1 // RUN: %clang_cc1 -fsanitize=implicit-unsigned-integer-truncation,implicit-signed-integer-truncation,implicit-integer-sign-change -fsanitize-recover=implicit-unsigned-integer-truncation,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_500_UNSIGNED_TRUNCATION:.*]] = {{.*}}, i32 500, i32 10 }, {{.*}}, {{.*}}, i8 1 } 13 // CHECK-DAG: @[[LINE_900_SIGN_CHANGE:.*]] = {{.*}}, i32 900, i32 10 }, {{.*}}, {{.*}}, i8 3 } 14 // CHECK-DAG: @[[LINE_1000_SIGN_CHANGE:.*]] = {{.*}}, i32 1000, i32 10 }, {{.*}}, {{.*}}, i8 3 } 15 // CHECK-DAG: @[[LINE_1100_SIGNED_TRUNCATION:.*]] = {{.*}}, i32 1100, i32 10 }, {{.*}}, {{.*}}, i8 2 } 16 // CHECK-DAG: @[[LINE_1200_SIGN_CHANGE:.*]] = {{.*}}, i32 1200, i32 10 }, {{.*}}, {{.*}}, i8 3 } 17 // CHECK-DAG: @[[LINE_1300_SIGN_CHANGE:.*]] = {{.*}}, i32 1300, i32 10 }, {{.*}}, {{.*}}, i8 3 } 18 // CHECK-DAG: @[[LINE_1400_SIGN_CHANGE:.*]] = {{.*}}, i32 1400, i32 10 }, {{.*}}, {{.*}}, i8 3 } 19 // CHECK-DAG: @[[LINE_1500_SIGNED_TRUNCATION_OR_SIGN_CHANGE:.*]] = {{.*}}, i32 1500, i32 10 }, {{.*}}, {{.*}}, i8 4 } 20 // CHECK-DAG: @[[LINE_1600_SIGNED_TRUNCATION:.*]] = {{.*}}, i32 1600, i32 10 }, {{.*}}, {{.*}}, i8 2 } 21 22 // CHECK-LABEL: @convert_unsigned_int_to_unsigned_int 23 unsigned int convert_unsigned_int_to_unsigned_int(unsigned int x) { 24 #line 100 25 return x; 26 } 27 28 // CHECK-LABEL: @convert_unsigned_char_to_unsigned_char 29 unsigned char convert_unsigned_char_to_unsigned_char(unsigned char x) { 30 #line 200 31 return x; 32 } 33 34 // CHECK-LABEL: @convert_signed_int_to_signed_int 35 signed int convert_signed_int_to_signed_int(signed int x) { 36 #line 300 37 return x; 38 } 39 40 // CHECK-LABEL: @convert_signed_char_to_signed_char 41 signed char convert_signed_char_to_signed_char(signed char x) { 42 #line 400 43 return x; 44 } 45 46 // CHECK-LABEL: @convert_unsigned_int_to_unsigned_char 47 unsigned char convert_unsigned_int_to_unsigned_char(unsigned int x) { 48 // CHECK: call void @__ubsan_handle_implicit_conversion(i8* bitcast ({ {{{.*}}}, {{{.*}}}*, {{{.*}}}*, i8 }* @[[LINE_500_UNSIGNED_TRUNCATION]] to i8*) 49 #line 500 50 return x; 51 } 52 53 // CHECK-LABEL: @convert_unsigned_char_to_unsigned_int 54 unsigned int convert_unsigned_char_to_unsigned_int(unsigned char x) { 55 #line 600 56 return x; 57 } 58 59 // CHECK-LABEL: @convert_unsigned_char_to_signed_int 60 signed int convert_unsigned_char_to_signed_int(unsigned char x) { 61 #line 700 62 return x; 63 } 64 65 // CHECK-LABEL: @convert_signed_char_to_signed_int 66 signed int convert_signed_char_to_signed_int(signed char x) { 67 #line 800 68 return x; 69 } 70 71 // CHECK-LABEL: @convert_unsigned_int_to_signed_int 72 signed int convert_unsigned_int_to_signed_int(unsigned int x) { 73 // CHECK: call void @__ubsan_handle_implicit_conversion(i8* bitcast ({ {{{.*}}}, {{{.*}}}*, {{{.*}}}*, i8 }* @[[LINE_900_SIGN_CHANGE]] to i8*) 74 #line 900 75 return x; 76 } 77 78 // CHECK-LABEL: @convert_signed_int_to_unsigned_int 79 unsigned int convert_signed_int_to_unsigned_int(signed int x) { 80 // CHECK: call void @__ubsan_handle_implicit_conversion(i8* bitcast ({ {{{.*}}}, {{{.*}}}*, {{{.*}}}*, i8 }* @[[LINE_1000_SIGN_CHANGE]] to i8*) 81 #line 1000 82 return x; 83 } 84 85 // CHECK-LABEL: @convert_signed_int_to_unsigned_char 86 unsigned char convert_signed_int_to_unsigned_char(signed int x) { 87 // CHECK: call void @__ubsan_handle_implicit_conversion(i8* bitcast ({ {{{.*}}}, {{{.*}}}*, {{{.*}}}*, i8 }* @[[LINE_1100_SIGNED_TRUNCATION]] to i8*) 88 #line 1100 89 return x; 90 } 91 92 // CHECK-LABEL: @convert_signed_char_to_unsigned_char 93 unsigned char convert_signed_char_to_unsigned_char(signed char x) { 94 // CHECK: call void @__ubsan_handle_implicit_conversion(i8* bitcast ({ {{{.*}}}, {{{.*}}}*, {{{.*}}}*, i8 }* @[[LINE_1200_SIGN_CHANGE]] to i8*) 95 #line 1200 96 return x; 97 } 98 99 // CHECK-LABEL: @convert_unsigned_char_to_signed_char 100 signed char convert_unsigned_char_to_signed_char(unsigned char x) { 101 // CHECK: call void @__ubsan_handle_implicit_conversion(i8* bitcast ({ {{{.*}}}, {{{.*}}}*, {{{.*}}}*, i8 }* @[[LINE_1300_SIGN_CHANGE]] to i8*) 102 #line 1300 103 return x; 104 } 105 106 // CHECK-LABEL: @convert_signed_char_to_unsigned_int 107 unsigned int convert_signed_char_to_unsigned_int(signed char x) { 108 // CHECK: call void @__ubsan_handle_implicit_conversion(i8* bitcast ({ {{{.*}}}, {{{.*}}}*, {{{.*}}}*, i8 }* @[[LINE_1400_SIGN_CHANGE]] to i8*) 109 #line 1400 110 return x; 111 } 112 113 // CHECK-LABEL: @convert_unsigned_int_to_signed_char 114 signed char convert_unsigned_int_to_signed_char(unsigned int x) { 115 // CHECK: call void @__ubsan_handle_implicit_conversion(i8* bitcast ({ {{{.*}}}, {{{.*}}}*, {{{.*}}}*, i8 }* @[[LINE_1500_SIGNED_TRUNCATION_OR_SIGN_CHANGE]] to i8*) 116 #line 1500 117 return x; 118 } 119 120 // CHECK-LABEL: @convert_signed_int_to_signed_char 121 signed char convert_signed_int_to_signed_char(signed int x) { 122 // CHECK: call void @__ubsan_handle_implicit_conversion(i8* bitcast ({ {{{.*}}}, {{{.*}}}*, {{{.*}}}*, i8 }* @[[LINE_1600_SIGNED_TRUNCATION]] to i8*) 123 #line 1600 124 return x; 125 } 126