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Subversion Repositories openrisc_2011-10-31
[/] [openrisc/] [tags/] [gnu-src/] [gcc-4.5.1/] [gcc-4.5.1-or32-1.0rc2/] [gcc/] [testsuite/] [g++.dg/] [opt/] [alias1.C] - Rev 384
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// Test that type punning using an anonymous union works with strict aliasing.
// { dg-do run }
// { dg-options "-O2 -fstrict-aliasing" }
extern "C" void abort ();
void f (long i)
{
union
{
long ui;
float uf[20];
};
ui = i;
if (uf[0] != 42.0)
abort ();
}
int main ()
{
union U { long i; float f[20]; } u;
u.f[0] = 42.0;
f (u.i);
}