diff options
Diffstat (limited to 'gcc/testsuite/gcc.c-torture/execute/991014-1.c')
-rw-r--r-- | gcc/testsuite/gcc.c-torture/execute/991014-1.c | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.c-torture/execute/991014-1.c b/gcc/testsuite/gcc.c-torture/execute/991014-1.c new file mode 100644 index 000000000..e0bcd6d8b --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/execute/991014-1.c @@ -0,0 +1,54 @@ + +typedef __SIZE_TYPE__ Size_t; + +#if __SIZEOF_LONG__ < __SIZEOF_POINTER__ +#define bufsize ((1LL << (8 * sizeof(Size_t) - 2))-256) +#else +#define bufsize ((1L << (8 * sizeof(Size_t) - 2))-256) +#endif + +struct huge_struct +{ + short buf[bufsize]; + int a; + int b; + int c; + int d; +}; + +union huge_union +{ + int a; + char buf[bufsize]; +}; + +Size_t union_size() +{ + return sizeof(union huge_union); +} + +Size_t struct_size() +{ + return sizeof(struct huge_struct); +} + +Size_t struct_a_offset() +{ + return (Size_t)(&((struct huge_struct *) 0)->a); +} + +int main() +{ + /* Check the exact sizeof value. bufsize is aligned on 256b. */ + if (union_size() != sizeof(char) * bufsize) + abort(); + + if (struct_size() != sizeof(short) * bufsize + 4*sizeof(int)) + abort(); + + if (struct_a_offset() < sizeof(short) * bufsize) + abort(); + + return 0; +} + |