1 // RUN: %clang_cc1 -fsanitize=implicit-signed-integer-truncation,implicit-integer-sign-change -fsanitize-recover=implicit-signed-integer-truncation,implicit-integer-sign-change -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 // Test plan: 4 // * Two types - int and char 5 // * Two signs - signed and unsigned 6 // * Square that - we have input and output types. 7 // Thus, there are total of (2*2)^2 == 16 tests. 8 // These are all the possible variations/combinations of casts. 9 // However, not all of them should result in the check. 10 // So here, we *only* check which should and which should not result in checks. 11 12 // CHECK-DAG: @[[LINE_900_SIGN_CHANGE:.*]] = {{.*}}, i32 900, i32 10 }, {{.*}}, {{.*}}, i8 3 } 13 // CHECK-DAG: @[[LINE_1000_SIGN_CHANGE:.*]] = {{.*}}, i32 1000, i32 10 }, {{.*}}, {{.*}}, i8 3 } 14 // CHECK-DAG: @[[LINE_1100_SIGNED_TRUNCATION:.*]] = {{.*}}, i32 1100, i32 10 }, {{.*}}, {{.*}}, i8 2 } 15 // CHECK-DAG: @[[LINE_1200_SIGN_CHANGE:.*]] = {{.*}}, i32 1200, i32 10 }, {{.*}}, {{.*}}, i8 3 } 16 // CHECK-DAG: @[[LINE_1300_SIGN_CHANGE:.*]] = {{.*}}, i32 1300, i32 10 }, {{.*}}, {{.*}}, i8 3 } 17 // CHECK-DAG: @[[LINE_1400_SIGN_CHANGE:.*]] = {{.*}}, i32 1400, i32 10 }, {{.*}}, {{.*}}, i8 3 } 18 // CHECK-DAG: @[[LINE_1500_SIGNED_TRUNCATION_OR_SIGN_CHANGE:.*]] = {{.*}}, i32 1500, i32 10 }, {{.*}}, {{.*}}, i8 4 } 19 // CHECK-DAG: @[[LINE_1600_SIGNED_TRUNCATION:.*]] = {{.*}}, i32 1600, i32 10 }, {{.*}}, {{.*}}, i8 2 } 20 21 // CHECK-LABEL: @convert_unsigned_int_to_unsigned_int 22 unsigned int convert_unsigned_int_to_unsigned_int(unsigned int x) { 23 #line 100 24 return x; 25 } 26 27 // CHECK-LABEL: @convert_unsigned_char_to_unsigned_char 28 unsigned char convert_unsigned_char_to_unsigned_char(unsigned char x) { 29 #line 200 30 return x; 31 } 32 33 // CHECK-LABEL: @convert_signed_int_to_signed_int 34 signed int convert_signed_int_to_signed_int(signed int x) { 35 #line 300 36 return x; 37 } 38 39 // CHECK-LABEL: @convert_signed_char_to_signed_char 40 signed char convert_signed_char_to_signed_char(signed char x) { 41 #line 400 42 return x; 43 } 44 45 // CHECK-LABEL: @convert_unsigned_int_to_unsigned_char 46 unsigned char convert_unsigned_int_to_unsigned_char(unsigned int x) { 47 #line 500 48 return x; 49 } 50 51 // CHECK-LABEL: @convert_unsigned_char_to_unsigned_int 52 unsigned int convert_unsigned_char_to_unsigned_int(unsigned char x) { 53 #line 600 54 return x; 55 } 56 57 // CHECK-LABEL: @convert_unsigned_char_to_signed_int 58 signed int convert_unsigned_char_to_signed_int(unsigned char x) { 59 #line 700 60 return x; 61 } 62 63 // CHECK-LABEL: @convert_signed_char_to_signed_int 64 signed int convert_signed_char_to_signed_int(signed char x) { 65 #line 800 66 return x; 67 } 68 69 // CHECK-LABEL: @convert_unsigned_int_to_signed_int 70 signed int convert_unsigned_int_to_signed_int(unsigned int x) { 71 // CHECK: call void @__ubsan_handle_implicit_conversion(ptr @[[LINE_900_SIGN_CHANGE]] 72 #line 900 73 return x; 74 } 75 76 // CHECK-LABEL: @convert_signed_int_to_unsigned_int 77 unsigned int convert_signed_int_to_unsigned_int(signed int x) { 78 // CHECK: call void @__ubsan_handle_implicit_conversion(ptr @[[LINE_1000_SIGN_CHANGE]] 79 #line 1000 80 return x; 81 } 82 83 // CHECK-LABEL: @convert_signed_int_to_unsigned_char 84 unsigned char convert_signed_int_to_unsigned_char(signed int x) { 85 // CHECK: call void @__ubsan_handle_implicit_conversion(ptr @[[LINE_1100_SIGNED_TRUNCATION]] 86 #line 1100 87 return x; 88 } 89 90 // CHECK-LABEL: @convert_signed_char_to_unsigned_char 91 unsigned char convert_signed_char_to_unsigned_char(signed char x) { 92 // CHECK: call void @__ubsan_handle_implicit_conversion(ptr @[[LINE_1200_SIGN_CHANGE]] 93 #line 1200 94 return x; 95 } 96 97 // CHECK-LABEL: @convert_unsigned_char_to_signed_char 98 signed char convert_unsigned_char_to_signed_char(unsigned char x) { 99 // CHECK: call void @__ubsan_handle_implicit_conversion(ptr @[[LINE_1300_SIGN_CHANGE]] 100 #line 1300 101 return x; 102 } 103 104 // CHECK-LABEL: @convert_signed_char_to_unsigned_int 105 unsigned int convert_signed_char_to_unsigned_int(signed char x) { 106 // CHECK: call void @__ubsan_handle_implicit_conversion(ptr @[[LINE_1400_SIGN_CHANGE]] 107 #line 1400 108 return x; 109 } 110 111 // CHECK-LABEL: @convert_unsigned_int_to_signed_char 112 signed char convert_unsigned_int_to_signed_char(unsigned int x) { 113 // CHECK: call void @__ubsan_handle_implicit_conversion(ptr @[[LINE_1500_SIGNED_TRUNCATION_OR_SIGN_CHANGE]] 114 #line 1500 115 return x; 116 } 117 118 // CHECK-LABEL: @convert_signed_int_to_signed_char 119 signed char convert_signed_int_to_signed_char(signed int x) { 120 // CHECK: call void @__ubsan_handle_implicit_conversion(ptr @[[LINE_1600_SIGNED_TRUNCATION]] 121 #line 1600 122 return x; 123 } 124