CDRIVER-5575 error on failure to init subdocument

Propagate error in `bson_iter_visit_all` when initializing subdocument with `bson_init_static` fails.

Author: Roman-Koshelev

src/libbson/src/bson/bson-iter.c

@@ -1944,7 +1944,11 @@ bson_iter_visit_all (bson_iter_t *iter,             /* INOUT */
 
          bson_iter_document (iter, &doclen, &docbuf);
 
-         if (bson_init_static (&b, docbuf, doclen) && VISIT_DOCUMENT (iter, key, &b, data)) {
+         if (!bson_init_static (&b, docbuf, doclen)) {
+            iter->err_off = iter->off;
+            break;
+         }
+         if (VISIT_DOCUMENT (iter, key, &b, data)) {
             return true;
          }
       } break;
@@ -1955,7 +1959,11 @@ bson_iter_visit_all (bson_iter_t *iter,             /* INOUT */
 
          bson_iter_array (iter, &doclen, &docbuf);
 
-         if (bson_init_static (&b, docbuf, doclen) && VISIT_ARRAY (iter, key, &b, data)) {
+         if (!bson_init_static (&b, docbuf, doclen)) {
+            iter->err_off = iter->off;
+            break;
+         }
+         if (VISIT_ARRAY (iter, key, &b, data)) {
             return true;
          }
       } break;
@@ -2079,7 +2087,11 @@ bson_iter_visit_all (bson_iter_t *iter,             /* INOUT */
             return true;
          }
 
-         if (bson_init_static (&b, docbuf, doclen) && VISIT_CODEWSCOPE (iter, key, length, code, &b, data)) {
+         if (!bson_init_static (&b, docbuf, doclen)) {
+            iter->err_off = iter->off;
+            break;
+         }
+         if (VISIT_CODEWSCOPE (iter, key, length, code, &b, data)) {
             return true;
          }
       } break;

src/libbson/tests/binary/test60.bson

@@ -1185,6 +1185,7 @@ test_bson_validate (void)
    VALIDATE_TEST ("test53.bson", BSON_VALIDATE_NONE, 6, BSON_VALIDATE_NONE, "corrupt BSON");
    VALIDATE_TEST ("test54.bson", BSON_VALIDATE_NONE, 12, BSON_VALIDATE_NONE, "corrupt BSON");
    VALIDATE_TEST ("test59.bson", BSON_VALIDATE_NONE, 9, BSON_VALIDATE_NONE, "corrupt BSON");
+   VALIDATE_TEST ("test60.bson", BSON_VALIDATE_NONE, 4, BSON_VALIDATE_NONE, "corrupt BSON");
 
    /* DBRef validation */
    b = BCON_NEW ("my_dbref", "{", "$ref", BCON_UTF8 ("collection"), "$id", BCON_INT32 (1), "}");