1  /* Test for constant expressions: overflow and constant expressions
       2     with -fwrapv: overflows still count as such for the purposes of
       3     constant expressions even when they have defined values at
       4     runtime.  */
       5  /* Origin: Joseph Myers <joseph@codesourcery.com> */
       6  /* { dg-do compile } */
       7  /* { dg-options "-std=iso9899:1990 -pedantic-errors -fwrapv" } */
       8  
       9  #include <limits.h>
      10  
      11  enum e {
      12    E0 = 0 * (INT_MAX + 1), /* { dg-warning "21:integer overflow in expression" } */
      13    /* { dg-error "3:overflow in constant expression" "constant" { target *-*-* } .-1 } */
      14    E1 = 0 * (INT_MIN / -1), /* { dg-warning "21:integer overflow in expression" } */
      15    /* { dg-error "3:overflow in constant expression" "constant" { target *-*-* } .-1 } */
      16    E2 = 0 * (INT_MAX * INT_MAX), /* { dg-warning "21:integer overflow in expression" } */
      17    /* { dg-error "3:overflow in constant expression" "constant" { target *-*-* } .-1 } */
      18    E3 = 0 * (INT_MIN - 1), /* { dg-warning "21:integer overflow in expression" } */
      19    /* { dg-error "3:overflow in constant expression" "constant" { target *-*-* } .-1 } */
      20    E4 = 0 * (unsigned)(INT_MIN - 1), /* { dg-warning "31:integer overflow in expression" } */
      21    /* { dg-error "3:overflow in constant expression" "constant" { target *-*-* } .-1 } */
      22    E5 = 0 * -INT_MIN, /* { dg-warning "12:integer overflow in expression" } */
      23    /* { dg-error "3:overflow in constant expression" "constant" { target *-*-* } .-1 } */
      24    E6 = 0 * !-INT_MIN, /* { dg-warning "13:integer overflow in expression" } */
      25    /* { dg-error "8:not an integer constant" "constant" { target *-*-* } .-1 } */
      26    E7 = INT_MIN % -1 /* { dg-warning "16:integer overflow in expression" } */
      27    /* { dg-error "1:overflow in constant expression" "constant" { target *-*-* } .+1 } */
      28  };