gcc/testsuite/gcc.dg/c99-left-shift-3.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-std=iso9899:1999 -pedantic-errors -Wno-shift-overflow" } */
   3
   4 #define INTM1 (sizeof (int) * __CHAR_BIT__ - 1)
   5
   6 enum { A = 1 << INTM1 }; /* { dg-error "constant expression" } */
   7 int k = 1 << INTM1; /* { dg-error "constant expression" } */
   8
   9 void
  10 fn (int i)
  11 {
  12   switch (i)
  13   case 1 << INTM1: break; /* { dg-error "constant expression" } */
  14 }