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 }
4 // CHECK-DAG: @[[LINE_200_UNSIGNED_TRUNCATION:.*]] = {{.*}}, i32 200, i32 10 }, {{.*}}, {{.*}}, i8 1 }
5 
6 // CHECK-LABEL: @ignorelist_0_convert_unsigned_int_to_unsigned_char
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(i8* bitcast ({ {{{.*}}}, {{{.*}}}*, {{{.*}}}*, i8 }* @[[LINE_100_UNSIGNED_TRUNCATION]] to i8*)
10 #line 100
11   return x;
12 }
13 
14 // CHECK-LABEL: @ignorelist_1_convert_unsigned_int_to_unsigned_char
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
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
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
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
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(i8* bitcast ({ {{{.*}}}, {{{.*}}}*, {{{.*}}}*, i8 }* @[[LINE_200_UNSIGNED_TRUNCATION]] to i8*)
38 #line 200
39   return x;
40 }
41