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/* PR target/36533 */
/* { dg-do run { target { { i?86-*-linux* x86_64-*-linux* } && ilp32 } } } */
/* { dg-options "-Os" } */
#include <string.h>
#include <sys/mman.h>
#ifndef MAP_ANONYMOUS
#define MAP_ANONYMOUS MAP_ANON
#endif
typedef struct S1
{
unsigned long s1;
struct S1 *s2;
char *s3;
} S1;
typedef struct
{
unsigned int s4;
unsigned int s5;
int s6;
unsigned int *s7;
} S2;
typedef struct
{
unsigned int s8;
unsigned short s9;
unsigned char s10;
unsigned char s11;
char s12[255];
} S3;
typedef struct
{
unsigned int s4;
unsigned short s13;
unsigned short s14;
} S4;
typedef struct
{
char s15[16];
unsigned long s16;
} S5;
typedef struct
{
char s15[48];
S5 *s17;
} S6;
typedef struct
{
S1 *s18;
} S7;
__attribute__((regparm (3), noinline)) int
fn1 (const char *x, void *y, S1 *z)
{
asm volatile ("" : : : "memory");
return *x + (y != 0);
}
__attribute__((regparm (3), noinline)) int
fn2 (const char *x, int y, S2 *z)
{
asm volatile ("" : : : "memory");
return 0;
}
static inline __attribute__ ((always_inline)) unsigned int
fn4 (unsigned short x)
{
unsigned len = x;
if (len == ((1 << 16) - 1))
return 1 << 16;
return len;
}
static inline __attribute__ ((always_inline)) S3 *
fn3 (S3 *p)
{
return (S3 *) ((char *) p + fn4 (p->s9));
}
__attribute__((regparm (3), noinline)) int
fn5 (void)
{
asm volatile ("" : : : "memory");
return 0;
}
static inline __attribute__ ((always_inline)) int
fn6 (S3 *w, int x, S2 *y, S4 *z)
{
int a = 2;
char *b = (char *) w;
S2 c = *y;
while ((char *) w < b + x - 2 * sizeof (S4))
{
if (w->s10 && w->s8)
{
fn2 (w->s12, w->s10, &c);
z--;
z->s4 = c.s4;
z->s13 = (unsigned short) ((char *) w - b);
z->s14 = w->s9;
a++;
fn5 ();
}
w = fn3 (w);
}
return a;
}
__attribute__((regparm (3), noinline)) unsigned int
test (void *u, S6 *v, S1 **w, S7 *x, S2 *y, S1 *z)
{
unsigned b = v->s17->s16;
unsigned a;
S4 *c;
unsigned d, e, f, i;
fn1 (__func__, u, x->s18);
c = (S4 *) (z->s3 + b);
a = fn6 ((S3 *) (*w)->s3, b, y, c);
c -= a;
f = 0;
e = 2;
for (i = a - 1; ; i--)
{
if (f + (unsigned short) (c[i].s14 / 2) > b / 2)
break;
f += c[i].s14;
e++;
}
d = a - e;
return c[d].s4;
}
int main (void)
{
char *p = mmap (NULL, 131072, PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
S1 wb, z, *w;
S6 v;
S7 x;
S2 y;
S5 vb;
S4 s4;
if (p == MAP_FAILED)
return 0;
if (munmap (p + 65536, 65536) < 0)
return 0;
memset (&wb, 0, sizeof (wb));
memset (&z, 0, sizeof (z));
memset (&v, 0, sizeof (v));
memset (&x, 0, sizeof (x));
memset (&y, 0, sizeof (y));
memset (&vb, 0, sizeof (vb));
memset (&s4, 0, sizeof (s4));
s4.s14 = 254;
z.s3 = p + 65536 - 2 * sizeof (S4);
w = &wb;
v.s17 = &vb;
vb.s16 = 2 * sizeof (S4);
memcpy (z.s3, &s4, sizeof (s4));
memcpy (z.s3 + sizeof (s4), &s4, sizeof (s4));
test ((void *) 0, &v, &w, &x, &y, &z);
return 0;
}
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