xref: /llvm-project/clang/test/Sema/implicit-int.c (revision 0f1c1be1968076d6f96f8a7bcc4a15cf195ecd97)
1 /* RUN: %clang_cc1 -fsyntax-only -std=c89 -Wimplicit-int %s -verify -Wno-strict-prototypes
2    RUN: %clang_cc1 -fsyntax-only -std=c99 %s -verify=ext -Wno-strict-prototypes
3    RUN: %clang_cc1 -fsyntax-only -std=c2x %s -verify=unsupported
4 */
5 
foo(void)6 foo(void) { /* expected-warning {{type specifier missing, defaults to 'int'}} \
7                ext-error {{type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int}} \
8                unsupported-error {{a type specifier is required for all declarations}} */
9   return 0;
10 }
11 
12 y;  /* expected-warning {{type specifier missing, defaults to 'int'}} \
13        ext-error {{type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int}} \
14        unsupported-error {{a type specifier is required for all declarations}} */
15 
16 void f((x));  /* expected-warning {{type specifier missing, defaults to 'int'}} \
17                  ext-error {{type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int}} \
18                  unsupported-error {{a type specifier is required for all declarations}} */
19 
20 /* PR3702 */
21 #define PAD(ms10) { \
22     register i;     \
23 }
24 
25 #define ILPAD() PAD((NROW - tt.tt_row) * 10) /* 1 ms per char */
26 
27 void
h19_insline(n)28 h19_insline(n)  /* ext-error {{parameter 'n' was not declared, defaults to 'int'; ISO C99 and later do not support implicit int}} \
29                    unsupported-error {{unknown type name 'n'}} */
30 {
31   ILPAD();  /* expected-warning {{type specifier missing, defaults to 'int'}} \
32                ext-error {{type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int}} \
33                unsupported-error {{a type specifier is required for all declarations}} */
34 
35 }
36 
37 struct foo {
38  __extension__ __attribute__((packed)) x : 4; /* expected-warning {{type specifier missing, defaults to 'int'}} \
39                                                  ext-error {{type specifier missing, defaults to 'int'; ISO C99 and later do not support implicit int}} \
40                                                  unsupported-error {{unknown type name 'x'}} */
41 
42 };
43