/* Test macro expansions in in C23. */ /* { dg-do run } */ /* { dg-options "-std=c23 -pedantic-errors" } */ #include #define str(x) xstr(x) #define xstr(x) #x extern void abort (void); extern void exit (int); extern int strcmp (const char *, const char *); #if false - 1 >= 0 #error "false unsigned in #if" #endif #if false != 0 #error "false not 0 in #if" #endif #if true - 2 >= 0 #error "true unsigned in #if" #endif #if true != 1 #error "true not 1 in #if" #endif int main (void) { if (_Generic (true, _Bool : 1) != 1) abort (); if (true != 1) abort (); if (_Generic (false, _Bool : 1) != 1) abort (); if (false != 0) abort (); if (strcmp (str (__bool_true_false_are_defined), "1") != 0) abort (); exit (0); }