1 // RUN: %clang_cc1 -fsyntax-only -verify %s -Wimplicit-int-conversion -triple x86_64-gnu-linux
2
3 template<int Bounds>
4 struct HasExtInt {
5 _ExtInt(Bounds) b;
6 unsigned _ExtInt(Bounds) b2;
7 };
8
9 // Delcaring variables:
10 _ExtInt(33) Declarations(_ExtInt(48) &Param) { // Useable in params and returns.
11 short _ExtInt(43) a; // expected-error {{'short _ExtInt' is invalid}}
12 _ExtInt(43) long b; // expected-error {{'long _ExtInt' is invalid}}
13
14 // These should all be fine:
15 const _ExtInt(5) c = 3;
16 const unsigned _ExtInt(5) d; // expected-error {{default initialization of an object of const type 'const unsigned _ExtInt(5)'}}
17 unsigned _ExtInt(5) e = 5;
18 _ExtInt(5) unsigned f;
19
20 _ExtInt(-3) g; // expected-error{{signed _ExtInt must have a bit size of at least 2}}
21 _ExtInt(0) h; // expected-error{{signed _ExtInt must have a bit size of at least 2}}
22 _ExtInt(1) i; // expected-error{{signed _ExtInt must have a bit size of at least 2}}
23 _ExtInt(2) j;;
24 unsigned _ExtInt(0) k;// expected-error{{unsigned _ExtInt must have a bit size of at least 1}}
25 unsigned _ExtInt(1) l;
26 signed _ExtInt(1) m; // expected-error{{signed _ExtInt must have a bit size of at least 2}}
27
28 constexpr _ExtInt(6) n = 33; // expected-warning{{implicit conversion from 'int' to 'const _ExtInt(6)' changes value from 33 to -31}}
29 constexpr _ExtInt(7) o = 33;
30
31 // Check LLVM imposed max size.
32 _ExtInt(0xFFFFFFFFFF) p; // expected-error {{signed _ExtInt of bit sizes greater than 16777215 not supported}}
33 unsigned _ExtInt(0xFFFFFFFFFF) q; // expected-error {{unsigned _ExtInt of bit sizes greater than 16777215 not supported}}
34
35 // Ensure template params are instantiated correctly.
36 // expected-error@5{{signed _ExtInt must have a bit size of at least 2}}
37 // expected-error@6{{unsigned _ExtInt must have a bit size of at least 1}}
38 // expected-note@+1{{in instantiation of template class }}
39 HasExtInt<-1> r;
40 // expected-error@5{{signed _ExtInt must have a bit size of at least 2}}
41 // expected-error@6{{unsigned _ExtInt must have a bit size of at least 1}}
42 // expected-note@+1{{in instantiation of template class }}
43 HasExtInt<0> s;
44 // expected-error@5{{signed _ExtInt must have a bit size of at least 2}}
45 // expected-note@+1{{in instantiation of template class }}
46 HasExtInt<1> t;
47 HasExtInt<2> u;
48
49 _ExtInt(-3.0) v; // expected-error {{integral constant expression must have integral or unscoped enumeration type, not 'double'}}
50 _ExtInt(3.0) x; // expected-error {{integral constant expression must have integral or unscoped enumeration type, not 'double'}}
51
52 return 0;
53 }
54
55 template <_ExtInt(5) I>
56 struct ExtIntTemplParam {
57 static constexpr _ExtInt(5) Var = I;
58 };
59
60 template<typename T>
deduced_whole_type(T)61 void deduced_whole_type(T){}
62 template<int I>
deduced_bound(_ExtInt (I))63 void deduced_bound(_ExtInt(I)){}
64
65 // Ensure ext-int can be used in template places.
Templates()66 void Templates() {
67 ExtIntTemplParam<13> a;
68 constexpr _ExtInt(3) b = 1;
69 ExtIntTemplParam<b> c;
70 constexpr _ExtInt(9) d = 1;
71 ExtIntTemplParam<b> e;
72
73 deduced_whole_type(b);
74 deduced_bound(b);
75 }
76
77 template <typename T, typename U>
78 struct is_same {
79 static constexpr bool value = false;
80 };
81 template <typename T>
82 struct is_same<T,T> {
83 static constexpr bool value = true;
84 };
85
86 // Reject vector types:
87 // expected-error@+1{{invalid vector element type '_ExtInt(32)'}}
88 typedef _ExtInt(32) __attribute__((vector_size(16))) VecTy;
89
90 // Allow _Complex:
91 _Complex _ExtInt(3) Cmplx;
92
93 // Reject cases of _Atomic:
94 // expected-error@+1{{_Atomic cannot be applied to integer type '_ExtInt(4)'}}
95 _Atomic _ExtInt(4) TooSmallAtomic;
96 // expected-error@+1{{_Atomic cannot be applied to integer type '_ExtInt(9)'}}
97 _Atomic _ExtInt(9) NotPow2Atomic;
98 // expected-error@+1{{_Atomic cannot be applied to integer type '_ExtInt(128)'}}
99 _Atomic _ExtInt(128) JustRightAtomic;
100
101 // Test result types of Unary/Bitwise/Binary Operations:
Ops()102 void Ops() {
103 _ExtInt(43) x43_s = 1, y43_s = 1;
104 _ExtInt(sizeof(int) * 8) x32_s = 1, y32_s = 1;
105 unsigned _ExtInt(sizeof(unsigned) * 8) x32_u = 1, y32_u = 1;
106 _ExtInt(4) x4_s = 1, y4_s = 1;
107 unsigned _ExtInt(43) x43_u = 1, y43_u = 1;
108 unsigned _ExtInt(4) x4_u = 1, y4_u = 1;
109 int x_int = 1, y_int = 1;
110 unsigned x_uint = 1, y_uint = 1;
111 bool b;
112
113 // Disabling mixed conversions:
114 // Signed/unsigned mixed.
115 // expected-error@+1{{invalid operands to binary expression}}
116 x43_u + y43_s;
117 // expected-error@+1{{invalid operands to binary expression}}
118 x4_s - y4_u;
119 // expected-error@+1{{invalid operands to binary expression}}
120 x43_s * y43_u;
121 // expected-error@+1{{invalid operands to binary expression}}
122 x4_u / y4_s;
123
124 // Different Sizes.
125 // expected-error@+1{{invalid operands to binary expression}}
126 x43_s + y4_s;
127 // expected-error@+1{{invalid operands to binary expression}}
128 x43_s - y4_u;
129 // expected-error@+1{{invalid operands to binary expression}}
130 x43_u * y4_u;
131 // expected-error@+1{{invalid operands to binary expression}}
132 x4_u / y43_u;
133
134 // Mixed with standard types.
135 // expected-error@+1{{invalid operands to binary expression}}
136 x43_s + x_int;
137 // expected-error@+1{{invalid operands to binary expression}}
138 x43_u - x_int;
139 // expected-error@+1{{invalid operands to binary expression}}
140 x32_s * x_int;
141 // expected-error@+1{{invalid operands to binary expression}}
142 x32_u / x_int;
143 // expected-error@+1{{invalid operands to binary expression}}
144 x32_s * x_uint;
145 // expected-error@+1{{invalid operands to binary expression}}
146 x32_u / x_uint;
147 // expected-error@+1{{invalid operands to binary expression}}
148 x4_s + x_int;
149 // expected-error@+1{{invalid operands to binary expression}}
150 x4_u - x_int;
151 // expected-error@+1{{invalid operands to binary expression}}
152 x4_s + b;
153 // expected-error@+1{{invalid operands to binary expression}}
154 x4_u - b;
155 // expected-error@+1{{invalid operands to binary expression}}
156 x43_s + b;
157 // expected-error@+1{{invalid operands to binary expression}}
158 x43_u - b;
159
160 // Bitwise checks.
161 // expected-error@+1{{invalid operands to binary expression}}
162 x43_s % y4_u;
163 // expected-error@+1{{invalid operands to binary expression}}
164 x43_u % y4_s;
165 // expected-error@+1{{invalid operands to binary expression}}
166 x4_s | y43_u;
167 // expected-error@+1{{invalid operands to binary expression}}
168 x4_u | y43_s;
169
170 // compassign.
171 // expected-error@+1{{invalid operands to binary expression}}
172 x43_s += 33;
173
174 // Comparisons.
175 // expected-error@+1{{invalid operands to binary expression}}
176 x43_s > 33;
177 // expected-error@+1{{invalid operands to binary expression}}
178 x4_s > 33;
179
180 // Same size/sign ops don't change type.
181 static_assert(is_same<decltype(x43_s + y43_s), _ExtInt(43)>::value,"");
182 static_assert(is_same<decltype(x4_s - y4_s), _ExtInt(4)>::value,"");
183 static_assert(is_same<decltype(x43_u * y43_u), unsigned _ExtInt(43)>::value,"");
184 static_assert(is_same<decltype(x4_u / y4_u), unsigned _ExtInt(4)>::value,"");
185
186 // Unary ops shouldn't go through integer promotions.
187 static_assert(is_same<decltype(~x43_s), _ExtInt(43)>::value,"");
188 static_assert(is_same<decltype(~x4_s), _ExtInt(4)>::value,"");
189 static_assert(is_same<decltype(+x43_s), _ExtInt(43)>::value,"");
190 static_assert(is_same<decltype(+x4_s), _ExtInt(4)>::value,"");
191 static_assert(is_same<decltype(-x43_u), unsigned _ExtInt(43)>::value,"");
192 static_assert(is_same<decltype(-x4_u), unsigned _ExtInt(4)>::value,"");
193 // expected-warning@+1{{expression with side effects has no effect in an unevaluated context}}
194 static_assert(is_same<decltype(++x43_s), _ExtInt(43)&>::value,"");
195 // expected-warning@+1{{expression with side effects has no effect in an unevaluated context}}
196 static_assert(is_same<decltype(--x4_s), _ExtInt(4)&>::value,"");
197 // expected-warning@+1{{expression with side effects has no effect in an unevaluated context}}
198 static_assert(is_same<decltype(x43_s--), _ExtInt(43)>::value,"");
199 // expected-warning@+1{{expression with side effects has no effect in an unevaluated context}}
200 static_assert(is_same<decltype(x4_s++), _ExtInt(4)>::value,"");
201 static_assert(is_same<decltype(x4_s >> 1), _ExtInt(4)>::value,"");
202 static_assert(is_same<decltype(x4_u << 1), unsigned _ExtInt(4)>::value,"");
203
204 static_assert(sizeof(x43_s) == 8, "");
205 static_assert(sizeof(x4_s) == 1, "");
206
207 static_assert(sizeof(_ExtInt(3340)) == 424, ""); // 424 * 8 == 3392.
208 static_assert(sizeof(_ExtInt(1049)) == 136, ""); // 136 * 8 == 1088.
209
210 static_assert(alignof(decltype(x43_s)) == 8, "");
211 static_assert(alignof(decltype(x4_s)) == 1, "");
212
213 static_assert(alignof(_ExtInt(3340)) == 8, "");
214 static_assert(alignof(_ExtInt(1049)) == 8, "");
215 }
216
func()217 constexpr int func() { return 42;}
218
ConstexprBitsize()219 void ConstexprBitsize() {
220 _ExtInt(func()) F;
221 static_assert(is_same<decltype(F), _ExtInt(42)>::value, "");
222 }
223
224 // Useable as an underlying type.
225 enum AsEnumUnderlyingType : _ExtInt(33) {
226 };
227
228 void overloaded(int);
229 void overloaded(_ExtInt(32));
230 void overloaded(_ExtInt(33));
231 void overloaded(short);
232 //expected-note@+1{{candidate function}}
233 void overloaded2(_ExtInt(32));
234 //expected-note@+1{{candidate function}}
235 void overloaded2(_ExtInt(33));
236 //expected-note@+1{{candidate function}}
237 void overloaded2(short);
238
overload_use()239 void overload_use() {
240 int i;
241 _ExtInt(32) i32;
242 _ExtInt(33) i33;
243 short s;
244
245 // All of these get their corresponding exact matches.
246 overloaded(i);
247 overloaded(i32);
248 overloaded(i33);
249 overloaded(s);
250
251 overloaded2(i); // expected-error{{call to 'overloaded2' is ambiguous}}
252
253 overloaded2(i32);
254
255 overloaded2(s);
256 }
257
258 // no errors expected, this should 'just work'.
259 struct UsedAsBitField {
260 _ExtInt(3) F : 3;
261 _ExtInt(3) G : 3;
262 _ExtInt(3) H : 3;
263 };
264
265 // expected-error@+1{{mode attribute only supported for integer and floating-point types}}
266 typedef _ExtInt(33) IllegalMode __attribute__((mode(DI)));
267
268 void ImplicitCasts(_ExtInt(31) s31, _ExtInt(33) s33, int i) {
269 // expected-warning@+1{{implicit conversion loses integer precision}}
270 s31 = i;
271 // expected-warning@+1{{implicit conversion loses integer precision}}
272 s31 = s33;
273 s33 = i;
274 s33 = s31;
275 i = s31;
276 // expected-warning@+1{{implicit conversion loses integer precision}}
277 i = s33;
278 }
279
280 void Ternary(_ExtInt(30) s30, _ExtInt(31) s31a, _ExtInt(31) s31b,
281 _ExtInt(32) s32, bool b) {
282 b ? s30 : s31a; // expected-error{{incompatible operand types}}
283 b ? s31a : s30; // expected-error{{incompatible operand types}}
284 b ? s32 : (int)0; // expected-error{{incompatible operand types}}
285 (void)(b ? s31a : s31b);
286 (void)(s30 ? s31a : s31b);
287 }
288