Viewing file:  990211-1.c (1.16 KB) -rw-r--r--
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/* Copyright (C) 1999 Free Software Foundation, Inc.
Contributed by Nathan Sidwell 20 Jan 1999 <nathan@acm.org> */
/* check range combining boolean operations work */
extern void abort();
#define N 77
void func(int i)
{
/* fold-const does some clever things with range tests. Make sure
we get (some of) them right */
/* these must fail, regardless of the value of i */
if ((i < 0) && (i >= 0))
abort();
if ((i > 0) && (i <= 0))
abort();
if ((i >= 0) && (i < 0))
abort();
if ((i <= 0) && (i > 0))
abort();
if ((i < N) && (i >= N))
abort();
if ((i > N) && (i <= N))
abort();
if ((i >= N) && (i < N))
abort();
if ((i <= N) && (i > N))
abort();
/* these must pass, regardless of the value of i */
if (! ((i < 0) || (i >= 0)))
abort();
if (! ((i > 0) || (i <= 0)))
abort();
if (! ((i >= 0) || (i < 0)))
abort();
if (! ((i <= 0) || (i > 0)))
abort();
if (! ((i < N) || (i >= N)))
abort();
if (! ((i > N) || (i <= N)))
abort();
if (! ((i >= N) || (i < N)))
abort();
if (! ((i <= N) || (i > N)))
abort();
return;
}
int main()
{
func(0);
func(1);
return 0;
}
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