diff options
Diffstat (limited to 'deps/v8/src/builtins/typed-array-set.tq')
| -rw-r--r-- | deps/v8/src/builtins/typed-array-set.tq | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/deps/v8/src/builtins/typed-array-set.tq b/deps/v8/src/builtins/typed-array-set.tq index b5c9dcb261..f4d2a40f41 100644 --- a/deps/v8/src/builtins/typed-array-set.tq +++ b/deps/v8/src/builtins/typed-array-set.tq @@ -281,7 +281,12 @@ TypedArrayPrototypeSetTypedArray(implicit context: Context, receiver: JSAny)( // value, true, Unordered). // iii. Set srcByteIndex to srcByteIndex + 1. // iv. Set targetByteIndex to targetByteIndex + 1. - CallCMemmove(dstPtr, typedArray.data_ptr, countBytes); + if (IsSharedArrayBuffer(target.buffer)) { + // SABs need a relaxed memmove to preserve atomicity. + CallCRelaxedMemmove(dstPtr, typedArray.data_ptr, countBytes); + } else { + CallCMemmove(dstPtr, typedArray.data_ptr, countBytes); + } } label IfSlow deferred { // 22. If target.[[ContentType]] is not equal to // typedArray.[[ContentType]], throw a TypeError exception. |