set WASM_BIGINT setting, fix tests

Author: dschuff

src/settings.js

@@ -1498,7 +1498,7 @@ var DYNCALLS = false;
 // i64 is used. If WASM_BIGINT is present, the default minimum supported browser
 // versions will be increased to the min version that supports BigInt.
 // [link]
-var WASM_BIGINT = false;
+var WASM_BIGINT = true;
 
 // WebAssembly defines a "producers section" which compilers and tools can
 // annotate themselves in, and LLVM emits this by default.

test/test_browser.py

@@ -4204,7 +4204,7 @@ def test_small_js_flags(self):
     print('size:', size)
     # Note that this size includes test harness additions (for reporting the result, etc.).
     if not self.is_wasm64() and not self.is_2gb():
-      self.assertLess(abs(size - 4592), 100)
+      self.assertLess(abs(size - 4486), 100)
 
   # Tests that it is possible to initialize and render WebGL content in a
   # pthread by using OffscreenCanvas.

test/test_core.py

@@ -7005,6 +7005,7 @@ def test_EXPORTED_RUNTIME_METHODS(self):
     '': [],
     'minimal_runtime': ['-sMINIMAL_RUNTIME=1']
   })
+  @no_wasm2js('wasm2js incompatible with Bigint')
   def test_dyncall_specific(self, *args):
     if self.get_setting('MEMORY64'):
       self.skipTest('not compatible with MEMORY64')
@@ -8428,6 +8429,7 @@ def test_wasm2js(self):
     if self.is_wasm2js():
       self.skipTest('redundant to test wasm2js in wasm2js* mode')
     self.set_setting('WASM', 0)
+    self.set_setting('WASM_BIGINT', 0)
     self.do_core_test('test_hello_world.c')
     self.assertNotExists('test_hello_world.js.mem')
 

test/test_other.py

@@ -12902,7 +12902,7 @@ def test_wasm2js_no_dylink(self):
       self.assertContained('WASM2JS is not compatible with relocatable output', err)
 
   def test_wasm2js_standalone(self):
-    self.do_run_in_out_file_test('hello_world.c', emcc_args=['-sSTANDALONE_WASM', '-sWASM=0'])
+    self.do_run_in_out_file_test('hello_world.c', emcc_args=['-sSTANDALONE_WASM', '-sWASM=0', '-sWASM_BIGINT=0'])
 
   def test_oformat(self):
     self.run_process([EMCC, test_file('hello_world.c'), '--oformat=wasm', '-o', 'out.foo'])

tools/link.py

@@ -797,11 +797,13 @@ def phase_linker_setup(options, state, newargs):  # noqa: C901, PLR0912, PLR0915
     settings.WASM2JS = 1
     # Wasm bigint doesn't make sense with wasm2js, since it controls how the
     # wasm and JS interact.
-    if settings.WASM_BIGINT:
-      exit_with_error('WASM_BIGINT is not compatible with WASM=0')
+    settings.WASM_BIGINT = 0
+    feature_matrix.disable_feature(feature_matrix.Feature.JS_BIGINT_INTEGRATION)
   if settings.WASM == 2:
     # Requesting both Wasm and Wasm2JS support
     settings.WASM2JS = 1
+    settings.WASM_BIGINT = 0
+    feature_matrix.disable_feature(feature_matrix.Feature.JS_BIGINT_INTEGRATION)
 
   if options.oformat == OFormat.WASM and not settings.SIDE_MODULE:
     # if the output is just a wasm file, it will normally be a standalone one,
@@ -1764,7 +1766,7 @@ def get_full_import_name(name):
       exit_with_error('wasm2js does not support source maps yet (debug in wasm for now)')
     if settings.MEMORY64:
       exit_with_error('wasm2js does not support MEMORY64')
-    if settings.WASM_BIGINT and 'WASM_BIGINT' in user_settings:
+    if settings.WASM_BIGINT:
       exit_with_error('wasm2js does not support WASM_BIGINT')
     if settings.CAN_ADDRESS_2GB:
       exit_with_error('wasm2js does not support >2gb address space')