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/* PR tree-optimization/83776: missing -Warray-bounds indexing past the end
of a string literal
Test to exercise indices into wide string literals.
{ dg-do compile }
{ dg-options "-O2 -Warray-bounds -ftrack-macro-expansion=0" } */
#include "range.h"
#define MAX DIFF_MAX
#define MIN DIFF_MIN
typedef __WCHAR_TYPE__ wchar_t;
#define W2 L"12"
#define W3 L"123"
#define W4 L"1234"
#define W7 L"1234567"
#define W8 L"12345678"
#define W9 L"123456789"
void sink (int);
#define T(expr) sink (expr)
void wide_direct_cst (void)
{
T (W9[MIN]); /* { dg-warning "array subscript -\[0-9\]+ is below array bounds of .\[a-z \]+\\\[10]" "bug 86611" { xfail ilp32 } } */
T (W9[-1]); /* { dg-warning "array subscript -1 is below array bounds of .\[a-z \]+\\\[10]" } */
T (W9[11]); /* { dg-warning "array subscript 11 is above array bounds of .\[a-z \]+\\\[10]" } */
T (W9[MAX]); /* { dg-warning "array subscript \[0-9\]+ is above array bounds of .\[a-z \]+\\\[10]" } */
}
void wide_ptr_deref_cst (void)
{
const wchar_t *p = W8 + 9;
T (*p); /* { dg-warning "array subscript 9 is outside array bounds of .\[a-z \]+\\\[9]." } */
T (p[1]); /* { dg-warning "array subscript 10 is outside array bounds of .\[a-z \]+\\\[9]." } */
T (p[99]); /* { dg-warning "array subscript 108 is outside array bounds of .\[a-z \]+\\\[9]." } */
}
void wide_ptr_index_cst (void)
{
const wchar_t *p = W7;
T (p[1]);
T (p[8]); /* { dg-warning "array subscript 8 is outside array bounds of .\[a-z \]+\\\[8]." } */
T (p[99]); /* { dg-warning "array subscript 99 is outside array bounds of .\[a-z \]+\\\[8]." } */
T (p[MAX]); /* { dg-warning "array subscript -?\[0-9\]+ is outside array bounds of .\[a-z \]+\\\[8]." } */
}
void wide_direct_range (ptrdiff_t i, size_t j)
{
T (W9[i]);
T (W9[j]);
T (W9[SR (MIN, -9)]); /* { dg-warning "array subscript -9 is below array bounds of .\[a-z \]+\\\[10]" } */
T (W9[SR (MIN, -1)]); /* { dg-warning "array subscript -1 is below array bounds of .\[a-z \]+\\\[10]" } */
T (W9[SR (MIN, 0)]);
T (W9[SR (-2, -1)]); /* { dg-warning "array subscript -1 is below array bounds of .\[a-z \]+\\\[10]" } */
T (W9[SR (1, 2)]);
T (W9[SR (1, 9)]);
T (W9[SR (1, 999)]);
T (W9[SR (9, 999)]);
T (W9[SR (10, 999)]); /* { dg-warning "array subscript 10 is above array bounds of .\[a-z \]+\\\[10]" } */
T (W9[SR (99, MAX)]); /* { dg-warning "array subscript 99 is above array bounds of .\[a-z \]+\\\[10]" } */
}
void wide_ptr_deref_range (ptrdiff_t i, size_t j)
{
const wchar_t *p;
p = W8 + i;
T (*p);
p = W8 + j;
T (*p);
p = W8 + SR (-9, -1);
T (*p); /* { dg-warning "array subscript \\\[-9, -1] is outside array bounds of .\[a-z \]+\\\[9]." } */
p = W8 + SR (-9, 0);
T (*p);
p = W8 + SR (-9, 9);
T (*p);
p = W8 + SR (9, 123);
T (*p); /* { dg-warning "array subscript 9 is outside array bounds of .\[a-z \]+\\\[9]." } */
}
void wide_ptr_index_range (void)
{
const wchar_t *p;
p = W7;
T (p[SR (-9, -1)]); /* { dg-warning "array subscript \\\[-9, -1] is outside array bounds of .\[a-z \]+\\\[8]." } */
T (p[SR (-8, 0)]);
T (p[SR (0, MAX)]);
T (p[SR (1, 9)]);
T (p[SR (8, 9)]); /* { dg-warning "array subscript 8 is outside array bounds of .\[a-z \]+\\\[8]." } */
p = W7 + SR (4, 6);
T (p[5]); /* { dg-warning "array subscript \\\[9, 11] is outside array bounds of .\[a-z \]+\\\[8]." } */
}
void wide_ptr_index_range_1 (void)
{
{
int i = SR (1, 2);
const wchar_t *p1 = W2 + i;
T (p1[0]);
}
{
int i = SR (1, 2);
const wchar_t *p1 = W2 + i;
T (p1[1]);
}
{
int i = SR (1, 2);
const wchar_t *p1 = W2 + i;
T (p1[2]); /* { dg-warning "array subscript 3 is outside array bounds of .\[a-z \]+\\\[3]." } */
}
}
void wide_ptr_index_range_chain (void)
{
int i = SR (1, 2);
{
const wchar_t *p1 = W2 + i;
const wchar_t *p2 = p1 + i;
const wchar_t *p3 = p2 + i;
T (p1[-3]); /* { dg-warning "array subscript \\\[-2, -1] is outside array bounds of .\[a-z \]+\\\[3]." } */
T (p1[-2]);
T (p1[-1]);
T (p1[0]);
T (p1[1]);
T (p1[2]); /* { dg-warning "array subscript 3 is outside array bounds of .\[a-z \]+\\\[3]." } */
T (p2[-5]); /* { dg-warning "array subscript \\\[-3, -2] is outside array bounds of .\[a-z \]+\\\[3]." } */
T (p2[-4]); /* { dg-warning "array subscript \\\[-2, -1] is outside array bounds of .\[a-z \]+\\\[3]." } */
T (p2[-1]);
T (p2[0]);
T (p2[1]); /* { dg-warning "array subscript 3 is outside array bounds of .\[a-z \]+\\\[3]." } */
T (p3[0]); /* { dg-warning "array subscript 3 is outside array bounds of .\[a-z \]+\\\[3]." } */
T (p3[1]); /* { dg-warning "array subscript 4 is outside array bounds of .\[a-z \]+\\\[3]." } */
T (p3[9999]); /* { dg-warning "array subscript 10002 is outside array bounds of .\[a-z \]+\\\[3]." "" { target size20plus} } */
/* { dg-warning "array subscript \\\[-6382, -6379] is outside array bounds of .\[a-z \]+\\\[3]." "" { target { ! size20plus } } .-1 } */
/* Large offsets are indistinguishable from negative values. */
T (p3[DIFF_MAX]); /* { dg-warning "array subscript" "bug" { xfail *-*-* } } */
}
{
const wchar_t *p1 = W3 + i;
const wchar_t *p2 = p1 + i;
const wchar_t *p3 = p2 + i;
const wchar_t *p4 = p3 + i;
T (p1[-3]); /* { dg-warning "array subscript \\\[-2, -1] is outside array bounds of .\[a-z \]+\\\[4]." } */
T (p1[-2]);
T (p1[1]);
T (p1[2]);
T (p1[3]); /* { dg-warning "array subscript 4 is outside array bounds of .\[a-z \]+\\\[4]." } */
T (p3[1]); /* { dg-warning "array subscript 4 is outside array bounds of .\[a-z \]+\\\[4]." } */
}
}
void wide_ptr_index_range_4 (void)
{
int i = SR (1, 2);
const wchar_t *p1 = W4 + i;
const wchar_t *p2 = p1 + i;
const wchar_t *p3 = p2 + i;
const wchar_t *p4 = p3 + i;
T (p4[1]); /* { dg-warning "array subscript 5 is outside array bounds of .\[a-z \]+\\\[5]." } */
}
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