static struct avl_table *create_t1_glyph_tree(char **glyph_names)
{
    int i;
    void **aa;
    static struct avl_table *gl_tree;
    gl_tree = avl_create(comp_t1_glyphs, NULL, &avl_xallocator);
    assert(gl_tree != NULL);
    for (i = 0; i < 256; i++) {
        if (glyph_names[i] != notdef &&
            (char **) avl_find(gl_tree, &glyph_names[i]) == NULL) {
            /* no strdup here, just point to the glyph_names array members */
            aa = avl_probe(gl_tree, &glyph_names[i]);
            assert(aa != NULL);
        }
    }
    return gl_tree;
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.