clang/test/Modules/stddef.c

   1 // RUN: rm -rf %t
   2 // RUN: %clang_cc1 -fmodules -fimplicit-module-maps -fbuiltin-headers-in-system-modules -fmodules-cache-path=%t -I%S/Inputs/StdDef %s -verify -fno-modules-error-recovery
   3 // RUN: rm -rf %t
   4 // RUN: %clang_cc1 -fmodules -fimplicit-module-maps -fmodules-cache-path=%t -I%S/Inputs/StdDef %s -verify -fno-modules-error-recovery
   5
   6 #include "ptrdiff_t.h"
   7
   8 ptrdiff_t pdt;
   9
  10 // size_t is declared in both size_t.h and __stddef_size_t.h, both of which are
  11 // modular headers. Regardless of whether stddef.h joins the StdDef test module
  12 // or is in its _Builtin_stddef module, __stddef_size_t.h will be in
  13 // _Builtin_stddef.size_t. It's not defined which module will win as the expected
  14 // provider of size_t. For the purposes of this test it doesn't matter which header
  15 // gets reported, just as long as it isn't other.h or include_again.h.
  16 size_t st; // expected-error-re {{missing '#include "{{size_t|__stddef_size_t}}.h"'; 'size_t' must be declared before it is used}}
  17 // expected-note@size_t.h:* 0+ {{here}}
  18 // expected-note@__stddef_size_t.h:* 0+ {{here}}
  19
  20 #include "include_again.h"
  21 // Includes <stddef.h> which includes <__stddef_size_t.h> which imports the
  22 // _Builtin_stddef.size_t module.
  23
  24 size_t st2;
  25
  26 #include "size_t.h"
  27 // Redeclares size_t, but the type merger should figure it out.
  28
  29 size_t st3;