1 // RUN: %clang_cc1 -no-opaque-pointers -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