| // 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); | |
| } |