gcc/testsuite/gcc.dg/c90-const-expr-11.c

   1 /* Test for constant expressions: C90 aggregate initializers requiring
   2    constant expressions.  */
   3 /* Origin: Joseph Myers <joseph@codesourcery.com> */
   4 /* { dg-do compile } */
   5 /* { dg-options "-std=iso9899:1990 -pedantic-errors -O2 -fno-trapping-math" } */
   6
   7 #include <float.h>
   8 #include <limits.h>
   9
  10 double atan(double);
  11
  12 struct s { double d; };
  13 struct t { int i; };
  14
  15 void
  16 f (void)
  17 {
  18   /* As in PR 14649 for static initializers.  */
  19   struct s a = { atan (1.0) }; /* { dg-error "is not a constant expression|near initialization" } */
  20   /* Overflow.  */
  21   struct t b = { INT_MAX + 1 }; /* { dg-warning "integer overflow in expression" } */
  22   /* { dg-error "overflow in constant expression" "constant" { target *-*-* } .-1 } */
  23   struct t c = { DBL_MAX }; /* { dg-warning "overflow in conversion from .double. to .int. changes value " } */
  24   /* { dg-error "overflow in constant expression" "constant" { target *-*-* } .-1 } */
  25   /* Bad operator outside sizeof.  */
  26   struct s d = { 1 ? 1.0 : atan (a.d) }; /* { dg-error "is not a constant expression|near initialization" } */
  27 }