Bug 1562667 - P4a - Enable SAB by default on nightly; r=bzbarsky,luke

This patch mainly enables the pref for SharedArrayBuffer on Nightly.

This change causes some tests to fail. This patch handles the failures for
mochitests and web-platform-tests. The jsreftest will be handled in the next
patch.

For mochitests:
- dom/serviceworkers/test/test_serviceworker_interfaces.js
- dom/tests/mochitest/general/test_interfaces.js
- dom/workers/test/test_worker_interfaces.js

These tests check which interfaces are exposed on the web. Since we are now
exposing SharedArrayBuffer in some configurations, the tests need to be adjusted
accordingly.

For the rest of tests in this patch:
- testing/web-platform/meta/encoding/encodeInto.any.js.ini
This test partially fails because the integration of encoding and SAB is not
completely supported yet.

- testing/web-platform/meta/encoding/streams/decode-utf8.any.js.ini
This test partially fails because the integration of decoding and SAB is not
completely supported yet.

- testing/web-platform/meta/html/webappapis/scripting/processing-model-2/integration-with-the-javascript-agent-formalism/requires-failure.https.any.js.ini
- testing/web-platform/meta/html/webappapis/scripting/processing-model-2/integration-with-the-javascript-agent-formalism/requires-success.any.js.ini
- testing/web-platform/meta/wasm/jsapi/memory/constructor.any.js.ini
- testing/web-platform/meta/wasm/jsapi/memory/grow.any.js.ini
The subtests related to SAB in these tests now pass when SAB is enabled, so we
need to annotate them as failing only in configurations where SAB is disabled.

- testing/web-platform/meta/webaudio/the-audio-api/the-audiobuffer-interface/audiobuffer-copy-channel.html.ini
This test partially fails because there are some issues between SAB and Audio.

Differential Revision: https://phabricator.services.mozilla.com/D48838

--HG--
extra : moz-landing-system : lando

dom/serviceworkers/test/test_serviceworker_interfaces.js

@@ -25,7 +25,7 @@ var ecmaGlobals = [
   { name: "AggregateError", nightly: true },
   "Array",
   "ArrayBuffer",
-  { name: "Atomics", disabled: true },
+  { name: "Atomics", nightly: true },
   "Boolean",
   "BigInt",
   "BigInt64Array",
@@ -59,7 +59,7 @@ var ecmaGlobals = [
   "Reflect",
   "RegExp",
   "Set",
-  { name: "SharedArrayBuffer", disabled: true },
+  { name: "SharedArrayBuffer", nightly: true },
   "String",
   "Symbol",
   "SyntaxError",

dom/tests/mochitest/general/test_interfaces.js

@@ -52,7 +52,7 @@ var ecmaGlobals = [
   { name: "AggregateError", insecureContext: true, nightly: true },
   { name: "Array", insecureContext: true },
   { name: "ArrayBuffer", insecureContext: true },
-  { name: "Atomics", insecureContext: true, disabled: true },
+  { name: "Atomics", insecureContext: true, nightly: true },
   { name: "BigInt", insecureContext: true },
   { name: "BigInt64Array", insecureContext: true },
   { name: "BigUint64Array", insecureContext: true },
@@ -86,7 +86,11 @@ var ecmaGlobals = [
   { name: "Reflect", insecureContext: true },
   { name: "RegExp", insecureContext: true },
   { name: "Set", insecureContext: true },
-  { name: "SharedArrayBuffer", insecureContext: true, disabled: true },
+  {
+    name: "SharedArrayBuffer",
+    insecureContext: true,
+    nightly: true,
+  },
   { name: "String", insecureContext: true },
   { name: "Symbol", insecureContext: true },
   { name: "SyntaxError", insecureContext: true },

dom/workers/test/test_worker_interfaces.js

@@ -31,7 +31,7 @@ var ecmaGlobals = [
   { name: "AggregateError", insecureContext: true, nightly: true },
   { name: "Array", insecureContext: true },
   { name: "ArrayBuffer", insecureContext: true },
-  { name: "Atomics", insecureContext: true, disabled: true },
+  { name: "Atomics", insecureContext: true, nightly: true },
   { name: "BigInt", insecureContext: true },
   { name: "BigInt64Array", insecureContext: true },
   { name: "BigUint64Array", insecureContext: true },
@@ -67,7 +67,11 @@ var ecmaGlobals = [
   { name: "Reflect", insecureContext: true },
   { name: "RegExp", insecureContext: true },
   { name: "Set", insecureContext: true },
-  { name: "SharedArrayBuffer", insecureContext: true, disabled: true },
+  {
+    name: "SharedArrayBuffer",
+    insecureContext: true,
+    nightly: true,
+  },
   { name: "String", insecureContext: true },
   { name: "Symbol", insecureContext: true },
   { name: "SyntaxError", insecureContext: true },

modules/libpref/init/all.js

@@ -1162,7 +1162,11 @@ pref("javascript.options.mem.gc_max_empty_chunk_count", 30);
 
 pref("javascript.options.showInConsole", false);
 
+#if defined(NIGHTLY_BUILD)
+pref("javascript.options.shared_memory", true);
+#else
 pref("javascript.options.shared_memory", false);
+#endif
 
 pref("javascript.options.throw_on_debuggee_would_run", false);
 pref("javascript.options.dump_stack_on_debuggee_would_run", false);

testing/web-platform/meta/encoding/encodeInto.any.js.ini

@@ -1,18 +1,22 @@
 [encodeInto.any.html]
   [encodeInto() into SharedArrayBuffer with Hi and destination length 0, offset 4, filler 0]
-    expected: FAIL
+    expected:
+      if not nightly_build: FAIL
 
   [encodeInto() into SharedArrayBuffer with Hi and destination length 0, offset 0, filler 128]
-    expected: FAIL
+    expected:
+      if not nightly_build: FAIL
 
   [encodeInto() into SharedArrayBuffer with 𝌆A and destination length 3, offset 0, filler 128]
-    expected: FAIL
+    expected:
+      if not nightly_build: FAIL
 
   [encodeInto() into SharedArrayBuffer with ¥¥ and destination length 4, offset 4, filler 0]
     expected: FAIL
 
   [encodeInto() into SharedArrayBuffer with 𝌆A and destination length 3, offset 4, filler 0]
-    expected: FAIL
+    expected:
+      if not nightly_build: FAIL
 
   [encodeInto() into SharedArrayBuffer with 𝌆 and destination length 4, offset 0, filler random]
     expected: FAIL
@@ -42,16 +46,19 @@
     expected: FAIL
 
   [encodeInto() into SharedArrayBuffer with Hi and destination length 0, offset 4, filler random]
-    expected: FAIL
+    expected:
+      if not nightly_build: FAIL
 
   [encodeInto() into SharedArrayBuffer with 𝌆A and destination length 3, offset 0, filler random]
-    expected: FAIL
+    expected:
+      if not nightly_build: FAIL
 
   [encodeInto() into SharedArrayBuffer with AU+df06 and destination length 4, offset 4, filler 0]
     expected: FAIL
 
   [encodeInto() into SharedArrayBuffer with Hi and destination length 0, offset 4, filler 128]
-    expected: FAIL
+    expected:
+      if not nightly_build: FAIL
 
   [encodeInto() into SharedArrayBuffer with ¥¥ and destination length 4, offset 4, filler 128]
     expected: FAIL
@@ -72,13 +79,15 @@
     expected: FAIL
 
   [encodeInto() into SharedArrayBuffer with Hi and destination length 0, offset 0, filler random]
-    expected: FAIL
+    expected:
+      if not nightly_build: FAIL
 
   [encodeInto() into SharedArrayBuffer with A and destination length 10, offset 4, filler 0]
     expected: FAIL
 
   [encodeInto() into SharedArrayBuffer with 𝌆A and destination length 3, offset 0, filler 0]
-    expected: FAIL
+    expected:
+      if not nightly_build: FAIL
 
   [encodeInto() into SharedArrayBuffer with 𝌆 and destination length 4, offset 0, filler 128]
     expected: FAIL
@@ -90,10 +99,12 @@
     expected: FAIL
 
   [encodeInto() into SharedArrayBuffer with 𝌆A and destination length 3, offset 4, filler random]
-    expected: FAIL
+    expected:
+      if not nightly_build: FAIL
 
   [encodeInto() into SharedArrayBuffer with Hi and destination length 0, offset 0, filler 0]
-    expected: FAIL
+    expected:
+      if not nightly_build: FAIL
 
   [encodeInto() into SharedArrayBuffer with A and destination length 10, offset 0, filler 128]
     expected: FAIL
@@ -117,7 +128,8 @@
     expected: FAIL
 
   [encodeInto() into SharedArrayBuffer with 𝌆A and destination length 3, offset 4, filler 128]
-    expected: FAIL
+    expected:
+      if not nightly_build: FAIL
 
   [encodeInto() into SharedArrayBuffer with U+d834AU+df06A¥Hi and destination length 10, offset 4, filler 0]
     expected: FAIL
@@ -128,19 +140,23 @@
 
 [encodeInto.any.worker.html]
   [encodeInto() into SharedArrayBuffer with Hi and destination length 0, offset 4, filler 0]
-    expected: FAIL
+    expected:
+      if not nightly_build: FAIL
 
   [encodeInto() into SharedArrayBuffer with Hi and destination length 0, offset 0, filler 128]
-    expected: FAIL
+    expected:
+      if not nightly_build: FAIL
 
   [encodeInto() into SharedArrayBuffer with 𝌆A and destination length 3, offset 0, filler 128]
-    expected: FAIL
+    expected:
+      if not nightly_build: FAIL
 
   [encodeInto() into SharedArrayBuffer with ¥¥ and destination length 4, offset 4, filler 0]
     expected: FAIL
 
   [encodeInto() into SharedArrayBuffer with 𝌆A and destination length 3, offset 4, filler 0]
-    expected: FAIL
+    expected:
+      if not nightly_build: FAIL
 
   [encodeInto() into SharedArrayBuffer with 𝌆 and destination length 4, offset 0, filler random]
     expected: FAIL
@@ -170,16 +186,19 @@
     expected: FAIL
 
   [encodeInto() into SharedArrayBuffer with Hi and destination length 0, offset 4, filler random]
-    expected: FAIL
+    expected:
+      if not nightly_build: FAIL
 
   [encodeInto() into SharedArrayBuffer with 𝌆A and destination length 3, offset 0, filler random]
-    expected: FAIL
+    expected:
+      if not nightly_build: FAIL
 
   [encodeInto() into SharedArrayBuffer with AU+df06 and destination length 4, offset 4, filler 0]
     expected: FAIL
 
   [encodeInto() into SharedArrayBuffer with Hi and destination length 0, offset 4, filler 128]
-    expected: FAIL
+    expected:
+      if not nightly_build: FAIL
 
   [encodeInto() into SharedArrayBuffer with ¥¥ and destination length 4, offset 4, filler 128]
     expected: FAIL
@@ -200,13 +219,15 @@
     expected: FAIL
 
   [encodeInto() into SharedArrayBuffer with Hi and destination length 0, offset 0, filler random]
-    expected: FAIL
+    expected:
+      if not nightly_build: FAIL
 
   [encodeInto() into SharedArrayBuffer with A and destination length 10, offset 4, filler 0]
     expected: FAIL
 
   [encodeInto() into SharedArrayBuffer with 𝌆A and destination length 3, offset 0, filler 0]
-    expected: FAIL
+    expected:
+      if not nightly_build: FAIL
 
   [encodeInto() into SharedArrayBuffer with 𝌆 and destination length 4, offset 0, filler 128]
     expected: FAIL
@@ -218,10 +239,12 @@
     expected: FAIL
 
   [encodeInto() into SharedArrayBuffer with 𝌆A and destination length 3, offset 4, filler random]
-    expected: FAIL
+    expected:
+      if not nightly_build: FAIL
 
   [encodeInto() into SharedArrayBuffer with Hi and destination length 0, offset 0, filler 0]
-    expected: FAIL
+    expected:
+      if not nightly_build: FAIL
 
   [encodeInto() into SharedArrayBuffer with A and destination length 10, offset 0, filler 128]
     expected: FAIL
@@ -245,7 +268,8 @@
     expected: FAIL
 
   [encodeInto() into SharedArrayBuffer with 𝌆A and destination length 3, offset 4, filler 128]
-    expected: FAIL
+    expected:
+      if not nightly_build: FAIL
 
   [encodeInto() into SharedArrayBuffer with U+d834AU+df06A¥Hi and destination length 10, offset 4, filler 0]
     expected: FAIL

testing/web-platform/meta/encoding/streams/decode-utf8.any.js.ini

@@ -2,39 +2,200 @@
   expected: TIMEOUT
 
 [decode-utf8.any.sharedworker.html]
-  expected: TIMEOUT
-
-[decode-utf8.any.html]
-  expected: ERROR
-  [a trailing empty chunk should be ignored- ArrayBuffer]
-    expected: FAIL
-
+  expected:
+    if not nightly_build: TIMEOUT
   [decoding one UTF-8 chunk should give one output string - ArrayBuffer]
-    expected: FAIL
+    expected:
+      if nightly_build: FAIL
+    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1561594
 
   [decoding an empty chunk should give no output chunks - ArrayBuffer]
-    expected: FAIL
+    expected:
+      if nightly_build: FAIL
+    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1561594
 
   [an initial empty chunk should be ignored - ArrayBuffer]
-    expected: FAIL
+    expected:
+      if nightly_build: FAIL
+    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1561594
 
-
-[decode-utf8.any.worker.html]
-  expected: ERROR
   [a trailing empty chunk should be ignored- ArrayBuffer]
-    expected: FAIL
+    expected:
+      if nightly_build: FAIL
+    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1561594
 
-  [decoding one UTF-8 chunk should give one output string - ArrayBuffer]
-    expected: FAIL
+  [decoding one UTF-8 chunk should give one output string - SharedArrayBuffer]
+    expected:
+      if nightly_build: FAIL
+    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1561594
 
-  [decoding an empty chunk should give no output chunks - ArrayBuffer]
-    expected: FAIL
+  [decoding an empty chunk should give no output chunks - SharedArrayBuffer]
+    expected:
+      if nightly_build: FAIL
+    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1561594
 
-  [an initial empty chunk should be ignored - ArrayBuffer]
-    expected: FAIL
+  [an initial empty chunk should be ignored - SharedArrayBuffer]
+    expected:
+      if nightly_build: FAIL
+    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1561594
 
+  [a trailing empty chunk should be ignored- SharedArrayBuffer]
+    expected:
+      if nightly_build: FAIL
+    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1561594
+
+  [decoding a transferred Uint8Array chunk should give no output]
+    expected:
+      if nightly_build: FAIL
+    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1561594
+
+  [decoding a transferred ArrayBuffer chunk should give no output]
+    expected:
+      if nightly_build: FAIL
+    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1561594
 
 [decode-utf8.any.serviceworker.html]
   [decode-utf8]
+    expected:
+      if not nightly_build: FAIL
+
+  [decoding one UTF-8 chunk should give one output string - ArrayBuffer]
+    expected:
+      if nightly_build: FAIL
+    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1561594
+
+  [decoding an empty chunk should give no output chunks - ArrayBuffer]
+    expected:
+      if nightly_build: FAIL
+    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1561594
+
+  [an initial empty chunk should be ignored - ArrayBuffer]
+    expected:
+      if nightly_build: FAIL
+    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1561594
+
+  [a trailing empty chunk should be ignored- ArrayBuffer]
+    expected:
+      if nightly_build: FAIL
+    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1561594
+
+  [decoding one UTF-8 chunk should give one output string - SharedArrayBuffer]
+    expected:
+      if nightly_build: FAIL
+    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1561594
+
+  [decoding an empty chunk should give no output chunks - SharedArrayBuffer]
+    expected:
+      if nightly_build: FAIL
+    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1561594
+
+  [an initial empty chunk should be ignored - SharedArrayBuffer]
+    expected:
+      if nightly_build: FAIL
+    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1561594
+
+  [a trailing empty chunk should be ignored- SharedArrayBuffer]
+    expected:
+      if nightly_build: FAIL
+    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1561594
+
+  [decoding a transferred Uint8Array chunk should give no output]
+    expected:
+      if nightly_build: FAIL
+    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1561594
+
+  [decoding a transferred ArrayBuffer chunk should give no output]
+    expected:
+      if nightly_build: FAIL
+    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1561594
+
+[decode-utf8.any.html]
+  expected:
+    if not nightly_build: ERROR
+  [a trailing empty chunk should be ignored- ArrayBuffer]
     expected: FAIL
 
+  [decoding one UTF-8 chunk should give one output string - ArrayBuffer]
+    expected: FAIL
+
+  [decoding an empty chunk should give no output chunks - ArrayBuffer]
+    expected: FAIL
+
+  [an initial empty chunk should be ignored - ArrayBuffer]
+    expected: FAIL
+
+  [decoding one UTF-8 chunk should give one output string - SharedArrayBuffer]
+    expected:
+      if nightly_build: FAIL
+    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1561594
+
+  [decoding an empty chunk should give no output chunks - SharedArrayBuffer]
+    expected:
+      if nightly_build: FAIL
+    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1561594
+
+  [an initial empty chunk should be ignored - SharedArrayBuffer]
+    expected:
+      if nightly_build: FAIL
+    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1561594
+
+  [a trailing empty chunk should be ignored- SharedArrayBuffer]
+    expected:
+      if nightly_build: FAIL
+    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1561594
+
+  [decoding a transferred Uint8Array chunk should give no output]
+    expected:
+      if nightly_build: FAIL
+    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1561594
+
+  [decoding a transferred ArrayBuffer chunk should give no output]
+    expected:
+      if nightly_build: FAIL
+    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1561594
+
+[decode-utf8.any.worker.html]
+  expected:
+    if not nightly_build: ERROR
+  [a trailing empty chunk should be ignored- ArrayBuffer]
+    expected: FAIL
+
+  [decoding one UTF-8 chunk should give one output string - ArrayBuffer]
+    expected: FAIL
+
+  [decoding an empty chunk should give no output chunks - ArrayBuffer]
+    expected: FAIL
+
+  [an initial empty chunk should be ignored - ArrayBuffer]
+    expected: FAIL
+
+  [decoding one UTF-8 chunk should give one output string - SharedArrayBuffer]
+    expected:
+      if nightly_build: FAIL
+    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1561594
+
+  [decoding an empty chunk should give no output chunks - SharedArrayBuffer]
+    expected:
+      if nightly_build: FAIL
+    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1561594
+
+  [an initial empty chunk should be ignored - SharedArrayBuffer]
+    expected:
+      if nightly_build: FAIL
+    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1561594
+
+  [a trailing empty chunk should be ignored- SharedArrayBuffer]
+    expected:
+      if nightly_build: FAIL
+    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1561594
+
+  [decoding a transferred Uint8Array chunk should give no output]
+    expected:
+      if nightly_build: FAIL
+    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1561594
+
+  [decoding a transferred ArrayBuffer chunk should give no output]
+    expected:
+      if nightly_build: FAIL
+    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1561594
+

testing/web-platform/meta/html/webappapis/scripting/processing-model-2/integration-with-the-javascript-agent-formalism/requires-failure.https.any.js.ini

@@ -1,9 +1,10 @@
 [requires-failure.https.any.html]
   [[[CanBlock\]\] in a Window]
-    expected: FAIL
+    expected:
+      if not nightly_build: FAIL
 
 
 [requires-failure.https.any.serviceworker.html]
   [[[CanBlock\]\] in a ServiceWorkerGlobalScope]
-    expected: FAIL
-
+    expected:
+      if not nightly_build: FAIL

testing/web-platform/meta/html/webappapis/scripting/processing-model-2/integration-with-the-javascript-agent-formalism/requires-success.any.js.ini

@@ -1,7 +1,7 @@
 [requires-success.any.worker.html]
   [[[CanBlock\]\] in a DedicatedWorkerGlobalScope]
-    expected: FAIL
-
+    expected:
+      if not nightly_build: FAIL
 
 [requires-success.any.sharedworker.html]
   [[[CanBlock\]\] in a SharedWorkerGlobalScope]

testing/web-platform/meta/wasm/jsapi/memory/constructor.any.js.ini

@@ -1,6 +1,7 @@
 [constructor.any.worker.html]
   [Order of evaluation for descriptor (with shared)]
-    expected: FAIL
+    expected:
+      if not nightly_build: FAIL
 
   [Shared memory]
     expected: FAIL
@@ -8,7 +9,8 @@
 
 [constructor.any.html]
   [Order of evaluation for descriptor (with shared)]
-    expected: FAIL
+    expected:
+      if not nightly_build: FAIL
 
   [Shared memory]
     expected: FAIL

testing/web-platform/meta/wasm/jsapi/memory/grow.any.js.ini

@@ -1,9 +1,11 @@
 [grow.any.worker.html]
   [Growing shared memory does not detach old buffer]
-    expected: FAIL
+    expected:
+      if not nightly_build: FAIL
 
 
 [grow.any.html]
   [Growing shared memory does not detach old buffer]
-    expected: FAIL
+    expected:
+      if not nightly_build: FAIL
 

testing/web-platform/meta/webaudio/the-audio-api/the-audiobuffer-interface/audiobuffer-copy-channel.html.ini

@@ -8,14 +8,48 @@
   [X 5: buffer.copyFromChannel(x, 0, -1) incorrectly threw IndexSizeError: "Index or size is negative or greater than the allowed amount".]
     expected: FAIL
 
+  [X 8: buffer.copyFromChannel(SharedArrayBuffer view, 0) did not throw an exception.]
+    expected:
+      if nightly_build: FAIL
+    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1525330
+
+  [X 9: buffer.copyFromChannel(SharedArrayBuffer view, 0, 0) did not throw an exception.]
+    expected:
+      if nightly_build: FAIL
+    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1525330
+
+  [< [copyFrom-exceptions\] 3 out of 11 assertions were failed.]
+    expected:
+      if nightly_build: FAIL
+    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1525330
+
   [< [copyFrom-exceptions\] 1 out of 9 assertions were failed.]
-    expected: FAIL
+    expected:
+      if not nightly_build: FAIL
+
+  [< [copyTo-exceptions\] 3 out of 10 assertions were failed.]
+    expected:
+      if nightly_build: FAIL
+    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1525330
 
   [< [copyTo-exceptions\] 1 out of 8 assertions were failed.]
-    expected: FAIL
+    expected:
+      if not nightly_build: FAIL
+
+  [X 7: buffer.copyToChannel(SharedArrayBuffer view, 0) did not throw an exception.]
+    expected:
+      if nightly_build: FAIL
+    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1525330
+
+  [X 8: buffer.copyToChannel(SharedArrayBuffer view, 0, 0) did not throw an exception.]
+    expected:
+      if nightly_build: FAIL
+    bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1525330
 
   [Executing "copyFrom-exceptions"]
-    expected: FAIL
+    expected:
+      if not nightly_build: FAIL
 
   [Executing "copyTo-exceptions"]
-    expected: FAIL
+    expected:
+      if not nightly_build: FAIL