diff --git a/test/test_other.py b/test/test_other.py
index deed55ef59e96..be157c2587f1c 100644
--- a/test/test_other.py
+++ b/test/test_other.py
@@ -13406,8 +13406,9 @@ def test_wasm_worker_preprocessor_flags(self):
   @parameterized({
     # we will warn here since -O2 runs the optimizer and -g enables DWARF
     'O2_g': (True, ['-O2', '-g']),
-    # asyncify will force wasm-opt to run as well, so we warn here too
-    'asyncify_g': (True, ['-sASYNCIFY', '-g']),
+    # asyncify will force wasm-opt to run as well, but without optimizations, so
+    # we do not warn about the lack of optimization
+    'asyncify_g': (False, ['-sASYNCIFY', '-g']),
     # with --profiling-funcs however we do not use DWARF (we just emit the
     # names section) and will not warn.
     'O2_pfuncs': (False, ['-O2', '--profiling-funcs']),
diff --git a/test/third_party/posixtestsuite b/test/third_party/posixtestsuite
index 869e266b090a8..7ac21b152494f 160000
--- a/test/third_party/posixtestsuite
+++ b/test/third_party/posixtestsuite
@@ -1 +1 @@
-Subproject commit 869e266b090a8d44e51bb040904c942556b1e4ab
+Subproject commit 7ac21b152494f22d7778ac35ddf3c04083111a82
diff --git a/tools/link.py b/tools/link.py
index 18f7d7cad912e..9f332e6095026 100644
--- a/tools/link.py
+++ b/tools/link.py
@@ -2350,7 +2350,7 @@ def phase_binaryen(target, options, wasm_target):
       intermediate_debug_info -= 1
     # currently binaryen's DWARF support will limit some optimizations; warn on
     # that. see https://github.com/emscripten-core/emscripten/issues/15269
-    if settings.GENERATE_DWARF:
+    if settings.GENERATE_DWARF and should_run_binaryen_optimizer():
       diagnostics.warning('limited-postlink-optimizations', 'running limited binaryen optimizations because DWARF info requested (or indirectly required)')
     with ToolchainProfiler.profile_block('wasm_opt'):
       building.run_wasm_opt(wasm_target,