1 // RUN: %clang_cc1 -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 // CHECK-DAG: @[[LINE_100_SIGNED_TRUNCATION:.*]] = {{.*}}, i32 100, i32 10 }, {{.*}}, {{.*}}, i8 2 }
4 // CHECK-DAG: @[[LINE_200_SIGNED_TRUNCATION:.*]] = {{.*}}, i32 200, i32 10 }, {{.*}}, {{.*}}, i8 2 }
5
6 // CHECK-LABEL: @blacklist_0_convert_signed_int_to_signed_char
blacklist_0_convert_signed_int_to_signed_char(signed int x)7 __attribute__((no_sanitize("undefined"))) signed char blacklist_0_convert_signed_int_to_signed_char(signed int x) {
8 // We are not in "undefined" group, so that doesn't work.
9 // CHECK: call void @__ubsan_handle_implicit_conversion(i8* bitcast ({ {{{.*}}}, {{{.*}}}*, {{{.*}}}*, i8 }* @[[LINE_100_SIGNED_TRUNCATION]] to i8*)
10 #line 100
11 return x;
12 }
13
14 // CHECK-LABEL: @blacklist_1_convert_signed_int_to_signed_char
blacklist_1_convert_signed_int_to_signed_char(signed int x)15 __attribute__((no_sanitize("integer"))) signed char blacklist_1_convert_signed_int_to_signed_char(signed int x) {
16 return x;
17 }
18
19 // CHECK-LABEL: @blacklist_2_convert_signed_int_to_signed_char
blacklist_2_convert_signed_int_to_signed_char(signed int x)20 __attribute__((no_sanitize("implicit-conversion"))) signed char blacklist_2_convert_signed_int_to_signed_char(signed int x) {
21 return x;
22 }
23
24 // CHECK-LABEL: @blacklist_3_convert_signed_int_to_signed_char
blacklist_3_convert_signed_int_to_signed_char(signed int x)25 __attribute__((no_sanitize("implicit-integer-truncation"))) signed char blacklist_3_convert_signed_int_to_signed_char(signed int x) {
26 return x;
27 }
28
29 // CHECK-LABEL: @blacklist_4_convert_signed_int_to_signed_char
blacklist_4_convert_signed_int_to_signed_char(signed int x)30 __attribute__((no_sanitize("implicit-signed-integer-truncation"))) signed char blacklist_4_convert_signed_int_to_signed_char(signed int x) {
31 return x;
32 }
33
34 // CHECK-LABEL: @blacklist_5_convert_signed_int_to_signed_char
blacklist_5_convert_signed_int_to_signed_char(signed int x)35 __attribute__((no_sanitize("implicit-unsigned-integer-truncation"))) signed char blacklist_5_convert_signed_int_to_signed_char(signed int x) {
36 // This is an signed truncation, not unsigned-one.
37 // CHECK: call void @__ubsan_handle_implicit_conversion(i8* bitcast ({ {{{.*}}}, {{{.*}}}*, {{{.*}}}*, i8 }* @[[LINE_200_SIGNED_TRUNCATION]] to i8*)
38 #line 200
39 return x;
40 }
41