Add back in __gxx_personality_v0

src/library.js

@@ -405,6 +405,13 @@ mergeInto(LibraryManager.library, {
     abort('Assertion failed: ' + UTF8ToString(condition) + ', at: ' + [filename ? UTF8ToString(filename) : 'unknown filename', line, func ? UTF8ToString(func) : 'unknown function']);
   },
 
+  // TODO: Remove this when Rust doesn't need it anymore.
+  // https://github.com/rust-lang/rust/pull/97888
+  __gxx_personality_v0: function() {
+    console.warn("__gxx_personality_v0 called", arguments);
+    abort("__gxx_personality_v0 called");
+  },
+
   // ==========================================================================
   // time.h
   // ==========================================================================

tests/test_core.py

@@ -9401,6 +9401,34 @@ def test_js_library_i64_params(self):
     self.emcc_args += ['--js-library=' + test_file('core/js_library_i64_params.js')]
     self.do_core_test('js_library_i64_params.c')
 
+  def test_rust_gxx_personality_v0(self):
+    create_file('main.c', r'''
+      #include <stdio.h>
+      void __gxx_personality_v0();
+      void rust_eh_personality(){
+        __gxx_personality_v0();
+      }
+      int main(int argc, char** argv) {
+        printf("result: %d\n", argc);
+        if(argc == 2){
+          rust_eh_personality();
+        }
+        return 0;
+      }
+    ''')
+    self.emcc('main.c', ['-c'])
+
+    self.run_process([EMCC, '-o', 'main.js', 'main.o'] + self.get_emcc_args())
+
+    self.do_run('main.js', 'result: 1', no_build=True)
+    try:
+      self.do_run('main.js', 'result: 1', no_build=True, args=["1"])
+      raise RuntimeError('should not have passed')
+    except AssertionError as e:
+      err = e
+    assert "__gxx_personality_v0 called" in err.args[0]
+    del err
+
 
 # Generate tests for everything
 def make_run(name, emcc_args, settings=None, env=None, node_args=None, require_v8=False, v8_args=None):