diff options
Diffstat (limited to 'gcc-4.9/gcc/testsuite/gcc.dg/c99-const-expr-9.c')
| -rw-r--r-- | gcc-4.9/gcc/testsuite/gcc.dg/c99-const-expr-9.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/c99-const-expr-9.c b/gcc-4.9/gcc/testsuite/gcc.dg/c99-const-expr-9.c new file mode 100644 index 000000000..11e0b2c08 --- /dev/null +++ b/gcc-4.9/gcc/testsuite/gcc.dg/c99-const-expr-9.c @@ -0,0 +1,26 @@ +/* Test for constant expressions: __builtin_offsetof allowed in + integer constant expressions but not traditional offsetof + expansion. */ +/* Origin: Joseph Myers <joseph@codesourcery.com> */ +/* { dg-do compile } */ +/* { dg-options "-std=iso9899:1999 -pedantic-errors -ftrack-macro-expansion=0" } */ + +struct s { + int a; +}; + +struct t { + struct s a; + int b[2]; +}; + +#define old_offsetof(TYPE, MEMBER) ((__SIZE_TYPE__)(__UINTPTR_TYPE__) &((TYPE *)0)->MEMBER) + +enum e { + E1 = old_offsetof (struct s, a), /* { dg-error "constant" } */ + E2 = old_offsetof (struct t, a.a), /* { dg-error "constant" } */ + E3 = old_offsetof (struct t, b[1]), /* { dg-error "constant" } */ + E4 = __builtin_offsetof (struct s, a), + E5 = __builtin_offsetof (struct t, a.a), + E6 = __builtin_offsetof (struct t, b[1]) +}; |