1 | // RUN: %clang_cc1 -triple i686-win32 -fsyntax-only -fms-extensions -verify -std=c99 -DMS %s |
2 | // RUN: %clang_cc1 -triple x86_64-win32 -fsyntax-only -fms-extensions -verify -std=c11 -DMS %s |
3 | // RUN: %clang_cc1 -triple i686-mingw32 -fsyntax-only -fms-extensions -verify -std=c11 -DGNU %s |
4 | // RUN: %clang_cc1 -triple x86_64-mingw32 -fsyntax-only -fms-extensions -verify -std=c99 -DGNU %s |
5 | // RUN: %clang_cc1 -triple aarch64-win32 -fsyntax-only -fms-extensions -verify -std=c99 -DMS %s |
6 | |
7 | // Invalid usage. |
8 | __declspec(dllimport) typedef int typedef1; |
9 | // expected-warning@-1{{'dllimport' attribute only applies to functions, variables, classes, and Objective-C interfaces}} |
10 | typedef __declspec(dllimport) int typedef2; |
11 | // expected-warning@-1{{'dllimport' attribute only applies to}} |
12 | typedef int __declspec(dllimport) typedef3; |
13 | // expected-warning@-1{{'dllimport' attribute only applies to}} |
14 | typedef __declspec(dllimport) void (*FunTy)(); |
15 | // expected-warning@-1{{'dllimport' attribute only applies to}} |
16 | enum __declspec(dllimport) Enum { EnumVal }; |
17 | // expected-warning@-1{{'dllimport' attribute only applies to}} |
18 | struct __declspec(dllimport) Record {}; |
19 | // expected-warning@-1{{'dllimport' attribute only applies to}} |
20 | |
21 | |
22 | |
23 | //===----------------------------------------------------------------------===// |
24 | // Globals |
25 | //===----------------------------------------------------------------------===// |
26 | |
27 | // Import declaration. |
28 | __declspec(dllimport) extern int ExternGlobalDecl; |
29 | |
30 | // dllimport implies a declaration. |
31 | __declspec(dllimport) int GlobalDecl; |
32 | int **__attribute__((dllimport))* GlobalDeclChunkAttr; |
33 | int GlobalDeclAttr __attribute__((dllimport)); |
34 | |
35 | // Address of variables can't be used for initialization in C language modes. |
36 | int *VarForInit = &GlobalDecl; // expected-error{{initializer element is not a compile-time constant}} |
37 | |
38 | // Not allowed on definitions. |
39 | __declspec(dllimport) extern int ExternGlobalInit = 1; // expected-error{{definition of dllimport data}} |
40 | __declspec(dllimport) int GlobalInit1 = 1; // expected-error{{definition of dllimport data}} |
41 | int __declspec(dllimport) GlobalInit2 = 1; // expected-error{{definition of dllimport data}} |
42 | |
43 | // Declare, then reject definition. |
44 | #ifdef GNU |
45 | // expected-note@+2{{previous attribute is here}} |
46 | #endif |
47 | __declspec(dllimport) extern int ExternGlobalDeclInit; // expected-note{{previous declaration is here}} |
48 | #ifdef MS |
49 | // expected-warning@+4{{'ExternGlobalDeclInit' redeclared without 'dllimport' attribute: 'dllexport' attribute added}} |
50 | #else |
51 | // expected-warning@+2{{'ExternGlobalDeclInit' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}} |
52 | #endif |
53 | int ExternGlobalDeclInit = 1; |
54 | |
55 | #ifdef GNU |
56 | // expected-note@+2{{previous attribute is here}} |
57 | #endif |
58 | __declspec(dllimport) int GlobalDeclInit; // expected-note{{previous declaration is here}} |
59 | #ifdef MS |
60 | // expected-warning@+4{{'GlobalDeclInit' redeclared without 'dllimport' attribute: 'dllexport' attribute added}} |
61 | #else |
62 | // expected-warning@+2{{'GlobalDeclInit' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}} |
63 | #endif |
64 | int GlobalDeclInit = 1; |
65 | |
66 | #ifdef GNU |
67 | // expected-note@+2{{previous attribute is here}} |
68 | #endif |
69 | int *__attribute__((dllimport)) GlobalDeclChunkAttrInit; // expected-note{{previous declaration is here}} |
70 | #ifdef MS |
71 | // expected-warning@+4{{'GlobalDeclChunkAttrInit' redeclared without 'dllimport' attribute: 'dllexport' attribute added}} |
72 | #else |
73 | // expected-warning@+2{{'GlobalDeclChunkAttrInit' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}} |
74 | #endif |
75 | int *GlobalDeclChunkAttrInit = 0; |
76 | |
77 | #ifdef GNU |
78 | // expected-note@+2{{previous attribute is here}} |
79 | #endif |
80 | int GlobalDeclAttrInit __attribute__((dllimport)); // expected-note{{previous declaration is here}} |
81 | #ifdef MS |
82 | // expected-warning@+4{{'GlobalDeclAttrInit' redeclared without 'dllimport' attribute: 'dllexport' attribute added}} |
83 | #else |
84 | // expected-warning@+2{{'GlobalDeclAttrInit' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}} |
85 | #endif |
86 | int GlobalDeclAttrInit = 1; |
87 | |
88 | // Redeclarations |
89 | __declspec(dllimport) extern int GlobalRedecl1; |
90 | __declspec(dllimport) extern int GlobalRedecl1; |
91 | |
92 | __declspec(dllimport) int GlobalRedecl2a; |
93 | __declspec(dllimport) int GlobalRedecl2a; |
94 | |
95 | int *__attribute__((dllimport)) GlobalRedecl2b; |
96 | int *__attribute__((dllimport)) GlobalRedecl2b; |
97 | |
98 | int GlobalRedecl2c __attribute__((dllimport)); |
99 | int GlobalRedecl2c __attribute__((dllimport)); |
100 | |
101 | // We follow GCC and drop the dllimport with a warning. |
102 | __declspec(dllimport) extern int GlobalRedecl3; // expected-note{{previous declaration is here}} expected-note{{previous attribute is here}} |
103 | extern int GlobalRedecl3; // expected-warning{{'GlobalRedecl3' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}} |
104 | |
105 | // Adding an attribute on redeclaration. |
106 | extern int GlobalRedecl4; // expected-note{{previous declaration is here}} |
107 | int useGlobalRedecl4() { return GlobalRedecl4; } |
108 | __declspec(dllimport) extern int GlobalRedecl4; // expected-error{{redeclaration of 'GlobalRedecl4' cannot add 'dllimport' attribute}} |
109 | |
110 | // Allow with a warning if the decl hasn't been used yet. |
111 | extern int GlobalRedecl5; // expected-note{{previous declaration is here}} |
112 | __declspec(dllimport) extern int GlobalRedecl5; // expected-warning{{redeclaration of 'GlobalRedecl5' should not add 'dllimport' attribute}} |
113 | |
114 | |
115 | // External linkage is required. |
116 | __declspec(dllimport) static int StaticGlobal; // expected-error{{'StaticGlobal' must have external linkage when declared 'dllimport'}} |
117 | |
118 | // Thread local variables are invalid. |
119 | __declspec(dllimport) __thread int ThreadLocalGlobal; // expected-error{{'ThreadLocalGlobal' cannot be thread local when declared 'dllimport'}} |
120 | |
121 | // Import in local scope. |
122 | __declspec(dllimport) float LocalRedecl1; // expected-note{{previous declaration is here}} |
123 | __declspec(dllimport) float LocalRedecl2; // expected-note{{previous declaration is here}} |
124 | __declspec(dllimport) float LocalRedecl3; // expected-note{{previous declaration is here}} |
125 | __declspec(dllimport) float LocalRedecl4; |
126 | void functionScope() { |
127 | __declspec(dllimport) int LocalRedecl1; // expected-error{{redeclaration of 'LocalRedecl1' with a different type: 'int' vs 'float'}} |
128 | int *__attribute__((dllimport)) LocalRedecl2; // expected-error{{redeclaration of 'LocalRedecl2' with a different type: 'int *' vs 'float'}} |
129 | int LocalRedecl3 __attribute__((dllimport)); // expected-error{{redeclaration of 'LocalRedecl3' with a different type: 'int' vs 'float'}} |
130 | |
131 | __declspec(dllimport) int LocalVarDecl; |
132 | __declspec(dllimport) int LocalVarDef = 1; // expected-error{{definition of dllimport data}} |
133 | __declspec(dllimport) extern int ExternLocalVarDecl; |
134 | __declspec(dllimport) extern int ExternLocalVarDef = 1; // expected-error{{definition of dllimport data}} |
135 | __declspec(dllimport) static int StaticLocalVar; // expected-error{{'StaticLocalVar' must have external linkage when declared 'dllimport'}} |
136 | |
137 | // Local extern redeclaration does not drop the attribute. |
138 | extern float LocalRedecl4; |
139 | } |
140 | |
141 | |
142 | |
143 | //===----------------------------------------------------------------------===// |
144 | // Functions |
145 | //===----------------------------------------------------------------------===// |
146 | |
147 | // Import function declaration. Check different placements. |
148 | __attribute__((dllimport)) void decl1A(); // Sanity check with __attribute__ |
149 | __declspec(dllimport) void decl1B(); |
150 | |
151 | void __attribute__((dllimport)) decl2A(); |
152 | void __declspec(dllimport) decl2B(); |
153 | |
154 | // Address of functions can be used for initialization in C language modes. |
155 | // However, the address of the thunk wrapping the function is used instead of |
156 | // the address in the import address table. |
157 | void (*FunForInit)() = &decl2A; |
158 | |
159 | // Not allowed on function definitions. |
160 | __declspec(dllimport) void def() {} // expected-error{{dllimport cannot be applied to non-inline function definition}} |
161 | |
162 | // Import inline function. |
163 | #ifdef GNU |
164 | // expected-warning@+3{{'dllimport' attribute ignored on inline function}} |
165 | // expected-warning@+3{{'dllimport' attribute ignored on inline function}} |
166 | #endif |
167 | __declspec(dllimport) inline void inlineFunc1() {} |
168 | inline void __attribute__((dllimport)) inlineFunc2() {} |
169 | |
170 | // Redeclarations |
171 | __declspec(dllimport) void redecl1(); |
172 | __declspec(dllimport) void redecl1(); |
173 | |
174 | __declspec(dllimport) void redecl2(); // expected-note{{previous declaration is here}} expected-note{{previous attribute is here}} |
175 | void redecl2(); // expected-warning{{'redecl2' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}} |
176 | |
177 | #ifdef GNU |
178 | // expected-note@+2{{previous attribute is here}} |
179 | #endif |
180 | __declspec(dllimport) void redecl3(); // expected-note{{previous declaration is here}} |
181 | // NB: Both MSVC and Clang issue a warning and make redecl3 dllexport. |
182 | #ifdef MS |
183 | // expected-warning@+4{{'redecl3' redeclared without 'dllimport' attribute: 'dllexport' attribute added}} |
184 | #else |
185 | // expected-warning@+2{{'redecl3' redeclared without 'dllimport' attribute: previous 'dllimport' ignored}} |
186 | #endif |
187 | void redecl3() {} |
188 | |
189 | void redecl4(); // expected-note{{previous declaration is here}} |
190 | void useRedecl4() { redecl4(); } |
191 | __declspec(dllimport) void redecl4(); // expected-warning{{redeclaration of 'redecl4' should not add 'dllimport' attribute}} |
192 | |
193 | // Allow with a warning if the decl hasn't been used yet. |
194 | void redecl5(); // expected-note{{previous declaration is here}} |
195 | __declspec(dllimport) void redecl5(); // expected-warning{{redeclaration of 'redecl5' should not add 'dllimport' attribute}} |
196 | |
197 | |
198 | // Inline redeclarations. |
199 | #ifdef GNU |
200 | // expected-warning@+3{{'redecl6' redeclared inline; 'dllimport' attribute ignored}} |
201 | #endif |
202 | __declspec(dllimport) void redecl6(); |
203 | inline void redecl6() {} |
204 | |
205 | #ifdef MS |
206 | // expected-note@+5{{previous declaration is here}} |
207 | // expected-warning@+5{{redeclaration of 'redecl7' should not add 'dllimport' attribute}} |
208 | #else |
209 | // expected-warning@+3{{'dllimport' attribute ignored on inline function}} |
210 | #endif |
211 | void redecl7(); |
212 | __declspec(dllimport) inline void redecl7() {} |
213 | |
214 | // PR31069: Don't crash trying to merge attributes for redeclaration of invalid |
215 | // decl. |
216 | void __declspec(dllimport) redecl8(unknowntype X); // expected-error{{unknown type name 'unknowntype'}} |
217 | void redecl8(unknowntype X) { } // expected-error{{unknown type name 'unknowntype'}} |
218 | // PR32021: Similarly, don't crash trying to merge attributes from a valid |
219 | // decl to an invalid redeclaration. |
220 | void __declspec(dllimport) redecl9(void); // expected-note{{previous declaration is here}} |
221 | int redecl9(void) {} // expected-error{{conflicting types for 'redecl9'}} |
222 | |
223 | // External linkage is required. |
224 | __declspec(dllimport) static int staticFunc(); // expected-error{{'staticFunc' must have external linkage when declared 'dllimport'}} |
225 | |
226 | // Static locals don't count as having external linkage. |
227 | void staticLocalFunc() { |
228 | __declspec(dllimport) static int staticLocal; // expected-error{{'staticLocal' must have external linkage when declared 'dllimport'}} |
229 | } |
230 | |