[njs] Fixed %TypedArray%.prototype.set(s) when s element changes "this".

[Dmitry Volyntsev]

details:   https://hg.nginx.org/njs/rev/62b475cce018
branches:  
changeset: 1992:62b475cce018
user:      Dmitry Volyntsev <xeioex at nginx.com>
date:      Mon Nov 07 14:22:41 2022 -0800
description:
Fixed %TypedArray%.prototype.set(s) when s element changes "this".

This closes #590 issue on Github.

diffstat:

 src/njs_typed_array.c    |  26 --------------------------
 src/test/njs_unit_test.c |   9 +++++++++
 2 files changed, 9 insertions(+), 26 deletions(-)

diffs (69 lines):

diff -r 3a9415ae3330 -r 62b475cce018 src/njs_typed_array.c
--- a/src/njs_typed_array.c	Mon Nov 07 14:22:41 2022 -0800
+++ b/src/njs_typed_array.c	Mon Nov 07 14:22:41 2022 -0800
@@ -694,7 +694,6 @@ njs_typed_array_prototype_set(njs_vm_t *
     int64_t             i, length, src_length, offset;
     njs_int_t           ret;
     njs_value_t         *this, *src, *value, prop;
-    njs_array_t         *array;
     njs_typed_array_t   *self, *src_tarray;
     njs_array_buffer_t  *buffer;
 
@@ -749,29 +748,6 @@ njs_typed_array_prototype_set(njs_vm_t *
         }
 
     } else {
-        if (njs_is_fast_array(src)) {
-            array = njs_array(src);
-            src_length = array->length;
-
-            if (njs_slow_path((src_length > length)
-                              || (offset > length - src_length)))
-            {
-                njs_range_error(vm, "source is too large");
-                return NJS_ERROR;
-            }
-
-            length = njs_min(array->length, length - offset);
-
-            for (i = 0; i < length; i++) {
-                ret = njs_value_to_number(vm, &array->start[i], &num);
-                if (ret == NJS_OK) {
-                    njs_typed_array_prop_set(vm, self, offset + i, num);
-                }
-            }
-
-            goto done;
-        }
-
         ret = njs_value_to_object(vm, src);
         if (njs_slow_path(ret != NJS_OK)) {
             return ret;
@@ -815,8 +791,6 @@ njs_typed_array_prototype_set(njs_vm_t *
         }
     }
 
-done:
-
     njs_set_undefined(&vm->retval);
 
     return NJS_OK;
diff -r 3a9415ae3330 -r 62b475cce018 src/test/njs_unit_test.c
--- a/src/test/njs_unit_test.c	Mon Nov 07 14:22:41 2022 -0800
+++ b/src/test/njs_unit_test.c	Mon Nov 07 14:22:41 2022 -0800
@@ -6585,6 +6585,15 @@ static njs_unit_test_t  njs_test[] =
               "           return a.toString() === '1,2,3,3'})"),
       njs_str("true") },
 
+    { njs_str(NJS_TYPED_ARRAY_LIST
+              ".every(v=>{ var a = [];"
+              "            var b = {toString() {a.length = 65535; return 99;}};"
+              "            for (var c = 0; c < 3; c++) { a[c] = b; }"
+              "            var ta = new v(6); ta.set(a);"
+              "            return ta.toString() == '99,99,99,0,0,0';"
+              "          })"),
+      njs_str("true") },
+
     { njs_str("(new Float32Array([255,255,NaN,3,NaN,Infinity,3,-Infinity,0,-0,2,1,-5])).slice(2).sort()"),
       njs_str("-Infinity,-5,0,0,1,2,3,3,Infinity,NaN,NaN") },