gcc/testsuite/gcc.dg/cpp/ucnid-11.c

   1 /* Test spelling differences in UCNs are properly diagnosed for macro
   2    redefinitions.  */
   3 /* { dg-do preprocess } */
   4 /* { dg-options "-std=c99 -pedantic-errors" } */
   5
   6 /* Different spelling of UCN in expansion.  */
   7 #define m1 \u00c1 /* { dg-message "previous definition" } */
   8 #define m1 \u00C1 /* { dg-error "redefined" } */
   9
  10 #define m1ok \u00c1
  11 #define m1ok \u00c1
  12
  13 /* Different spelling of UCN in argument name.  */
  14 #define m2(\u00c1) /* { dg-message "previous definition" } */
  15 #define m2(\u00C1) /* { dg-error "redefined" } */
  16
  17 #define m2ok(\u00c1)
  18 #define m2ok(\u00c1)
  19
  20 /* Same spelling in argument name but different spelling when used in
  21    expansion.  */
  22 #define m3(\u00c1) \u00c1 /* { dg-message "previous definition" } */
  23 #define m3(\u00c1) \u00C1 /* { dg-error "redefined" } */
  24
  25 #define m3ok(\u00c1) \u00C1
  26 #define m3ok(\u00c1) \u00C1
  27
  28 /* Different spelling of the macro name itself is OK.  */
  29 #define m4ok\u00c1
  30 #define m4ok\u00C1