1 // RUN: %clang_cc1 -fsanitize=implicit-unsigned-integer-truncation,implicit-signed-integer-truncation -fsanitize-recover=implicit-unsigned-integer-truncation,implicit-signed-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 // CHECK-DAG: @[[LINE_300_SIGNED_TRUNCATION:.*]] = {{.*}}, i32 300, i32 10 }, {{.*}}, {{.*}}, i8 2 }
6 // CHECK-DAG: @[[LINE_400_SIGNED_TRUNCATION:.*]] = {{.*}}, i32 400, i32 10 }, {{.*}}, {{.*}}, i8 2 }
7 
8 //----------------------------------------------------------------------------//
9 // Unsigned case.
10 //----------------------------------------------------------------------------//
11 
12 // CHECK-LABEL: @ignorelist_0_convert_unsigned_int_to_unsigned_char
13 __attribute__((no_sanitize("undefined"))) unsigned char ignorelist_0_convert_unsigned_int_to_unsigned_char(unsigned int x) {
14   // We are not in "undefined" group, so that doesn't work.
15   // CHECK: call void @__ubsan_handle_implicit_conversion(i8* bitcast ({ {{{.*}}}, {{{.*}}}*, {{{.*}}}*, i8 }* @[[LINE_100_UNSIGNED_TRUNCATION]] to i8*)
16 #line 100
17   return x;
18 }
19 
20 // CHECK-LABEL: @ignorelist_1_convert_unsigned_int_to_unsigned_char
21 __attribute__((no_sanitize("integer"))) unsigned char ignorelist_1_convert_unsigned_int_to_unsigned_char(unsigned int x) {
22   return x;
23 }
24 
25 // CHECK-LABEL: @ignorelist_2_convert_unsigned_int_to_unsigned_char
26 __attribute__((no_sanitize("implicit-conversion"))) unsigned char ignorelist_2_convert_unsigned_int_to_unsigned_char(unsigned int x) {
27   return x;
28 }
29 
30 // CHECK-LABEL: @ignorelist_3_convert_unsigned_int_to_unsigned_char
31 __attribute__((no_sanitize("implicit-integer-truncation"))) unsigned char ignorelist_3_convert_unsigned_int_to_unsigned_char(unsigned int x) {
32   return x;
33 }
34 
35 // CHECK-LABEL: @ignorelist_4_convert_unsigned_int_to_unsigned_char
36 __attribute__((no_sanitize("implicit-unsigned-integer-truncation"))) unsigned char ignorelist_4_convert_unsigned_int_to_unsigned_char(unsigned int x) {
37   return x;
38 }
39 
40 // CHECK-LABEL: @ignorelist_5_convert_unsigned_int_to_unsigned_char
41 __attribute__((no_sanitize("implicit-signed-integer-truncation"))) unsigned char ignorelist_5_convert_unsigned_int_to_unsigned_char(unsigned int x) {
42   // This is an unsigned truncation, not signed-one.
43   // CHECK: call void @__ubsan_handle_implicit_conversion(i8* bitcast ({ {{{.*}}}, {{{.*}}}*, {{{.*}}}*, i8 }* @[[LINE_200_UNSIGNED_TRUNCATION]] to i8*)
44 #line 200
45   return x;
46 }
47 
48 //----------------------------------------------------------------------------//
49 // Signed case.
50 //----------------------------------------------------------------------------//
51 
52 // CHECK-LABEL: @ignorelist_0_convert_signed_int_to_signed_char
53 __attribute__((no_sanitize("undefined"))) signed char ignorelist_0_convert_signed_int_to_signed_char(signed int x) {
54   // We are not in "undefined" group, so that doesn't work.
55   // CHECK: call void @__ubsan_handle_implicit_conversion(i8* bitcast ({ {{{.*}}}, {{{.*}}}*, {{{.*}}}*, i8 }* @[[LINE_300_SIGNED_TRUNCATION]] to i8*)
56 #line 300
57   return x;
58 }
59 
60 // CHECK-LABEL: @ignorelist_1_convert_signed_int_to_signed_char
61 __attribute__((no_sanitize("integer"))) signed char ignorelist_1_convert_signed_int_to_signed_char(signed int x) {
62   return x;
63 }
64 
65 // CHECK-LABEL: @ignorelist_2_convert_signed_int_to_signed_char
66 __attribute__((no_sanitize("implicit-conversion"))) signed char ignorelist_2_convert_signed_int_to_signed_char(signed int x) {
67   return x;
68 }
69 
70 // CHECK-LABEL: @ignorelist_3_convert_signed_int_to_signed_char
71 __attribute__((no_sanitize("implicit-integer-truncation"))) signed char ignorelist_3_convert_signed_int_to_signed_char(signed int x) {
72   return x;
73 }
74 
75 // CHECK-LABEL: @ignorelist_4_convert_signed_int_to_signed_char
76 __attribute__((no_sanitize("implicit-signed-integer-truncation"))) signed char ignorelist_4_convert_signed_int_to_signed_char(signed int x) {
77   return x;
78 }
79 
80 // CHECK-LABEL: @ignorelist_5_convert_signed_int_to_signed_char
81 __attribute__((no_sanitize("implicit-unsigned-integer-truncation"))) signed char ignorelist_5_convert_signed_int_to_signed_char(signed int x) {
82   // This is an signed truncation, not unsigned-one.
83   // CHECK: call void @__ubsan_handle_implicit_conversion(i8* bitcast ({ {{{.*}}}, {{{.*}}}*, {{{.*}}}*, i8 }* @[[LINE_400_SIGNED_TRUNCATION]] to i8*)
84 #line 400
85   return x;
86 }
87