clang/test/C/C2x/n2322.c

   1 // RUN: %clang_cc1 -std=c2x -ast-dump %s | FileCheck %s
   2
   3 /* WG14 N2322: partial
   4  * Preprocessor line numbers unspecified
   5  */
   6 void n2322() {
   7   // The line number associated with a pp-token should be the line number of
   8   // the first character of the pp-token.
   9   "this string literal  \
  10    spans multiple lines \
  11    before terminating";
  12 // CHECK: ImplicitCastExpr {{.*}} <line:9
  13 // CHECK-NEXT: StringLiteral {{.*}} <col:3>
  14
  15   // The line number associated with a pp-directive should be the line number
  16   // of the line with the first # token.
  17   // Possible FIXME: The AST node should be on line 1002 if we take the line
  18   // number to be associated with the first # token. However, this relies on an
  19   // interpretation of the standard definition of "presumed line" to be before
  20   // line splices are removed. The standard leaves this unspecified, so this
  21   // may not represent an actual issue.
  22   #\
  23   line\
  24   1000
  25   "string literal";
  26 // CHECK: ImplicitCastExpr {{.*}} <line:1000
  27 // CHECK: StringLiteral {{.*}} <col:3>
  28
  29   // The line number associated with a macro invocation should be the line
  30   // number of the first character of the macro name in the invocation.
  31   //
  32   // Reset the line number to make it easier to understand the next test.
  33   // FIXME: The line number should be 2005 (first letter of the macro name) and
  34   // not 2007 (closing parenthesis of the macro invocation).
  35   #line 2000
  36   #define F( \
  37     )        \
  38 _\
  39 _LINE__
  40
  41   _Static_assert(F(\
  42   \
  43   ) == 2007);
  44
  45   // Reset the line number again for ease.
  46   #line 2000
  47   _Static_assert(2001 == \
  48 __LI\
  49 NE__\
  50   );
  51 }