| 1 | // RUN: %clang_cc1 -fsanitize=implicit-signed-integer-truncation -fsanitize-recover=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 | // 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_1100_SIGNED_TRUNCATION:.*]] = {{.*}}, i32 1100, i32 10 }, {{.*}}, {{.*}}, i8 2 } |
|---|
| 13 | // CHECK-DAG: @[[LINE_1500_SIGNED_TRUNCATION:.*]] = {{.*}}, i32 1500, i32 10 }, {{.*}}, {{.*}}, i8 2 } |
|---|
| 14 | // CHECK-DAG: @[[LINE_1600_SIGNED_TRUNCATION:.*]] = {{.*}}, i32 1600, i32 10 }, {{.*}}, {{.*}}, i8 2 } |
|---|
| 15 | |
|---|
| 16 | // CHECK-LABEL: @convert_unsigned_int_to_unsigned_int |
|---|
| 17 | unsigned int convert_unsigned_int_to_unsigned_int(unsigned int x) { |
|---|
| 18 | #line 100 |
|---|
| 19 | return x; |
|---|
| 20 | } |
|---|
| 21 | |
|---|
| 22 | // CHECK-LABEL: @convert_unsigned_char_to_unsigned_char |
|---|
| 23 | unsigned char convert_unsigned_char_to_unsigned_char(unsigned char x) { |
|---|
| 24 | #line 200 |
|---|
| 25 | return x; |
|---|
| 26 | } |
|---|
| 27 | |
|---|
| 28 | // CHECK-LABEL: @convert_signed_int_to_signed_int |
|---|
| 29 | signed int convert_signed_int_to_signed_int(signed int x) { |
|---|
| 30 | #line 300 |
|---|
| 31 | return x; |
|---|
| 32 | } |
|---|
| 33 | |
|---|
| 34 | // CHECK-LABEL: @convert_signed_char_to_signed_char |
|---|
| 35 | signed char convert_signed_char_to_signed_char(signed char x) { |
|---|
| 36 | #line 400 |
|---|
| 37 | return x; |
|---|
| 38 | } |
|---|
| 39 | |
|---|
| 40 | // CHECK-LABEL: @convert_unsigned_int_to_unsigned_char |
|---|
| 41 | unsigned char convert_unsigned_int_to_unsigned_char(unsigned int x) { |
|---|
| 42 | #line 500 |
|---|
| 43 | return x; |
|---|
| 44 | } |
|---|
| 45 | |
|---|
| 46 | // CHECK-LABEL: @convert_unsigned_char_to_unsigned_int |
|---|
| 47 | unsigned int convert_unsigned_char_to_unsigned_int(unsigned char x) { |
|---|
| 48 | #line 600 |
|---|
| 49 | return x; |
|---|
| 50 | } |
|---|
| 51 | |
|---|
| 52 | // CHECK-LABEL: @convert_unsigned_char_to_signed_int |
|---|
| 53 | signed int convert_unsigned_char_to_signed_int(unsigned char x) { |
|---|
| 54 | #line 700 |
|---|
| 55 | return x; |
|---|
| 56 | } |
|---|
| 57 | |
|---|
| 58 | // CHECK-LABEL: @convert_signed_char_to_signed_int |
|---|
| 59 | signed int convert_signed_char_to_signed_int(signed char x) { |
|---|
| 60 | #line 800 |
|---|
| 61 | return x; |
|---|
| 62 | } |
|---|
| 63 | |
|---|
| 64 | // CHECK-LABEL: @convert_unsigned_int_to_signed_int |
|---|
| 65 | signed int convert_unsigned_int_to_signed_int(unsigned int x) { |
|---|
| 66 | #line 900 |
|---|
| 67 | return x; |
|---|
| 68 | } |
|---|
| 69 | |
|---|
| 70 | // CHECK-LABEL: @convert_signed_int_to_unsigned_int |
|---|
| 71 | unsigned int convert_signed_int_to_unsigned_int(signed int x) { |
|---|
| 72 | #line 1000 |
|---|
| 73 | return x; |
|---|
| 74 | } |
|---|
| 75 | |
|---|
| 76 | // CHECK-LABEL: @convert_signed_int_to_unsigned_char |
|---|
| 77 | unsigned char convert_signed_int_to_unsigned_char(signed int x) { |
|---|
| 78 | // CHECK: call void @__ubsan_handle_implicit_conversion(i8* bitcast ({ {{{.*}}}, {{{.*}}}*, {{{.*}}}*, i8 }* @[[LINE_1100_SIGNED_TRUNCATION]] to i8*) |
|---|
| 79 | #line 1100 |
|---|
| 80 | return x; |
|---|
| 81 | } |
|---|
| 82 | |
|---|
| 83 | // CHECK-LABEL: @convert_signed_char_to_unsigned_char |
|---|
| 84 | unsigned char convert_signed_char_to_unsigned_char(signed char x) { |
|---|
| 85 | #line 1200 |
|---|
| 86 | return x; |
|---|
| 87 | } |
|---|
| 88 | |
|---|
| 89 | // CHECK-LABEL: @convert_unsigned_char_to_signed_char |
|---|
| 90 | signed char convert_unsigned_char_to_signed_char(unsigned char x) { |
|---|
| 91 | #line 1300 |
|---|
| 92 | return x; |
|---|
| 93 | } |
|---|
| 94 | |
|---|
| 95 | // CHECK-LABEL: @convert_signed_char_to_unsigned_int |
|---|
| 96 | unsigned int convert_signed_char_to_unsigned_int(signed char x) { |
|---|
| 97 | #line 1400 |
|---|
| 98 | return x; |
|---|
| 99 | } |
|---|
| 100 | |
|---|
| 101 | // CHECK-LABEL: @convert_unsigned_int_to_signed_char |
|---|
| 102 | signed char convert_unsigned_int_to_signed_char(unsigned int x) { |
|---|
| 103 | // CHECK: call void @__ubsan_handle_implicit_conversion(i8* bitcast ({ {{{.*}}}, {{{.*}}}*, {{{.*}}}*, i8 }* @[[LINE_1500_SIGNED_TRUNCATION]] to i8*) |
|---|
| 104 | #line 1500 |
|---|
| 105 | return x; |
|---|
| 106 | } |
|---|
| 107 | |
|---|
| 108 | // CHECK-LABEL: @convert_signed_int_to_signed_char |
|---|
| 109 | signed char convert_signed_int_to_signed_char(signed int x) { |
|---|
| 110 | // CHECK: call void @__ubsan_handle_implicit_conversion(i8* bitcast ({ {{{.*}}}, {{{.*}}}*, {{{.*}}}*, i8 }* @[[LINE_1600_SIGNED_TRUNCATION]] to i8*) |
|---|
| 111 | #line 1600 |
|---|
| 112 | return x; |
|---|
| 113 | } |
|---|
| 114 | |
|---|