87 lines · c
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=CHECK2 3// CHECK-DAG: @[[LINE_100_UNSIGNED_TRUNCATION:.*]] = {{.*}}, i32 100, i32 10 }, {{.*}}, {{.*}}, i8 1, i32 0 }4// CHECK-DAG: @[[LINE_200_UNSIGNED_TRUNCATION:.*]] = {{.*}}, i32 200, i32 10 }, {{.*}}, {{.*}}, i8 1, i32 0 }5// CHECK-DAG: @[[LINE_300_SIGNED_TRUNCATION:.*]] = {{.*}}, i32 300, i32 10 }, {{.*}}, {{.*}}, i8 2, i32 0 }6// CHECK-DAG: @[[LINE_400_SIGNED_TRUNCATION:.*]] = {{.*}}, i32 400, i32 10 }, {{.*}}, {{.*}}, i8 2, i32 0 }7 8//----------------------------------------------------------------------------//9// Unsigned case.10//----------------------------------------------------------------------------//11 12// CHECK-LABEL: @ignorelist_0_convert_unsigned_int_to_unsigned_char13__attribute__((no_sanitize("undefined"))) unsigned char ignorelist_0_convert_unsigned_int_to_unsigned_char(unsigned int x) {14 // We are not in "undefined" group, so that doesn't work.15 // CHECK: call void @__ubsan_handle_implicit_conversion(ptr @[[LINE_100_UNSIGNED_TRUNCATION]]16#line 10017 return x;18}19 20// CHECK-LABEL: @ignorelist_1_convert_unsigned_int_to_unsigned_char21__attribute__((no_sanitize("integer"))) unsigned char ignorelist_1_convert_unsigned_int_to_unsigned_char(unsigned int x) {22 return x;23}24 25// CHECK-LABEL: @ignorelist_2_convert_unsigned_int_to_unsigned_char26__attribute__((no_sanitize("implicit-conversion"))) unsigned char ignorelist_2_convert_unsigned_int_to_unsigned_char(unsigned int x) {27 return x;28}29 30// CHECK-LABEL: @ignorelist_3_convert_unsigned_int_to_unsigned_char31__attribute__((no_sanitize("implicit-integer-truncation"))) unsigned char ignorelist_3_convert_unsigned_int_to_unsigned_char(unsigned int x) {32 return x;33}34 35// CHECK-LABEL: @ignorelist_4_convert_unsigned_int_to_unsigned_char36__attribute__((no_sanitize("implicit-unsigned-integer-truncation"))) unsigned char ignorelist_4_convert_unsigned_int_to_unsigned_char(unsigned int x) {37 return x;38}39 40// CHECK-LABEL: @ignorelist_5_convert_unsigned_int_to_unsigned_char41__attribute__((no_sanitize("implicit-signed-integer-truncation"))) unsigned char ignorelist_5_convert_unsigned_int_to_unsigned_char(unsigned int x) {42 // This is an unsigned truncation, not signed-one.43 // CHECK: call void @__ubsan_handle_implicit_conversion(ptr @[[LINE_200_UNSIGNED_TRUNCATION]]44#line 20045 return x;46}47 48//----------------------------------------------------------------------------//49// Signed case.50//----------------------------------------------------------------------------//51 52// CHECK-LABEL: @ignorelist_0_convert_signed_int_to_signed_char53__attribute__((no_sanitize("undefined"))) signed char ignorelist_0_convert_signed_int_to_signed_char(signed int x) {54 // We are not in "undefined" group, so that doesn't work.55 // CHECK: call void @__ubsan_handle_implicit_conversion(ptr @[[LINE_300_SIGNED_TRUNCATION]]56#line 30057 return x;58}59 60// CHECK-LABEL: @ignorelist_1_convert_signed_int_to_signed_char61__attribute__((no_sanitize("integer"))) signed char ignorelist_1_convert_signed_int_to_signed_char(signed int x) {62 return x;63}64 65// CHECK-LABEL: @ignorelist_2_convert_signed_int_to_signed_char66__attribute__((no_sanitize("implicit-conversion"))) signed char ignorelist_2_convert_signed_int_to_signed_char(signed int x) {67 return x;68}69 70// CHECK-LABEL: @ignorelist_3_convert_signed_int_to_signed_char71__attribute__((no_sanitize("implicit-integer-truncation"))) signed char ignorelist_3_convert_signed_int_to_signed_char(signed int x) {72 return x;73}74 75// CHECK-LABEL: @ignorelist_4_convert_signed_int_to_signed_char76__attribute__((no_sanitize("implicit-signed-integer-truncation"))) signed char ignorelist_4_convert_signed_int_to_signed_char(signed int x) {77 return x;78}79 80// CHECK-LABEL: @ignorelist_5_convert_signed_int_to_signed_char81__attribute__((no_sanitize("implicit-unsigned-integer-truncation"))) signed char ignorelist_5_convert_signed_int_to_signed_char(signed int x) {82 // This is an signed truncation, not unsigned-one.83 // CHECK: call void @__ubsan_handle_implicit_conversion(ptr @[[LINE_400_SIGNED_TRUNCATION]]84#line 40085 return x;86}87