Do not call into JS from WasmDebugInfo::GetFunctionScript

src/wasm/wasm-debug.cc

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/wasm/wasm-debug.h"
 
 #include "src/assert-scope.h"
 #include "src/debug/debug.h"
 #include "src/factory.h"
 #include "src/isolate.h"
@@ skipping 144 matching lines @@
       isolate->factory()->NewStringFromAsciiChecked(buffer, TENURED);
   script->set_source_url(*source_url);
 
   int func_bytes_len =
       GetFunctionOffsetAndLength(debug_info, func_index).second;
   Handle<FixedArray> line_ends = isolate->factory()->NewFixedArray(1, TENURED);
   line_ends->set(0, Smi::FromInt(func_bytes_len));
   line_ends->set_map(isolate->heap()->fixed_cow_array_map());
   script->set_line_ends(*line_ends);
 
-  isolate->debug()->OnAfterCompile(script);
+  // TODO(clemensh): Register with the debugger. Note that we cannot call into
+  // JS at this point since this function is called from within stack trace
+  // collection (which means we cannot call Debug::OnAfterCompile in its
+  // current form). See crbug.com/641065.
+  if (false) isolate->debug()->OnAfterCompile(script);
 
   return *script;
 }
 
 Handle<String> WasmDebugInfo::DisassembleFunction(
     Handle<WasmDebugInfo> debug_info, int func_index) {
   std::ostringstream disassembly_os;
 
   {
     Vector<const uint8_t> bytes_vec = GetFunctionBytes(debug_info, func_index);
@@ skipping 45 matching lines @@
   int idx = 0;
   for (std::tuple<uint32_t, int, int> elem : offset_table_vec) {
     offset_table->set(idx++, Smi::FromInt(std::get<0>(elem)));
     offset_table->set(idx++, Smi::FromInt(std::get<1>(elem)));
     offset_table->set(idx++, Smi::FromInt(std::get<2>(elem)));
   }
   DCHECK_EQ(idx, offset_table->length());
 
   return offset_table;
 }