 // CHECK-LABEL: @ignorelist_1_convert_unsigned_int_to_unsigned_char
ignorelist_1_convert_unsigned_int_to_unsigned_char(unsigned int x)15 __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_char
ignorelist_2_convert_unsigned_int_to_unsigned_char(unsigned int x)20 __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_char
ignorelist_3_convert_unsigned_int_to_unsigned_char(unsigned int x)25 __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_char
ignorelist_4_convert_unsigned_int_to_unsigned_char(unsigned int x)30 __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_char
ignorelist_5_convert_unsigned_int_to_unsigned_char(unsigned int x)35 __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 200
39 return x;
40 }
41