1  /* Copyright 2007 Free Software Foundation, Inc.
       2     Contributed by Ollie Wild <aaw@google.com>.  */
       3  
       4  /* { dg-do preprocess } */
       5  /* { dg-options -fdirectives-only } */
       6  
       7  /* Tests scan_translation_unit_directives_only()'s handling of corner cases. */
       8  
       9  /* Ignore directives inside block comments...
      10  #error directive inside block comment
      11  */
      12  
      13  // Escaped newline doesn't terminate line comment \
      14  #error directive inside line comment
      15  
      16  /* A comment canot start inside a string. */
      17  const char *c1 = "/*";
      18  #define NOT_IN_COMMENT
      19  const char *c2 = "*/";
      20  #ifndef NOT_IN_COMMENT
      21  #error Comment started inside a string literal
      22  #endif
      23  
      24  /* Escaped newline handling. */
      25  int i; \
      26  #error ignored escaped newline
      27    \
      28    \
      29  #define BOL
      30  #ifndef BOL
      31  #error escaped newline did not preserve beginning of line
      32  #endif
      33  
      34  /* Handles \\ properly at the end of a string. */
      35  "string ends in \\"/*
      36  #error Missed string terminator.
      37  */
      38  
      39  /* Handles macro expansion in preprocessing directives. */
      40  #define HEADER "dir-only-1.h"
      41  #include HEADER
      42  #ifndef GOT_HEADER
      43  #error Failed to include header.
      44  #endif
      45  
      46  /\
      47  *
      48  #define IN_COMMENT
      49  */
      50  #ifdef IN_COMMENT
      51  #error Escaped newline breaks block comment initiator.
      52  #endif
      53  
      54  /*
      55  *\
      56  /
      57  #define NOT_IN_COMMENT2
      58  /**/
      59  #ifndef NOT_IN_COMMENT2
      60  #error Escaped newline breaks block comment terminator.
      61  #endif
      62  
      63  /* Test escaped newline inside character escape sequence. */
      64  "\\
      65  \"/*
      66  #error Missed string terminator
      67  */
      68  
      69  /* Block comments don't mask trailing preprocessing
      70     directive. */ #define NOT_MASKED
      71  #ifndef NOT_MASKED
      72  #error Comment masks trailing directive.
      73  #endif