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[/] [scarts/] [trunk/] [toolchain/] [scarts-gcc/] [gcc-4.1.1/] [gcc/] [testsuite/] [g++.old-deja/] [g++.other/] [warn4.C] - Rev 12
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// { dg-do assemble }
// { dg-options "-Wconversion" }
// Copyright (C) 1999 Free Software Foundation, Inc.
// Contributed by Nathan Sidwell 21 Nov 1999 <nathan@acm.org>
// make sure we only warn on assigning a negative (signed) value
// to an unsigned type, and don't warn just if the unsigned value
// happens to have the top bit set.
typedef unsigned U;
void fn (unsigned);
void fu ()
{
unsigned s1 = -1u;
unsigned s2(-1u);
unsigned volatile s3 = -1u;
unsigned const s4 = -1u;
unsigned const &s5(-1u);
s1 = -1u;
fn (-1u);
}
void fU ()
{
U s1 = -1u;
U s2(-1u);
U volatile s3 = -1u;
U const s4 = -1u;
U const &s5(-1u);
s1 = -1u;
fn (-1u);
}
void fs ()
{
unsigned s1 = -1; // { dg-warning "" } initialization
unsigned s2(-1); // { dg-warning "" } initialization
unsigned volatile s3 = -1;// { dg-warning "" } initialization
unsigned const s4 = -1; // { dg-warning "" } initialization
unsigned const &s5(-1); // { dg-warning "" } initialization
s1 = -1; // { dg-warning "" } assignment
fn (-1); // { dg-warning "" } passing
}
void fss ()
{
unsigned s1 = -(-1);
unsigned s2(-(-1));
unsigned volatile s3 = -(-1);
unsigned const s4 = -(-1);
unsigned const &s5(-(-1));
s1 = -(-1);
fn (-(-1));
}
void fsz ()
{
unsigned s1 = -0;
unsigned s2(-0);
unsigned volatile s3 = -0;
unsigned const s4 = -0;
unsigned const &s5(-0);
s1 = -0;
fn (-0);
}