URL https://opencores.org/ocsvn/openrisc/openrisc/trunk

Subversion Repositories openrisc

[/] [openrisc/] [trunk/] [gnu-old/] [gcc-4.2.2/] [gcc/] [testsuite/] [g++.dg/] [opt/] [alias1.C] - Diff between revs 154 and 816

Rev 154	Rev 816
`// Test that type punning using an anonymous union works with strict aliasing.`	`// Test that type punning using an anonymous union works with strict aliasing.`
`// { dg-do run }`	`// { dg-do run }`
`// { dg-options "-O2 -fstrict-aliasing" }`	`// { dg-options "-O2 -fstrict-aliasing" }`

`extern "C" void abort ();`	`extern "C" void abort ();`

`void f (long i)`	`void f (long i)`
`{`	`{`
`union`	`union`
`{`	`{`
`long ui;`	`long ui;`
`float uf[20];`	`float uf[20];`
`};`	`};`

`ui = i;`	`ui = i;`
`if (uf[0] != 42.0)`	`if (uf[0] != 42.0)`
`abort ();`	`abort ();`
`}`	`}`

`int main ()`	`int main ()`
`{`	`{`
`union U { long i; float f[20]; } u;`	`union U { long i; float f[20]; } u;`
`u.f[0] = 42.0;`	`u.f[0] = 42.0;`
`f (u.i);`	`f (u.i);`
`}`	`}`