| 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 |
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| 2 | |
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| 3 | // CHECK-DAG: @[[LINE_100_UNSIGNED_TRUNCATION:.*]] = {{.*}}, i32 100, i32 10 }, {{.*}}, {{.*}}, i8 1 } |
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| 4 | // CHECK-DAG: @[[LINE_200_UNSIGNED_TRUNCATION:.*]] = {{.*}}, i32 200, i32 10 }, {{.*}}, {{.*}}, i8 1 } |
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| 5 | // CHECK-DAG: @[[LINE_300_SIGNED_TRUNCATION:.*]] = {{.*}}, i32 300, i32 10 }, {{.*}}, {{.*}}, i8 2 } |
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| 6 | // CHECK-DAG: @[[LINE_400_SIGNED_TRUNCATION:.*]] = {{.*}}, i32 400, i32 10 }, {{.*}}, {{.*}}, i8 2 } |
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| 7 | |
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| 8 | //----------------------------------------------------------------------------// |
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| 9 | // Unsigned case. |
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| 10 | //----------------------------------------------------------------------------// |
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| 11 | |
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| 12 | // CHECK-LABEL: @blacklist_0_convert_unsigned_int_to_unsigned_char |
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| 13 | __attribute__((no_sanitize("undefined"))) unsigned char blacklist_0_convert_unsigned_int_to_unsigned_char(unsigned int x) { |
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| 14 | // We are not in "undefined" group, so that doesn't work. |
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| 15 | // CHECK: call void @__ubsan_handle_implicit_conversion(i8* bitcast ({ {{{.*}}}, {{{.*}}}*, {{{.*}}}*, i8 }* @[[LINE_100_UNSIGNED_TRUNCATION]] to i8*) |
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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: @blacklist_1_convert_unsigned_int_to_unsigned_char |
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| 21 | __attribute__((no_sanitize("integer"))) unsigned char blacklist_1_convert_unsigned_int_to_unsigned_char(unsigned int x) { |
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| 22 | return x; |
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| 23 | } |
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| 24 | |
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| 25 | // CHECK-LABEL: @blacklist_2_convert_unsigned_int_to_unsigned_char |
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| 26 | __attribute__((no_sanitize("implicit-conversion"))) unsigned char blacklist_2_convert_unsigned_int_to_unsigned_char(unsigned int x) { |
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| 27 | return x; |
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| 28 | } |
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| 29 | |
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| 30 | // CHECK-LABEL: @blacklist_3_convert_unsigned_int_to_unsigned_char |
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| 31 | __attribute__((no_sanitize("implicit-integer-truncation"))) unsigned char blacklist_3_convert_unsigned_int_to_unsigned_char(unsigned int x) { |
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| 32 | return x; |
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| 33 | } |
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| 34 | |
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| 35 | // CHECK-LABEL: @blacklist_4_convert_unsigned_int_to_unsigned_char |
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| 36 | __attribute__((no_sanitize("implicit-unsigned-integer-truncation"))) unsigned char blacklist_4_convert_unsigned_int_to_unsigned_char(unsigned int x) { |
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| 37 | return x; |
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| 38 | } |
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| 39 | |
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| 40 | // CHECK-LABEL: @blacklist_5_convert_unsigned_int_to_unsigned_char |
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| 41 | __attribute__((no_sanitize("implicit-signed-integer-truncation"))) unsigned char blacklist_5_convert_unsigned_int_to_unsigned_char(unsigned int x) { |
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| 42 | // This is an unsigned truncation, not signed-one. |
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| 43 | // CHECK: call void @__ubsan_handle_implicit_conversion(i8* bitcast ({ {{{.*}}}, {{{.*}}}*, {{{.*}}}*, i8 }* @[[LINE_200_UNSIGNED_TRUNCATION]] to i8*) |
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| 44 | #line 200 |
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| 45 | return x; |
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| 46 | } |
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| 47 | |
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| 48 | //----------------------------------------------------------------------------// |
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| 49 | // Signed case. |
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| 50 | //----------------------------------------------------------------------------// |
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| 51 | |
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| 52 | // CHECK-LABEL: @blacklist_0_convert_signed_int_to_signed_char |
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| 53 | __attribute__((no_sanitize("undefined"))) signed char blacklist_0_convert_signed_int_to_signed_char(signed int x) { |
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| 54 | // We are not in "undefined" group, so that doesn't work. |
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| 55 | // CHECK: call void @__ubsan_handle_implicit_conversion(i8* bitcast ({ {{{.*}}}, {{{.*}}}*, {{{.*}}}*, i8 }* @[[LINE_300_SIGNED_TRUNCATION]] to i8*) |
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| 56 | #line 300 |
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| 57 | return x; |
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| 58 | } |
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| 59 | |
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| 60 | // CHECK-LABEL: @blacklist_1_convert_signed_int_to_signed_char |
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| 61 | __attribute__((no_sanitize("integer"))) signed char blacklist_1_convert_signed_int_to_signed_char(signed int x) { |
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| 62 | return x; |
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| 63 | } |
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| 64 | |
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| 65 | // CHECK-LABEL: @blacklist_2_convert_signed_int_to_signed_char |
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| 66 | __attribute__((no_sanitize("implicit-conversion"))) signed char blacklist_2_convert_signed_int_to_signed_char(signed int x) { |
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| 67 | return x; |
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| 68 | } |
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| 69 | |
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| 70 | // CHECK-LABEL: @blacklist_3_convert_signed_int_to_signed_char |
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| 71 | __attribute__((no_sanitize("implicit-integer-truncation"))) signed char blacklist_3_convert_signed_int_to_signed_char(signed int x) { |
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| 72 | return x; |
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| 73 | } |
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| 74 | |
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| 75 | // CHECK-LABEL: @blacklist_4_convert_signed_int_to_signed_char |
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| 76 | __attribute__((no_sanitize("implicit-signed-integer-truncation"))) signed char blacklist_4_convert_signed_int_to_signed_char(signed int x) { |
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| 77 | return x; |
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| 78 | } |
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| 79 | |
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| 80 | // CHECK-LABEL: @blacklist_5_convert_signed_int_to_signed_char |
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| 81 | __attribute__((no_sanitize("implicit-unsigned-integer-truncation"))) signed char blacklist_5_convert_signed_int_to_signed_char(signed int x) { |
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| 82 | // This is an signed truncation, not unsigned-one. |
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| 83 | // CHECK: call void @__ubsan_handle_implicit_conversion(i8* bitcast ({ {{{.*}}}, {{{.*}}}*, {{{.*}}}*, i8 }* @[[LINE_400_SIGNED_TRUNCATION]] to i8*) |
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| 84 | #line 400 |
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| 85 | return x; |
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| 86 | } |
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| 87 | |
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