Mercurial > hg > CbC > CbC_gcc

annotate gcc/testsuite/gcc.dg/attr-may-alias-1.c @ 111:04ced10e8804

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
parents
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
111
kono
parents:
diff changeset
1 /* { dg-do compile } */
kono
parents:
diff changeset
2 /* { dg-options "-O2" } */
kono
parents:
diff changeset
3 /* { dg-final { scan-assembler "dont_delete" } } */
kono
parents:
diff changeset
4
kono
parents:
diff changeset
5 typedef struct { int x; } __attribute__((may_alias)) S;
kono
parents:
diff changeset
6
kono
parents:
diff changeset
7 extern void dont_delete (void);
kono
parents:
diff changeset
8
kono
parents:
diff changeset
9 void f(S *s, float *f)
kono
parents:
diff changeset
10 {
kono
parents:
diff changeset
11 s->x = 1;
kono
parents:
diff changeset
12 *f = 0;
kono
parents:
diff changeset
13 if (s->x != 1)
kono
parents:
diff changeset
14 dont_delete ();
kono
parents:
diff changeset
15 }