| 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 | // 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 | |
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| 6 | // CHECK-LABEL: @blacklist_0_convert_unsigned_int_to_unsigned_char |
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| 7 | __attribute__((no_sanitize("undefined"))) unsigned char blacklist_0_convert_unsigned_int_to_unsigned_char(unsigned int x) { |
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| 8 | // We are not in "undefined" group, so that doesn't work. |
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| 9 | // CHECK: call void @__ubsan_handle_implicit_conversion(i8* bitcast ({ {{{.*}}}, {{{.*}}}*, {{{.*}}}*, i8 }* @[[LINE_100_UNSIGNED_TRUNCATION]] to i8*) |
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| 10 | #line 100 |
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| 11 | return x; |
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| 12 | } |
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| 13 | |
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| 14 | // CHECK-LABEL: @blacklist_1_convert_unsigned_int_to_unsigned_char |
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| 15 | __attribute__((no_sanitize("integer"))) unsigned char blacklist_1_convert_unsigned_int_to_unsigned_char(unsigned int x) { |
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| 16 | return x; |
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| 17 | } |
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| 18 | |
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| 19 | // CHECK-LABEL: @blacklist_2_convert_unsigned_int_to_unsigned_char |
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| 20 | __attribute__((no_sanitize("implicit-conversion"))) unsigned char blacklist_2_convert_unsigned_int_to_unsigned_char(unsigned int x) { |
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| 21 | return x; |
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| 22 | } |
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| 23 | |
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| 24 | // CHECK-LABEL: @blacklist_3_convert_unsigned_int_to_unsigned_char |
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| 25 | __attribute__((no_sanitize("implicit-integer-truncation"))) unsigned char blacklist_3_convert_unsigned_int_to_unsigned_char(unsigned int x) { |
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| 26 | return x; |
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| 27 | } |
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| 28 | |
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| 29 | // CHECK-LABEL: @blacklist_4_convert_unsigned_int_to_unsigned_char |
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| 30 | __attribute__((no_sanitize("implicit-unsigned-integer-truncation"))) unsigned char blacklist_4_convert_unsigned_int_to_unsigned_char(unsigned int x) { |
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| 31 | return x; |
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| 32 | } |
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| 33 | |
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| 34 | // CHECK-LABEL: @blacklist_5_convert_unsigned_int_to_unsigned_char |
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| 35 | __attribute__((no_sanitize("implicit-signed-integer-truncation"))) unsigned char blacklist_5_convert_unsigned_int_to_unsigned_char(unsigned int x) { |
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| 36 | // This is an unsigned truncation, not signed-one. |
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| 37 | // CHECK: call void @__ubsan_handle_implicit_conversion(i8* bitcast ({ {{{.*}}}, {{{.*}}}*, {{{.*}}}*, i8 }* @[[LINE_200_UNSIGNED_TRUNCATION]] to i8*) |
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| 38 | #line 200 |
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| 39 | return x; |
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| 40 | } |
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| 41 | |
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