gcc/testsuite/gcc.dg/c99-predef-1.c

   1 /* Verify that predefined macros for properties of the compiler and
   2    library together are the same before and after system headers are
   3    included.  This is broken with older glibc versions.  */
   4 /* { dg-do compile } */
   5 /* { dg-options "-std=iso9899:1999 -pedantic-errors" } */
   6
   7 #ifdef __STDC_IEC_559__
   8 #define IEC_559_DEFINED_BEFORE 1
   9 #else
  10 #define IEC_559_DEFINED_BEFORE 0
  11 #endif
  12
  13 #ifdef __STDC_IEC_559_COMPLEX__
  14 #define IEC_559_COMPLEX_DEFINED_BEFORE 1
  15 #else
  16 #define IEC_559_COMPLEX_DEFINED_BEFORE 0
  17 #endif
  18
  19 #ifdef __STDC_ISO_10646__
  20 #define ISO_10646_DEFINED_BEFORE 1
  21 #else
  22 #define ISO_10646_DEFINED_BEFORE 0
  23 #endif
  24
  25 #include <stdio.h>
  26
  27 #ifdef __STDC_IEC_559__
  28 #define IEC_559_DEFINED_AFTER 1
  29 #else
  30 #define IEC_559_DEFINED_AFTER 0
  31 #endif
  32
  33 #ifdef __STDC_IEC_559_COMPLEX__
  34 #define IEC_559_COMPLEX_DEFINED_AFTER 1
  35 #else
  36 #define IEC_559_COMPLEX_DEFINED_AFTER 0
  37 #endif
  38
  39 #ifdef __STDC_ISO_10646__
  40 #define ISO_10646_DEFINED_AFTER 1
  41 #else
  42 #define ISO_10646_DEFINED_AFTER 0
  43 #endif
  44
  45 #if defined(__GLIBC__) && (__GLIBC__ < 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ < 16))
  46 #define BROKEN
  47 #endif
  48
  49 #ifndef BROKEN
  50
  51 #if IEC_559_DEFINED_BEFORE != IEC_559_DEFINED_AFTER
  52 #error "__STDC_IEC_559__ definition inconsistency"
  53 #endif
  54
  55 #if IEC_559_COMPLEX_DEFINED_BEFORE != IEC_559_COMPLEX_DEFINED_AFTER
  56 #error "__STDC_IEC_559_COMPLEX__ definition inconsistency"
  57 #endif
  58
  59 #if ISO_10646_DEFINED_BEFORE != ISO_10646_DEFINED_AFTER
  60 #error "__STDC_ISO_10646__ definition inconsistency"
  61 #endif
  62
  63 #endif