52 lines
3.3 KiB
C
52 lines
3.3 KiB
C
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// NOTE: Assertions have been autogenerated by utils/update_cc_test_checks.py UTC_ARGS: --version 3
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// RUN: %clang_cc1 -triple=x86_64 -verify -ffreestanding -std=c23 %s
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/* WG14 N2683: Clang 18
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* Towards Integer Safety
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*/
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#include <stdckdint.h>
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#include <stddef.h>
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#include <stdint.h>
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void test_semantic() {
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int64_t result64 = 0;
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int32_t result32 = 0;
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wchar_t wide_char = L'A'; // The ascii value of `A` is 65
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bool flag_add = ckd_add(&result64, INT32_MAX, 1);
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bool flag_sub = ckd_sub(&result32, INT32_MAX, -1);
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bool flag_mul = ckd_mul(&result64, INT64_MAX, 1);
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bool flag = ckd_add(&result64, wide_char, result32); // In C, wchar_t is a typedef to some integer type and is allowed.
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// FIXME: add static_assert calls to check the resulting values for correctness
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// once the constant expression interpreter is able to handle the checked arithmetic
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// builtins in C. Currently, they're only a valid constant expression in C++ due to
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// looking for an ICE in C. Also all values in the tests of n2683_2.c should be checked.
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}
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void test_invalid_input() {
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_BitInt(33) a33 = 1;
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char char_var = 'd'; // The ascii value of `d` is 100
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bool bool_var = 1;
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const int const_result = 0;
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enum week{Mon, Tue, Wed};
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enum week day = Mon;
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int a = 100;
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int b = 55;
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int result = 10;
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char plain_char[] = {U'牛'}; /* expected-warning {{implicit conversion from 'unsigned int' to 'char' changes value from 29275 to 91}} */
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// invalid operand argument
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bool flag_no_bitint = ckd_add(&result, a33, a); /* expected-error {{operand argument to checked integer operation must be an integer type other than plain 'char', 'bool', bit-precise, or an enumeration ('_BitInt(33)' invalid)}} */
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bool flag_no_bool = ckd_sub(&result, bool_var, b); /* expected-error {{operand argument to checked integer operation must be an integer type other than plain 'char', 'bool', bit-precise, or an enumeration ('bool' invalid)}} */
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bool flag_no_char = ckd_mul(&result, char_var, a); /* expected-error {{operand argument to checked integer operation must be an integer type other than plain 'char', 'bool', bit-precise, or an enumeration ('char' invalid)}} */
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bool flag_no_enum = ckd_mul(&result, day, b); /* expected-error {{operand argument to checked integer operation must be an integer type other than plain 'char', 'bool', bit-precise, or an enumeration ('enum week' invalid)}} */
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// invalid result type
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bool flag_nostr = ckd_sub(&plain_char, a, b); /* expected-error {{result argument to checked integer operation must be a pointer to a non-const integer type other than plain 'char', 'bool', bit-precise, or an enumeration ('char (*)[1]' invalid)}} */
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bool flag_nobool = ckd_mul(&bool_var, a, b); /* expected-error {{result argument to checked integer operation must be a pointer to a non-const integer type other than plain 'char', 'bool', bit-precise, or an enumeration ('bool *' invalid)}} */
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bool flag_noptr = ckd_add(result, a, b); /* expected-error {{result argument to checked integer operation must be a pointer to a non-const integer type other than plain 'char', 'bool', bit-precise, or an enumeration ('int' invalid)}} */
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bool flag_noconst = ckd_sub(&const_result, a, b); /* expected-error {{result argument to checked integer operation must be a pointer to a non-const integer type other than plain 'char', 'bool', bit-precise, or an enumeration ('const int *' invalid)}} */
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}
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