Viewing file:  pr20601-1.c (1.7 KB) -rw-r--r--
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/* PR tree-optimization/20601 */
extern void abort (void);
extern void exit (int);
struct T
{
char *t1;
char t2[4096];
char **t3;
};
int a[5];
int b;
char **c;
int d;
char **e;
struct T t;
char *f[16];
char *g[] = { "a", "-u", "b", "c" };
__attribute__ ((__noreturn__)) void
foo (void)
{
while (1);
}
__attribute__ ((noinline)) char *
bar (char *x, unsigned int y)
{
return 0;
}
static inline char *
baz (char *x, unsigned int y)
{
if (sizeof (t.t2) != (unsigned int) -1 && y > sizeof (t.t2))
foo ();
return bar (x, y);
}
static inline int
setup1 (int x)
{
char *p;
int rval;
if (!baz (t.t2, sizeof (t.t2)))
baz (t.t2, sizeof (t.t2));
if (x & 0x200)
{
char **h, **i = e;
++d;
e = f;
if (t.t1 && *t.t1)
e[0] = t.t1;
else
abort ();
for (h = e + 1; (*h = *i); ++i, ++h)
;
}
return 1;
}
static inline int
setup2 (void)
{
int j = 1;
e = c + 1;
d = b - 1;
while (d > 0 && e[0][0] == '-')
{
if (e[0][1] != '\0' && e[0][2] != '\0')
abort ();
switch (e[0][1])
{
case 'u':
if (!e[1])
abort ();
t.t3 = &e[1];
d--;
e++;
break;
case 'P':
j |= 0x1000;
break;
case '-':
d--;
e++;
if (j == 1)
j |= 0x600;
return j;
}
d--;
e++;
}
if (d > 0 && !(j & 1))
abort ();
return j;
}
int
main (void)
{
int x;
c = g;
b = 4;
x = setup2 ();
t.t1 = "/bin/sh";
setup1 (x);
/* PRE shouldn't transform x into the constant 0x601 here, it's not legal. */
if ((x & 0x400) && !a[4])
abort ();
exit (0);
}
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