Viewing file:  20020510-1.c (1.26 KB) -rw-r--r--
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/* Copyright (C) 2002 Free Software Foundation.
Test that optimizing ((c>=1) && (c<=127)) into (signed char)c < 0
doesn't cause any problems for the compiler and behaves correctly.
Written by Roger Sayle, 8th May 2002. */
#include <limits.h>
extern void abort (void);
void
testc (unsigned char c, int ok)
{
if ((c>=1) && (c<=SCHAR_MAX))
{
if (!ok) abort ();
}
else
if (ok) abort ();
}
void
tests (unsigned short s, int ok)
{
if ((s>=1) && (s<=SHRT_MAX))
{
if (!ok) abort ();
}
else
if (ok) abort ();
}
void
testi (unsigned int i, int ok)
{
if ((i>=1) && (i<=INT_MAX))
{
if (!ok) abort ();
}
else
if (ok) abort ();
}
void
testl (unsigned long l, int ok)
{
if ((l>=1) && (l<=LONG_MAX))
{
if (!ok) abort ();
}
else
if (ok) abort ();
}
int
main ()
{
testc (0, 0);
testc (1, 1);
testc (SCHAR_MAX, 1);
testc (SCHAR_MAX+1, 0);
testc (UCHAR_MAX, 0);
tests (0, 0);
tests (1, 1);
tests (SHRT_MAX, 1);
tests (SHRT_MAX+1, 0);
tests (USHRT_MAX, 0);
testi (0, 0);
testi (1, 1);
testi (INT_MAX, 1);
testi (INT_MAX+1U, 0);
testi (UINT_MAX, 0);
testl (0, 0);
testl (1, 1);
testl (LONG_MAX, 1);
testl (LONG_MAX+1UL, 0);
testl (ULONG_MAX, 0);
return 0;
}
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