| // RUN: %clang_cc1 -fsanitize=implicit-integer-truncation -fsanitize-recover=implicit-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 |
| |
| // CHECK-DAG: @[[LINE_100_TRUNCATION:.*]] = {{.*}}, i32 100, i32 10 }, {{.*}}, {{.*}}, i8 0 } |
| // CHECK-DAG: @[[LINE_300_TRUNCATION:.*]] = {{.*}}, i32 300, i32 10 }, {{.*}}, {{.*}}, i8 0 } |
| |
| //----------------------------------------------------------------------------// |
| // Unsigned case. |
| //----------------------------------------------------------------------------// |
| |
| // CHECK-LABEL: @blacklist_0_convert_unsigned_int_to_unsigned_char |
| __attribute__((no_sanitize("undefined"))) unsigned char blacklist_0_convert_unsigned_int_to_unsigned_char(unsigned int x) { |
| // We are not in "undefined" group, so that doesn't work. |
| // CHECK: call void @__ubsan_handle_implicit_conversion(i8* bitcast ({ {{{.*}}}, {{{.*}}}*, {{{.*}}}*, i8 }* @[[LINE_100_TRUNCATION]] to i8*) |
| #line 100 |
| return x; |
| } |
| |
| // CHECK-LABEL: @blacklist_1_convert_unsigned_int_to_unsigned_char |
| __attribute__((no_sanitize("integer"))) unsigned char blacklist_1_convert_unsigned_int_to_unsigned_char(unsigned int x) { |
| return x; |
| } |
| |
| // CHECK-LABEL: @blacklist_2_convert_unsigned_int_to_unsigned_char |
| __attribute__((no_sanitize("implicit-conversion"))) unsigned char blacklist_2_convert_unsigned_int_to_unsigned_char(unsigned int x) { |
| return x; |
| } |
| |
| // CHECK-LABEL: @blacklist_3_convert_unsigned_int_to_unsigned_char |
| __attribute__((no_sanitize("implicit-integer-truncation"))) unsigned char blacklist_3_convert_unsigned_int_to_unsigned_char(unsigned int x) { |
| return x; |
| } |
| |
| //----------------------------------------------------------------------------// |
| // Signed case. |
| //----------------------------------------------------------------------------// |
| |
| // CHECK-LABEL: @blacklist_0_convert_signed_int_to_signed_char |
| __attribute__((no_sanitize("undefined"))) signed char blacklist_0_convert_signed_int_to_signed_char(signed int x) { |
| // We are not in "undefined" group, so that doesn't work. |
| // CHECK: call void @__ubsan_handle_implicit_conversion(i8* bitcast ({ {{{.*}}}, {{{.*}}}*, {{{.*}}}*, i8 }* @[[LINE_300_TRUNCATION]] to i8*) |
| #line 300 |
| return x; |
| } |
| |
| // CHECK-LABEL: @blacklist_1_convert_signed_int_to_signed_char |
| __attribute__((no_sanitize("integer"))) signed char blacklist_1_convert_signed_int_to_signed_char(signed int x) { |
| return x; |
| } |
| |
| // CHECK-LABEL: @blacklist_2_convert_signed_int_to_signed_char |
| __attribute__((no_sanitize("implicit-conversion"))) signed char blacklist_2_convert_signed_int_to_signed_char(signed int x) { |
| return x; |
| } |
| |
| // CHECK-LABEL: @blacklist_3_convert_signed_int_to_signed_char |
| __attribute__((no_sanitize("implicit-integer-truncation"))) signed char blacklist_3_convert_signed_int_to_signed_char(signed int x) { |
| return x; |
| } |