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 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, i32 0 } 13 14 // CHECK-LABEL: @convert_unsigned_int_to_unsigned_int convert_unsigned_int_to_unsigned_int(unsigned int x)15unsigned int convert_unsigned_int_to_unsigned_int(unsigned int x) { 16 #line 100 17 return x; 18 } 19 20 // CHECK-LABEL: @convert_unsigned_char_to_unsigned_char convert_unsigned_char_to_unsigned_char(unsigned char x)21unsigned char convert_unsigned_char_to_unsigned_char(unsigned char x) { 22 #line 200 23 return x; 24 } 25 26 // CHECK-LABEL: @convert_signed_int_to_signed_int convert_signed_int_to_signed_int(signed int x)27signed int convert_signed_int_to_signed_int(signed int x) { 28 #line 300 29 return x; 30 } 31 32 // CHECK-LABEL: @convert_signed_char_to_signed_char convert_signed_char_to_signed_char(signed char x)33signed char convert_signed_char_to_signed_char(signed char x) { 34 #line 400 35 return x; 36 } 37 38 // CHECK-LABEL: @convert_unsigned_int_to_unsigned_char convert_unsigned_int_to_unsigned_char(unsigned int x)39unsigned char convert_unsigned_int_to_unsigned_char(unsigned int x) { 40 // CHECK: call void @__ubsan_handle_implicit_conversion(ptr @[[LINE_500_UNSIGNED_TRUNCATION]] 41 #line 500 42 return x; 43 } 44 45 // CHECK-LABEL: @convert_unsigned_char_to_unsigned_int convert_unsigned_char_to_unsigned_int(unsigned char x)46unsigned int convert_unsigned_char_to_unsigned_int(unsigned char x) { 47 #line 600 48 return x; 49 } 50 51 // CHECK-LABEL: @convert_unsigned_char_to_signed_int convert_unsigned_char_to_signed_int(unsigned char x)52signed int convert_unsigned_char_to_signed_int(unsigned char x) { 53 #line 700 54 return x; 55 } 56 57 // CHECK-LABEL: @convert_signed_char_to_signed_int convert_signed_char_to_signed_int(signed char x)58signed int convert_signed_char_to_signed_int(signed char x) { 59 #line 800 60 return x; 61 } 62 63 // CHECK-LABEL: @convert_unsigned_int_to_signed_int convert_unsigned_int_to_signed_int(unsigned int x)64signed int convert_unsigned_int_to_signed_int(unsigned int x) { 65 #line 900 66 return x; 67 } 68 69 // CHECK-LABEL: @convert_signed_int_to_unsigned_int convert_signed_int_to_unsigned_int(signed int x)70unsigned int convert_signed_int_to_unsigned_int(signed int x) { 71 #line 1000 72 return x; 73 } 74 75 // CHECK-LABEL: @convert_signed_int_to_unsigned_char convert_signed_int_to_unsigned_char(signed int x)76unsigned char convert_signed_int_to_unsigned_char(signed int x) { 77 #line 1100 78 return x; 79 } 80 81 // CHECK-LABEL: @convert_signed_char_to_unsigned_char convert_signed_char_to_unsigned_char(signed char x)82unsigned char convert_signed_char_to_unsigned_char(signed char x) { 83 #line 1200 84 return x; 85 } 86 87 // CHECK-LABEL: @convert_unsigned_char_to_signed_char convert_unsigned_char_to_signed_char(unsigned char x)88signed char convert_unsigned_char_to_signed_char(unsigned char x) { 89 #line 1300 90 return x; 91 } 92 93 // CHECK-LABEL: @convert_signed_char_to_unsigned_int convert_signed_char_to_unsigned_int(signed char x)94unsigned int convert_signed_char_to_unsigned_int(signed char x) { 95 #line 1400 96 return x; 97 } 98 99 // CHECK-LABEL: @convert_unsigned_int_to_signed_char convert_unsigned_int_to_signed_char(unsigned int x)100signed char convert_unsigned_int_to_signed_char(unsigned int x) { 101 #line 1500 102 return x; 103 } 104 105 // CHECK-LABEL: @convert_signed_int_to_signed_char convert_signed_int_to_signed_char(signed int x)106signed char convert_signed_int_to_signed_char(signed int x) { 107 #line 1600 108 return x; 109 } 110