clang/test/Parser/decls.c

   1 // RUN: %clang_cc1 %s -fsyntax-only -verify -pedantic
   2
   3 // Test that we can parse declarations at global scope.
   4 int v;
   5
   6 void func(void) {
   7   // Test that we can parse declarations within a compound statement.
   8   int a;
   9   {
  10     int b;
  11   }
  12
  13   int z = ({ // expected-warning {{use of GNU statement expression extension}}
  14         // Test that we can parse declarations within a GNU statement expression.
  15         int w = 12;
  16         w;
  17   });
  18
  19   // Test that we diagnose declarations where a statement is required.
  20   // See GH92775.
  21   if (1)
  22     int x; // expected-error {{expected expression}}
  23   for (;;)
  24     int c; // expected-error {{expected expression}}
  25
  26   label:
  27     int y; // expected-warning {{label followed by a declaration is a C23 extension}}
  28
  29   // Test that lookup works as expected.
  30   (void)a;
  31   (void)v;
  32   (void)z;
  33   (void)b; // expected-error {{use of undeclared identifier 'b'}}
  34   (void)w; // expected-error {{use of undeclared identifier 'w'}}
  35   (void)x; // expected-error {{use of undeclared identifier 'x'}}
  36   (void)c; // expected-error {{use of undeclared identifier 'c'}}
  37   (void)y;
  38 }
  39