Viewing file:  strlen-2.c (4.86 KB) -rw-r--r--
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/* PR tree-optimization/86532 - Wrong code due to a wrong strlen folding */
extern __SIZE_TYPE__ strlen (const char*);
static const char a[2][3] = { "1", "12" };
static const char b[2][2][5] = { { "1", "12" }, { "123", "1234" } };
volatile int v0 = 0;
volatile int v1 = 1;
volatile int v2 = 2;
#define A(expr) \
((expr) ? (void)0 : (__builtin_printf ("assertion on line %i: %s\n", \
__LINE__, #expr), \
__builtin_abort ()))
void test_array_ref_2_3 (void)
{
A (strlen (a[v0]) == 1);
A (strlen (&a[v0][v0]) == 1);
A (strlen (&a[0][v0]) == 1);
A (strlen (&a[v0][0]) == 1);
A (strlen (a[v1]) == 2);
A (strlen (&a[v1][0]) == 2);
A (strlen (&a[1][v0]) == 2);
A (strlen (&a[v1][v0]) == 2);
A (strlen (&a[v1][1]) == 1);
A (strlen (&a[v1][1]) == 1);
A (strlen (&a[v1][2]) == 0);
A (strlen (&a[v1][v2]) == 0);
int i0 = 0;
int i1 = i0 + 1;
int i2 = i1 + 1;
A (strlen (a[v0]) == 1);
A (strlen (&a[v0][v0]) == 1);
A (strlen (&a[i0][v0]) == 1);
A (strlen (&a[v0][i0]) == 1);
A (strlen (a[v1]) == 2);
A (strlen (&a[v1][i0]) == 2);
A (strlen (&a[i1][v0]) == 2);
A (strlen (&a[v1][v0]) == 2);
A (strlen (&a[v1][i1]) == 1);
A (strlen (&a[v1][i1]) == 1);
A (strlen (&a[v1][i2]) == 0);
A (strlen (&a[v1][v2]) == 0);
}
void test_array_off_2_3 (void)
{
A (strlen (a[0] + 0) == 1);
A (strlen (a[0] + v0) == 1);
A (strlen (a[v0] + 0) == 1);
A (strlen (a[v0] + v0) == 1);
A (strlen (a[v1] + 0) == 2);
A (strlen (a[1] + v0) == 2);
A (strlen (a[v1] + 0) == 2);
A (strlen (a[v1] + v0) == 2);
A (strlen (a[v1] + 1) == 1);
A (strlen (a[v1] + v1) == 1);
A (strlen (a[v1] + 2) == 0);
A (strlen (a[v1] + v2) == 0);
int i0 = 0;
int i1 = i0 + 1;
int i2 = i1 + 1;
A (strlen (a[i0] + i0) == 1);
A (strlen (a[i0] + v0) == 1);
A (strlen (a[v0] + i0) == 1);
A (strlen (a[v0] + v0) == 1);
A (strlen (a[v1] + i0) == 2);
A (strlen (a[i1] + v0) == 2);
A (strlen (a[v1] + i0) == 2);
A (strlen (a[v1] + v0) == 2);
A (strlen (a[v1] + i1) == 1);
A (strlen (a[v1] + v1) == 1);
A (strlen (a[v1] + i2) == 0);
A (strlen (a[v1] + v2) == 0);
}
void test_array_ref_2_2_5 (void)
{
A (strlen (b[0][v0]) == 1);
A (strlen (b[v0][0]) == 1);
A (strlen (&b[0][0][v0]) == 1);
A (strlen (&b[0][v0][0]) == 1);
A (strlen (&b[v0][0][0]) == 1);
A (strlen (&b[0][v0][v0]) == 1);
A (strlen (&b[v0][0][v0]) == 1);
A (strlen (&b[v0][v0][0]) == 1);
A (strlen (b[0][v1]) == 2);
A (strlen (b[v1][0]) == 3);
A (strlen (&b[0][0][v1]) == 0);
A (strlen (&b[0][v1][0]) == 2);
A (strlen (&b[v0][0][0]) == 1);
A (strlen (&b[0][v0][v0]) == 1);
A (strlen (&b[v0][0][v0]) == 1);
A (strlen (&b[v0][v0][0]) == 1);
A (strlen (&b[0][v1][v1]) == 1);
A (strlen (&b[v1][0][v1]) == 2);
A (strlen (&b[v1][v1][0]) == 4);
A (strlen (&b[v1][v1][1]) == 3);
A (strlen (&b[v1][v1][2]) == 2);
int i0 = 0;
int i1 = i0 + 1;
int i2 = i1 + 1;
A (strlen (b[i0][v0]) == 1);
A (strlen (b[v0][i0]) == 1);
A (strlen (&b[i0][i0][v0]) == 1);
A (strlen (&b[i0][v0][i0]) == 1);
A (strlen (&b[v0][i0][i0]) == 1);
A (strlen (&b[i0][v0][v0]) == 1);
A (strlen (&b[v0][i0][v0]) == 1);
A (strlen (&b[v0][v0][i0]) == 1);
A (strlen (b[i0][v1]) == 2);
A (strlen (b[v1][i0]) == 3);
A (strlen (&b[i0][i0][v1]) == 0);
A (strlen (&b[i0][v1][i0]) == 2);
A (strlen (&b[v0][i0][i0]) == 1);
A (strlen (&b[i0][v0][v0]) == 1);
A (strlen (&b[v0][i0][v0]) == 1);
A (strlen (&b[v0][v0][i0]) == 1);
A (strlen (&b[i0][v1][v1]) == 1);
A (strlen (&b[v1][i0][v1]) == 2);
A (strlen (&b[v1][v1][i0]) == 4);
A (strlen (&b[v1][v1][i1]) == 3);
A (strlen (&b[v1][v1][i2]) == 2);
}
void test_array_off_2_2_5 (void)
{
A (strlen (b[0][0] + v0) == 1);
A (strlen (b[0][v0] + v0) == 1);
A (strlen (b[v0][0] + v0) == 1);
A (strlen (b[v0][v0] + v0) == 1);
A (strlen (b[0][0] + v1) == 0);
A (strlen (b[0][v1] + 0) == 2);
A (strlen (b[v0][0] + 0) == 1);
A (strlen (b[0][v0] + v0) == 1);
A (strlen (b[v0][0] + v0) == 1);
A (strlen (b[v0][v0] + 0) == 1);
A (strlen (b[0][v1] + v1) == 1);
A (strlen (b[v1][0] + v1) == 2);
A (strlen (b[v1][v1] + 0) == 4);
A (strlen (b[v1][v1] + 1) == 3);
A (strlen (b[v1][v1] + 2) == 2);
int i0 = 0;
int i1 = i0 + 1;
int i2 = i1 + 1;
A (strlen (b[i0][i0] + v0) == 1);
A (strlen (b[i0][v0] + v0) == 1);
A (strlen (b[v0][i0] + v0) == 1);
A (strlen (b[v0][v0] + v0) == 1);
A (strlen (b[i0][i0] + v1) == 0);
A (strlen (b[i0][v1] + i0) == 2);
A (strlen (b[v0][i0] + i0) == 1);
A (strlen (b[i0][v0] + v0) == 1);
A (strlen (b[v0][i0] + v0) == 1);
A (strlen (b[v0][v0] + i0) == 1);
A (strlen (b[i0][v1] + v1) == 1);
A (strlen (b[v1][i0] + v1) == 2);
A (strlen (b[v1][v1] + i0) == 4);
A (strlen (b[v1][v1] + i1) == 3);
A (strlen (b[v1][v1] + i2) == 2);
}
int main ()
{
test_array_ref_2_3 ();
test_array_off_2_3 ();
test_array_ref_2_2_5 ();
test_array_off_2_2_5 ();
}
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