blob: 182afdd1fa6f6b1024ffc47059ea14873711281d [file] [log] [blame]
 /* PR tree-optimization/86532 - Wrong code due to a wrong strlen folding starting with r262522 Exercise strlen() with a multi-dimensional array of strings with embedded nuls. */ extern __SIZE_TYPE__ strlen (const char*); static const char a[2][3][9] = { { "1", "1\0002" }, { "12\0003", "123\0004" } }; volatile int v0 = 0; volatile int v1 = 1; volatile int v2 = 2; volatile int v3 = 3; volatile int v4 = 4; volatile int v5 = 5; volatile int v6 = 6; volatile int v7 = 7; #define A(expr) \ ((expr) ? (void)0 : (__builtin_printf ("assertion on line %i: %s\n", \ __LINE__, #expr), \ __builtin_abort ())) void test_array_ref (void) { int i0 = 0; int i1 = i0 + 1; int i2 = i1 + 1; int i3 = i2 + 1; int i4 = i3 + 1; int i5 = i4 + 1; int i6 = i5 + 1; int i7 = i6 + 1; A (strlen (a[0][0]) == 1); A (strlen (a[0][1]) == 1); A (strlen (a[1][0]) == 2); A (strlen (a[1][1]) == 3); A (strlen (&a[0][0][0]) == 1); A (strlen (&a[0][1][0]) == 1); A (strlen (&a[1][0][0]) == 2); A (strlen (&a[1][1][0]) == 3); A (strlen (&a[0][0][0] + 1) == 0); A (strlen (&a[0][1][0] + 1) == 0); A (strlen (&a[0][1][0] + 2) == 1); A (strlen (&a[0][1][0] + 3) == 0); A (strlen (&a[0][1][0] + 7) == 0); A (strlen (&a[1][0][0] + 1) == 1); A (strlen (&a[1][1][0] + 1) == 2); A (strlen (&a[1][1][0] + 2) == 1); A (strlen (&a[1][1][0] + 7) == 0); A (strlen (a[i0][i0]) == 1); A (strlen (a[i0][i1]) == 1); A (strlen (a[i1][i0]) == 2); A (strlen (a[i1][i1]) == 3); A (strlen (&a[i0][i0][i0]) == 1); A (strlen (&a[i0][i1][i0]) == 1); A (strlen (&a[i0][i1][i1]) == 0); A (strlen (&a[i0][i1][i2]) == 1); A (strlen (&a[i0][i1][i3]) == 0); A (strlen (&a[i0][i1][i3]) == 0); A (strlen (&a[i1][i0][i0]) == 2); A (strlen (&a[i1][i1][i0]) == 3); A (strlen (&a[i1][i1][i1]) == 2); A (strlen (&a[i1][i1][i2]) == 1); A (strlen (&a[i1][i1][i3]) == 0); A (strlen (&a[i1][i1][i4]) == 1); A (strlen (&a[i1][i1][i5]) == 0); A (strlen (&a[i1][i1][i6]) == 0); A (strlen (&a[i1][i1][i7]) == 0); A (strlen (&a[i0][i0][i0] + i1) == 0); A (strlen (&a[i0][i1][i0] + i1) == 0); A (strlen (&a[i0][i1][i0] + i7) == 0); A (strlen (&a[i1][i0][i0] + i1) == 1); A (strlen (&a[i1][i1][i0] + i1) == 2); A (strlen (&a[i1][i1][i0] + i2) == 1); A (strlen (&a[i1][i1][i0] + i3) == 0); A (strlen (&a[i1][i1][i0] + i4) == 1); A (strlen (&a[i1][i1][i0] + i5) == 0); A (strlen (&a[i1][i1][i0] + i6) == 0); A (strlen (&a[i1][i1][i0] + i7) == 0); A (strlen (a[i0][i0]) == 1); A (strlen (a[i0][i1]) == 1); A (strlen (a[i1][i0]) == 2); A (strlen (a[i1][i1]) == 3); A (strlen (&a[i0][i0][i0]) == 1); A (strlen (&a[i0][i1][i0]) == 1); A (strlen (&a[i1][i0][i0]) == 2); A (strlen (&a[i1][i1][i0]) == 3); A (strlen (&a[i0][i0][i0] + v1) == 0); A (strlen (&a[i0][i0][i0] + v2) == 0); A (strlen (&a[i0][i0][i0] + v7) == 0); A (strlen (&a[i0][i1][i0] + v1) == 0); A (strlen (&a[i0][i1][i0] + v2) == 1); A (strlen (&a[i0][i1][i0] + v3) == 0); A (strlen (&a[i1][i0][i0] + v1) == 1); A (strlen (&a[i1][i1][i0] + v1) == 2); A (strlen (&a[i1][i1][i0] + v2) == 1); A (strlen (&a[i1][i1][i0] + v3) == 0); A (strlen (&a[i1][i1][i0] + v4) == 1); A (strlen (&a[i1][i1][i0] + v5) == 0); A (strlen (&a[i1][i1][i0] + v6) == 0); A (strlen (&a[i1][i1][i0] + v7) == 0); } int main (void) { test_array_ref (); }