clang/test/Preprocessor/embed_parameter_prefix.c

   1 // RUN: %clang_cc1 -std=c23 %s --embed-dir=%S/Inputs -fsyntax-only -verify
   2
   3 const char data[] = {
   4 #embed <single_byte.txt> prefix('\xA', )
   5 };
   6 const char empty_data[] = {
   7 #embed <media/empty> prefix('\xA', )
   8 1
   9 };
  10 static_assert(sizeof(data) == 2);
  11 static_assert('\xA' == data[0]);
  12 static_assert('b' == data[1]);
  13 static_assert(sizeof(empty_data) == 1);
  14 static_assert(1 == empty_data[0]);
  15
  16 struct S {
  17   int x, y, z;
  18 };
  19
  20 const struct S s = {
  21 #embed <single_byte.txt> prefix( .x = 100, .y = 10, )
  22 };
  23 static_assert(s.x == 100);
  24 static_assert(s.y == 10);
  25 static_assert(s.z == 'b');
  26
  27 // Ensure that an empty file does not produce any prefix tokens. If it did,
  28 // there would be random tokens here that the parser would trip on.
  29 #embed <media/empty> prefix(0)
  30
  31 // Ensure we diagnose duplicate parameters even if they're the same value.
  32 const unsigned char a[] = {
  33 #embed <jk.txt> prefix(1,) limit(1) prefix(1,)
  34 // expected-error@-1 {{cannot specify parameter 'prefix' twice in the same '#embed' directive}}
  35 ,
  36 #embed <jk.txt> prefix(1,) if_empty() prefix(2,)
  37 // expected-error@-1 {{cannot specify parameter 'prefix' twice in the same '#embed' directive}}
  38 };