clang/test/Headers/stdargneeds.c

   1 // RUN: rm -fR %t
   2 // RUN: split-file %s %t
   3 // RUN: %clang_cc1 -fsyntax-only -verify -Werror=implicit-function-declaration -std=c89 %t/stdargneeds0.c
   4 // RUN: %clang_cc1 -fsyntax-only -verify=expected-modules -fmodules -fimplicit-module-maps -fmodules-cache-path=%t -Werror=implicit-function-declaration -std=c89 %t/stdargneeds0.c
   5 // RUN: %clang_cc1 -fsyntax-only -verify -Werror=implicit-function-declaration -std=c89 %t/stdargneeds1.c
   6 // RUN: %clang_cc1 -fsyntax-only -verify=expected-modules -fmodules -fimplicit-module-maps -fmodules-cache-path=%t -Werror=implicit-function-declaration -std=c89 %t/stdargneeds1.c
   7 // RUN: %clang_cc1 -fsyntax-only -verify -Werror=implicit-function-declaration -std=c89 %t/stdargneeds2.c
   8 // RUN: %clang_cc1 -fsyntax-only -verify=expected-modules -fmodules -fimplicit-module-maps -fmodules-cache-path=%t -Werror=implicit-function-declaration -std=c89 %t/stdargneeds2.c
   9 // RUN: %clang_cc1 -fsyntax-only -verify -Werror=implicit-function-declaration -std=c89 %t/stdargneeds3.c
  10 // RUN: %clang_cc1 -fsyntax-only -verify=expected-modules -fmodules -fimplicit-module-maps -fmodules-cache-path=%t -Werror=implicit-function-declaration -std=c89 %t/stdargneeds3.c
  11 // RUN: %clang_cc1 -fsyntax-only -verify -Werror=implicit-function-declaration -std=c89 %t/stdargneeds4.c
  12 // RUN: %clang_cc1 -fsyntax-only -verify=expected-modules -fmodules -fimplicit-module-maps -fmodules-cache-path=%t -Werror=implicit-function-declaration -std=c89 %t/stdargneeds4.c
  13 // RUN: %clang_cc1 -fsyntax-only -verify -Werror=implicit-function-declaration -std=c89 %t/stdargneeds5.c
  14 // RUN: %clang_cc1 -fsyntax-only -verify=expected-modules -fmodules -fimplicit-module-maps -fmodules-cache-path=%t -Werror=implicit-function-declaration -std=c89 %t/stdargneeds5.c
  15
  16 // Split the file so that the "implicitly declaring library function" errors get repeated.
  17 // Use C89 to verify that __need_ can be used to get types that wouldn't normally be available.
  18
  19 //--- stdargneeds0.c
  20 static void f(int p, ...) {
  21     __gnuc_va_list g; // expected-error{{undeclared identifier '__gnuc_va_list'}} expected-modules-error{{undeclared identifier}}
  22     va_list v; // expected-error{{undeclared identifier 'va_list'}} expected-modules-error{{undeclared identifier}}
  23     va_start(v, p); // expected-error{{implicitly declaring library function 'va_start'}} expected-note{{include the header <stdarg.h> or explicitly provide a declaration for 'va_start'}} expected-error{{undeclared identifier 'v'}} \
  24                        expected-modules-error{{implicitly declaring library function}} expected-modules-note{{provide a declaration}} expected-modules-error{{undeclared identifier}}
  25     int i = va_arg(v, int); // expected-error{{implicit declaration of function 'va_arg'}} expected-error{{expected expression}} expected-error{{use of undeclared identifier 'v'}} \
  26                                expected-modules-error{{implicit declaration of function}} expected-modules-error{{expected expression}} expected-modules-error{{undeclared identifier}}
  27     va_end(v); // expected-error{{implicitly declaring library function 'va_end'}} expected-note{{include the header <stdarg.h> or explicitly provide a declaration for 'va_end'}} expected-error{{undeclared identifier 'v'}} \
  28                   expected-modules-error{{implicitly declaring library function}} expected-modules-note{{provide a declaration}} expected-modules-error{{undeclared identifier}}
  29     __va_copy(g, v); // expected-error{{implicit declaration of function '__va_copy'}} expected-error{{use of undeclared identifier 'g'}} expected-error{{use of undeclared identifier 'v'}} \
  30                         expected-modules-error{{implicit declaration of function}} expected-modules-error{{undeclared identifier}} expected-modules-error{{undeclared identifier}}
  31     va_copy(g, v); // expected-error{{implicitly declaring library function 'va_copy'}} expected-note{{include the header <stdarg.h> or explicitly provide a declaration for 'va_copy'}} expected-error{{use of undeclared identifier 'g'}} expected-error{{use of undeclared identifier 'v'}} \
  32                       expected-modules-error{{implicitly declaring library function}} expected-modules-note{{provide a declaration}} expected-modules-error{{undeclared identifier}} expected-modules-error{{undeclared identifier}}
  33 }
  34
  35 //--- stdargneeds1.c
  36 #define __need___va_list
  37 #include <stdarg.h>
  38 static void f(int p, ...) {
  39     __gnuc_va_list g;
  40     va_list v; // expected-error{{undeclared identifier}} \
  41                   expected-modules-error{{'va_list' must be declared before it is used}} expected-modules-note@__stdarg_va_list.h:*{{declaration here is not visible}}
  42     va_start(v, p); // expected-error{{implicitly declaring library function}} expected-note{{provide a declaration}} expected-error{{undeclared identifier}} \
  43                        expected-modules-error{{implicitly declaring library function}} expected-modules-note{{provide a declaration}}
  44     int i = va_arg(v, int); // expected-error{{implicit declaration of function}} expected-error{{expected expression}} expected-error{{undeclared identifier}} \
  45                                expected-modules-error{{implicit declaration of function}} expected-modules-error{{expected expression}}
  46     va_end(v); // expected-error{{implicitly declaring library function}} expected-note{{provide a declaration}} expected-error{{undeclared identifier}} \
  47                   expected-modules-error{{implicitly declaring library function}} expected-modules-note{{provide a declaration}}
  48     __va_copy(g, v); // expected-error{{implicit declaration of function}} expected-error{{undeclared identifier}} \
  49                         expected-modules-error{{implicit declaration of function}}
  50     va_copy(g, v); // expected-error{{implicitly declaring library function}} expected-note{{provide a declaration}} expected-error{{undeclared identifier}} \
  51                       expected-modules-error{{implicitly declaring library function}} expected-modules-note{{provide a declaration}}
  52 }
  53
  54 //--- stdargneeds2.c
  55 #define __need_va_list
  56 #include <stdarg.h>
  57 static void f(int p, ...) {
  58     __gnuc_va_list g; // expected-error{{undeclared identifier}} \
  59                          expected-modules-error{{'__gnuc_va_list' must be declared before it is used}} expected-modules-note@__stdarg___gnuc_va_list.h:*{{declaration here is not visible}}
  60     va_list v;
  61     va_start(v, p); // expected-error{{implicitly declaring library function}} expected-note{{provide a declaration}} \
  62                        expected-modules-error{{implicitly declaring library function}} expected-modules-note{{provide a declaration}}
  63     int i = va_arg(v, int); // expected-error{{implicit declaration of function}} expected-error{{expected expression}} \
  64                                expected-modules-error{{implicit declaration of function}} expected-modules-error{{expected expression}}
  65     va_end(v); // expected-error{{implicitly declaring library function}} expected-note{{provide a declaration}} \
  66                   expected-modules-error{{implicitly declaring library function}} expected-modules-note{{provide a declaration}}
  67     __va_copy(g, v); // expected-error{{implicit declaration of function}} expected-error{{undeclared identifier}} \
  68                         expected-modules-error{{implicit declaration of function}}
  69     va_copy(g, v); // expected-error{{implicitly declaring library function}} expected-note{{provide a declaration}} expected-error{{undeclared identifier}} \
  70                       expected-modules-error{{implicitly declaring library function}} expected-modules-note{{provide a declaration}}
  71 }
  72
  73 //--- stdargneeds3.c
  74 #define __need_va_list
  75 #define __need_va_arg
  76 #include <stdarg.h>
  77 static void f(int p, ...) {
  78     __gnuc_va_list g; // expected-error{{undeclared identifier}} \
  79                          expected-modules-error{{'__gnuc_va_list' must be declared before it is used}} expected-modules-note@__stdarg___gnuc_va_list.h:*{{declaration here is not visible}}
  80     va_list v;
  81     va_start(v, p);
  82     int i = va_arg(v, int);
  83     va_end(v);
  84     __va_copy(g, v); // expected-error{{implicit declaration of function}} expected-error{{undeclared identifier}} \
  85                         expected-modules-error{{implicit declaration of function}}
  86     va_copy(g, v); // expected-error{{implicitly declaring library function}} expected-note{{provide a declaration}} expected-error{{undeclared identifier}} \
  87                       expected-modules-error{{implicitly declaring library function}} expected-modules-note{{provide a declaration}}
  88 }
  89
  90 //--- stdargneeds4.c
  91 #define __need___va_list
  92 #define __need_va_list
  93 #define __need___va_copy
  94 #include <stdarg.h>
  95 static void f(int p, ...) {
  96     __gnuc_va_list g;
  97     va_list v;
  98     va_start(v, p); // expected-error{{implicitly declaring library function}} expected-note{{provide a declaration}} \
  99                        expected-modules-error{{implicitly declaring library function}} expected-modules-note{{provide a declaration}}
 100     int i = va_arg(v, int); // expected-error{{implicit declaration of function}} expected-error{{expected expression}} \
 101                                expected-modules-error{{implicit declaration of function}} expected-modules-error{{expected expression}}
 102     va_end(v); // expected-error{{implicitly declaring library function}} expected-note{{provide a declaration}} \
 103                   expected-modules-error{{implicitly declaring library function}} expected-modules-note{{provide a declaration}}
 104     __va_copy(g, v);
 105     va_copy(g, v); // expected-error{{implicitly declaring library function}} expected-note{{provide a declaration}} \
 106                       expected-modules-error{{implicitly declaring library function}} expected-modules-note{{provide a declaration}}
 107 }
 108
 109 //--- stdargneeds5.c
 110 #define __need___va_list
 111 #define __need_va_list
 112 #define __need_va_copy
 113 #include <stdarg.h>
 114 static void f(int p, ...) {
 115     __gnuc_va_list g;
 116     va_list v;
 117     va_start(v, p); // expected-error{{implicitly declaring library function}} expected-note{{provide a declaration}} \
 118                        expected-modules-error{{implicitly declaring library function}} expected-modules-note{{provide a declaration}}
 119     int i = va_arg(v, int); // expected-error{{implicit declaration of function}} expected-error{{expected expression}} \
 120                                expected-modules-error{{implicit declaration of function}} expected-modules-error{{expected expression}}
 121     va_end(v); // expected-error{{implicitly declaring library function}} expected-note{{provide a declaration}} \
 122                   expected-modules-error{{implicitly declaring library function}} expected-modules-note{{provide a declaration}}
 123     __va_copy(g, v); // expected-error{{implicit declaration of function}} expected-modules-error{{implicit declaration of function}}
 124     va_copy(g, v);
 125 }