[Bug c/70646] Corrupt truncated function

[vda.linux at googlemail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70646

--- Comment #5 from Denis Vlasenko <vda.linux at googlemail dot com> ---
Even smaller reproducer.

Bug disappears if "__attribute__((always_inline))" is removed everywhere.


typedef unsigned char u8;
typedef unsigned int u32;
typedef unsigned long long u64;
static inline __attribute__((__const__)) u64 __fswab64(u64 val)
{
 return __builtin_bswap64(val);
}
static inline __attribute__((always_inline)) u64 __swab64p(const u64 *p)
{
 return (__builtin_constant_p((u64)(*p)) ? ((u64)( (((u64)(*p) &
(u64)0x00000000000000ffULL) << 56) | (((u64)(*p) & (u64)0x000000000000ff00ULL)
<< 40) | (((u64)(*p) & (u64)0x0000000000ff0000ULL) << 24) | (((u64)(*p) &
(u64)0x00000000ff000000ULL) << 8) | (((u64)(*p) & (u64)0x000000ff00000000ULL)
>> 8) | (((u64)(*p) & (u64)0x0000ff0000000000ULL) >> 24) | (((u64)(*p) &
(u64)0x00ff000000000000ULL) >> 40) | (((u64)(*p) & (u64)0xff00000000000000ULL)
>> 56))) : __fswab64(*p));
}
static inline __attribute__((always_inline)) u64 __be64_to_cpup(const u64 *p)
{
 return __swab64p((u64 *)p);
}
static inline __attribute__((always_inline)) u64 get_unaligned_be64(const void
*p)
{
 return __be64_to_cpup((u64 *)p);
}
static inline u64 wwn_to_u64(u8 *wwn)
{
 return get_unaligned_be64(wwn);
}

struct Scsi_Host {
 void *shost_data;
 unsigned long hostdata[0];
};
static inline void *shost_priv(struct Scsi_Host *shost)
{
 return (void *)shost->hostdata;
}
typedef struct scsi_qla_host {
 u8 fabric_node_name[8];
 u32 device_flags;
} scsi_qla_host_t;
struct fc_host_attrs {
 u64 fabric_name;
};

static void
qla2x00_get_host_fabric_name(struct Scsi_Host *shost)
{
 scsi_qla_host_t *vha = shost_priv(shost);
 u8 node_name[8] = { 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
 u64 fabric_name = wwn_to_u64(node_name);
 if (vha->device_flags & 0x1)
  fabric_name = wwn_to_u64(vha->fabric_node_name);
 (((struct fc_host_attrs *)(shost)->shost_data)->fabric_name) = fabric_name;
}

void *get_host_fabric_name = qla2x00_get_host_fabric_name;