catch-implicit-unsigned-integer-truncations-basics.c
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// 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
// Test plan:
// * Two types - int and char
// * Two signs - signed and unsigned
// * Square that - we have input and output types.
// Thus, there are total of (2*2)^2 == 16 tests.
// These are all the possible variations/combinations of casts.
// However, not all of them should result in the check.
// So here, we *only* check which should and which should not result in checks.
// CHECK-DAG: @[[LINE_500_UNSIGNED_TRUNCATION:.*]] = {{.*}}, i32 500, i32 10 }, {{.*}}, {{.*}}, i8 1 }
// CHECK-LABEL: @convert_unsigned_int_to_unsigned_int
unsigned int convert_unsigned_int_to_unsigned_int(unsigned int x) {
#line 100
return x;
}
// CHECK-LABEL: @convert_unsigned_char_to_unsigned_char
unsigned char convert_unsigned_char_to_unsigned_char(unsigned char x) {
#line 200
return x;
}
// CHECK-LABEL: @convert_signed_int_to_signed_int
signed int convert_signed_int_to_signed_int(signed int x) {
#line 300
return x;
}
// CHECK-LABEL: @convert_signed_char_to_signed_char
signed char convert_signed_char_to_signed_char(signed char x) {
#line 400
return x;
}
// CHECK-LABEL: @convert_unsigned_int_to_unsigned_char
unsigned char convert_unsigned_int_to_unsigned_char(unsigned int x) {
// CHECK: call void @__ubsan_handle_implicit_conversion(i8* bitcast ({ {{{.*}}}, {{{.*}}}*, {{{.*}}}*, i8 }* @[[LINE_500_UNSIGNED_TRUNCATION]] to i8*)
#line 500
return x;
}
// CHECK-LABEL: @convert_unsigned_char_to_unsigned_int
unsigned int convert_unsigned_char_to_unsigned_int(unsigned char x) {
#line 600
return x;
}
// CHECK-LABEL: @convert_unsigned_char_to_signed_int
signed int convert_unsigned_char_to_signed_int(unsigned char x) {
#line 700
return x;
}
// CHECK-LABEL: @convert_signed_char_to_signed_int
signed int convert_signed_char_to_signed_int(signed char x) {
#line 800
return x;
}
// CHECK-LABEL: @convert_unsigned_int_to_signed_int
signed int convert_unsigned_int_to_signed_int(unsigned int x) {
#line 900
return x;
}
// CHECK-LABEL: @convert_signed_int_to_unsigned_int
unsigned int convert_signed_int_to_unsigned_int(signed int x) {
#line 1000
return x;
}
// CHECK-LABEL: @convert_signed_int_to_unsigned_char
unsigned char convert_signed_int_to_unsigned_char(signed int x) {
#line 1100
return x;
}
// CHECK-LABEL: @convert_signed_char_to_unsigned_char
unsigned char convert_signed_char_to_unsigned_char(signed char x) {
#line 1200
return x;
}
// CHECK-LABEL: @convert_unsigned_char_to_signed_char
signed char convert_unsigned_char_to_signed_char(unsigned char x) {
#line 1300
return x;
}
// CHECK-LABEL: @convert_signed_char_to_unsigned_int
unsigned int convert_signed_char_to_unsigned_int(signed char x) {
#line 1400
return x;
}
// CHECK-LABEL: @convert_unsigned_int_to_signed_char
signed char convert_unsigned_int_to_signed_char(unsigned int x) {
#line 1500
return x;
}
// CHECK-LABEL: @convert_signed_int_to_signed_char
signed char convert_signed_int_to_signed_char(signed int x) {
#line 1600
return x;
}