gcc/testsuite/gcc.dg/cpp/dir-only-1.c

   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