Fix use of source maps with sync compilation (#16632)

Fixes: #15036

Author: sbc100

src/preamble.js

@@ -906,6 +906,13 @@ var splitModuleProxyHandler = {
 };
 #endif
 
+#if LOAD_SOURCE_MAP
+function receiveSourceMapJSON(sourceMap) {
+  wasmSourceMap = new WasmSourceMap(sourceMap);
+  {{{ runOnMainThread("removeRunDependency('source-map');") }}}
+}
+#endif
+
 #if SPLIT_MODULE || !WASM_ASYNC_COMPILATION
 function instantiateSync(file, info) {
   var instance;
@@ -1116,11 +1123,6 @@ function createWasm() {
 
 #if LOAD_SOURCE_MAP
   {{{ runOnMainThread("addRunDependency('source-map');") }}}
-
-  function receiveSourceMapJSON(sourceMap) {
-    wasmSourceMap = new WasmSourceMap(sourceMap);
-    {{{ runOnMainThread("removeRunDependency('source-map');") }}}
-  }
 #endif
 
   // Prefer streaming instantiation if available.

tests/test_other.py

@@ -9617,6 +9617,14 @@ def test_asan_null_deref(self):
       'AddressSanitizer: null-pointer-dereference on address',
     ])
 
+  def test_asan_sync_compilation(self):
+    self.set_setting('WASM_ASYNC_COMPILATION', 0)
+    self.do_runf(test_file('other/test_asan_null_deref.c'),
+                 emcc_args=['-fsanitize=address', '-gsource-map'],
+                 assert_returncode=NON_ZERO, expected_output=[
+      'AddressSanitizer: null-pointer-dereference on address',
+    ])
+
   def test_asan_memory_growth(self):
     self.do_runf(test_file('other/test_asan_null_deref.c'),
                  emcc_args=['-fsanitize=address', '-sALLOW_MEMORY_GROWTH'],