xref: /OK3568_Linux_fs/kernel/tools/memory-model/litmus-tests/CoWW+poonceonce.litmus (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593SmuzhiyunC CoWW+poonceonce
2*4882a593Smuzhiyun
3*4882a593Smuzhiyun(*
4*4882a593Smuzhiyun * Result: Never
5*4882a593Smuzhiyun *
6*4882a593Smuzhiyun * Test of write-write coherence, that is, whether or not two successive
7*4882a593Smuzhiyun * writes to the same variable are ordered.
8*4882a593Smuzhiyun *)
9*4882a593Smuzhiyun
10*4882a593Smuzhiyun{}
11*4882a593Smuzhiyun
12*4882a593SmuzhiyunP0(int *x)
13*4882a593Smuzhiyun{
14*4882a593Smuzhiyun	WRITE_ONCE(*x, 1);
15*4882a593Smuzhiyun	WRITE_ONCE(*x, 2);
16*4882a593Smuzhiyun}
17*4882a593Smuzhiyun
18*4882a593Smuzhiyunexists (x=1)
19