| 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 |
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| 2 | |
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| 3 | // Test plan: |
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| 4 | // * Two types - int and char |
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| 5 | // * Two signs - signed and unsigned |
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| 6 | // * Square that - we have input and output types. |
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| 7 | // Thus, there are total of (2*2)^2 == 16 tests. |
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| 8 | // These are all the possible variations/combinations of casts. |
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| 9 | // However, not all of them should result in the check. |
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| 10 | // So here, we *only* check which should and which should not result in checks. |
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| 11 | |
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| 12 | // CHECK-DAG: @[[LINE_500_UNSIGNED_TRUNCATION:.*]] = {{.*}}, i32 500, i32 10 }, {{.*}}, {{.*}}, i8 1 } |
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| 13 | |
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| 14 | // CHECK-LABEL: @convert_unsigned_int_to_unsigned_int |
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| 15 | unsigned int convert_unsigned_int_to_unsigned_int(unsigned int x) { |
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| 16 | #line 100 |
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| 17 | return x; |
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| 18 | } |
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| 19 | |
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| 20 | // CHECK-LABEL: @convert_unsigned_char_to_unsigned_char |
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| 21 | unsigned char convert_unsigned_char_to_unsigned_char(unsigned char x) { |
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| 22 | #line 200 |
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| 23 | return x; |
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| 24 | } |
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| 25 | |
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| 26 | // CHECK-LABEL: @convert_signed_int_to_signed_int |
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| 27 | signed int convert_signed_int_to_signed_int(signed int x) { |
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| 28 | #line 300 |
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| 29 | return x; |
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| 30 | } |
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| 31 | |
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| 32 | // CHECK-LABEL: @convert_signed_char_to_signed_char |
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| 33 | signed char convert_signed_char_to_signed_char(signed char x) { |
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| 34 | #line 400 |
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| 35 | return x; |
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| 36 | } |
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| 37 | |
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| 38 | // CHECK-LABEL: @convert_unsigned_int_to_unsigned_char |
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| 39 | unsigned char convert_unsigned_int_to_unsigned_char(unsigned int x) { |
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| 40 | // CHECK: call void @__ubsan_handle_implicit_conversion(i8* bitcast ({ {{{.*}}}, {{{.*}}}*, {{{.*}}}*, i8 }* @[[LINE_500_UNSIGNED_TRUNCATION]] to i8*) |
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| 41 | #line 500 |
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| 42 | return x; |
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| 43 | } |
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| 44 | |
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| 45 | // CHECK-LABEL: @convert_unsigned_char_to_unsigned_int |
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| 46 | unsigned int convert_unsigned_char_to_unsigned_int(unsigned char x) { |
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| 47 | #line 600 |
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| 48 | return x; |
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| 49 | } |
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| 50 | |
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| 51 | // CHECK-LABEL: @convert_unsigned_char_to_signed_int |
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| 52 | signed int convert_unsigned_char_to_signed_int(unsigned char x) { |
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| 53 | #line 700 |
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| 54 | return x; |
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| 55 | } |
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| 56 | |
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| 57 | // CHECK-LABEL: @convert_signed_char_to_signed_int |
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| 58 | signed int convert_signed_char_to_signed_int(signed char x) { |
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| 59 | #line 800 |
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| 60 | return x; |
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| 61 | } |
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| 62 | |
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| 63 | // CHECK-LABEL: @convert_unsigned_int_to_signed_int |
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| 64 | signed int convert_unsigned_int_to_signed_int(unsigned int x) { |
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| 65 | #line 900 |
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| 66 | return x; |
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| 67 | } |
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| 68 | |
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| 69 | // CHECK-LABEL: @convert_signed_int_to_unsigned_int |
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| 70 | unsigned int convert_signed_int_to_unsigned_int(signed int x) { |
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| 71 | #line 1000 |
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| 72 | return x; |
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| 73 | } |
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| 74 | |
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| 75 | // CHECK-LABEL: @convert_signed_int_to_unsigned_char |
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| 76 | unsigned char convert_signed_int_to_unsigned_char(signed int x) { |
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| 77 | #line 1100 |
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| 78 | return x; |
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| 79 | } |
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| 80 | |
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| 81 | // CHECK-LABEL: @convert_signed_char_to_unsigned_char |
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| 82 | unsigned char convert_signed_char_to_unsigned_char(signed char x) { |
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| 83 | #line 1200 |
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| 84 | return x; |
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| 85 | } |
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| 86 | |
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| 87 | // CHECK-LABEL: @convert_unsigned_char_to_signed_char |
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| 88 | signed char convert_unsigned_char_to_signed_char(unsigned char x) { |
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| 89 | #line 1300 |
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| 90 | return x; |
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| 91 | } |
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| 92 | |
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| 93 | // CHECK-LABEL: @convert_signed_char_to_unsigned_int |
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| 94 | unsigned int convert_signed_char_to_unsigned_int(signed char x) { |
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| 95 | #line 1400 |
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| 96 | return x; |
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| 97 | } |
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| 98 | |
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| 99 | // CHECK-LABEL: @convert_unsigned_int_to_signed_char |
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| 100 | signed char convert_unsigned_int_to_signed_char(unsigned int x) { |
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| 101 | #line 1500 |
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| 102 | return x; |
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| 103 | } |
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| 104 | |
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| 105 | // CHECK-LABEL: @convert_signed_int_to_signed_char |
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| 106 | signed char convert_signed_int_to_signed_char(signed int x) { |
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| 107 | #line 1600 |
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| 108 | return x; |
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| 109 | } |
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| 110 | |
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