add c++ symbol map test

Author: LanderlYoung

test/test_other.py

@@ -11011,6 +11011,21 @@ def check_symbolmap_info(address, func):
     # The name section will not show bar, as it's inlined into main
     check_symbolmap_info(unreachable_addr, '__original_main')
 
+    # 3. Test symbol map on C++ name mangling
+    self.run_process([EMCC, test_file('test_symbolmap.cpp'),
+                      '-O1', '--emit-symbol-map', '-o', 'test_symbolmap.js'])
+    self.assertExists('test_symbolmap.js.symbols')
+
+    out_to_js_call_addr = self.get_instr_addr('call\t0', 'test_symbolmap.wasm')
+    unreachable_addr = self.get_instr_addr('unreachable', 'test_symbolmap.wasm')
+
+    def check_cpp_symbolmap_info(address, func):
+      out = self.run_process([emsymbolizer, '--source=symbolmap', '-f', 'test_symbolmap.js.symbols', 'test_symbolmap.wasm', address], stdout=PIPE).stdout
+      self.assertIn(func, out)
+
+    check_cpp_symbolmap_info(out_to_js_call_addr, 'Namespace::foo(Namespace::SomeClass)')
+    check_cpp_symbolmap_info(unreachable_addr, 'void Namespace::bar<Namespace::SomeClass>(Namespace::SomeClass)')
+
   def test_separate_dwarf(self):
     self.run_process([EMCC, test_file('hello_world.c'), '-g'])
     self.assertExists('a.out.wasm')

test/test_symbolmap.cpp

@@ -0,0 +1,24 @@
+#include <emscripten.h>
+
+namespace Namespace {
+
+EM_JS(int, out_to_js, (int x), {})
+
+class SomeClass{};
+
+void __attribute__((noinline)) foo(SomeClass v) {
+  out_to_js(0);
+}
+
+template <typename T>
+void __attribute__((noinline)) bar(T t) {
+  __builtin_trap();
+}
+
+}; // endof Namespace
+
+int main() {
+  Namespace::foo({});
+  Namespace::bar(Namespace::SomeClass{});
+  return 0;
+}