diff options
Diffstat (limited to 'gcc/testsuite/c-c++-common/pr41935.c')
| -rw-r--r-- | gcc/testsuite/c-c++-common/pr41935.c | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/gcc/testsuite/c-c++-common/pr41935.c b/gcc/testsuite/c-c++-common/pr41935.c new file mode 100644 index 0000000..3279e75 --- /dev/null +++ b/gcc/testsuite/c-c++-common/pr41935.c @@ -0,0 +1,70 @@ +/* { dg-options "-Warray-bounds" } */ +/* { dg-do compile } */ + +struct A +{ + int i; + char p[1]; +}; + +struct B +{ + struct A a; + int i; +}; + +struct C +{ + int i; + struct A a; +}; + +union D +{ + char p[1]; + struct A a; + struct B b; + struct C c; +}; + +struct E +{ + int i; + union D d; +}; + +struct F +{ + union D d; + int i; +}; + +union G +{ + int i; + union D d; +}; + +void +f0 () +{ + __builtin_offsetof (struct A, p[4]); /* OK */ + __builtin_offsetof (struct B, a.p[4]); /* { dg-warning "greater than size" } */ + __builtin_offsetof (struct C, a.p[4]); /* OK */ + __builtin_offsetof (union D, p[4]); /* OK */ + __builtin_offsetof (union D, a.p[4]); /* OK */ + __builtin_offsetof (union D, b.a.p[4]); /* { dg-warning "greater than size" } */ + __builtin_offsetof (union D, c.a.p[4]); /* OK */ + __builtin_offsetof (struct E, d.p[4]); /* OK */ + __builtin_offsetof (struct E, d.a.p[4]); /* OK */ + __builtin_offsetof (struct E, d.b.a.p[4]); /* { dg-warning "greater than size" } */ + __builtin_offsetof (struct E, d.c.a.p[4]); /* OK */ + __builtin_offsetof (struct F, d.p[4]); /* { dg-warning "greater than size" } */ + __builtin_offsetof (struct F, d.a.p[4]); /* { dg-warning "greater than size" } */ + __builtin_offsetof (struct F, d.b.a.p[4]); /* { dg-warning "greater than size" } */ + __builtin_offsetof (struct F, d.c.a.p[4]); /* { dg-warning "greater than size" } */ + __builtin_offsetof (union G, d.p[4]); /* OK */ + __builtin_offsetof (union G, d.a.p[4]); /* OK */ + __builtin_offsetof (union G, d.b.a.p[4]); /* { dg-warning "greater than size" } */ + __builtin_offsetof (union G, d.c.a.p[4]); /* OK */ +} |