report: handle on-fatalerror better

--report-on-fatalerror was not honored properly, as there was no way to check the value which was stored in the Environment pointer which can be inaccessible under certain fatal error situations. Move the flag out of Environment pointer so that this is doable. Co-authored-by: Shobhit Chittora schittora@paypal.com Fixes: #31576 Refs: #29881
nodejs · HarshithaKP · Mar 16, 2020 · Mar 16, 2020 · Mar 16, 2020 · Mar 16, 2020
commit 175c2e7a3f40c0e97edd46f9322878aaaa43710d
diff --git a/src/node_errors.cc b/src/node_errors.cc
@@ -406,7 +406,7 @@ void OnFatalError(const char* location, const char* message) {
 
   Isolate* isolate = Isolate::GetCurrent();
   Environment* env = Environment::GetCurrent(isolate);
-  if (env == nullptr || env->isolate_data()->options()->report_on_fatalerror) {
+  if (per_process::cli_options->report_on_fatalerror) {
     report::TriggerNodeReport(
         isolate, env, message, "FatalError", "", Local<String>());
   }

diff --git a/src/node_options.cc b/src/node_options.cc
@@ -590,10 +590,6 @@ PerIsolateOptionsParser::PerIsolateOptionsParser(
             "generate diagnostic report upon receiving signals",
             &PerIsolateOptions::report_on_signal,
             kAllowedInEnvironment);
-  AddOption("--report-on-fatalerror",
-            "generate diagnostic report on fatal (internal) errors",
-            &PerIsolateOptions::report_on_fatalerror,
-            kAllowedInEnvironment);
   AddOption("--report-signal",
             "causes diagnostic report to be produced on provided signal,"
             " unsupported in Windows. (default: SIGUSR2)",
@@ -667,6 +663,10 @@ PerProcessOptionsParser::PerProcessOptionsParser(
   AddOption("--v8-options",
             "print V8 command line options",
             &PerProcessOptions::print_v8_help);
+  AddOption("--report-on-fatalerror",
+              "generate diagnostic report on fatal (internal) errors",
+              &PerProcessOptions::report_on_fatalerror,
+              kAllowedInEnvironment);
 
 #ifdef NODE_HAVE_I18N_SUPPORT
   AddOption("--icu-data-dir",

diff --git a/src/node_options.h b/src/node_options.h
@@ -186,7 +186,6 @@ class PerIsolateOptions : public Options {
   bool no_node_snapshot = false;
   bool report_uncaught_exception = false;
   bool report_on_signal = false;
-  bool report_on_fatalerror = false;
   bool report_compact = false;
   std::string report_signal = "SIGUSR2";
   std::string report_filename;
@@ -236,6 +235,7 @@ class PerProcessOptions : public Options {
   std::string use_largepages = "off";
   bool trace_sigint = false;
   std::vector<std::string> cmdline;
+  bool report_on_fatalerror = false;
 
   inline PerIsolateOptions* get_per_isolate_options();
   void CheckOptions(std::vector<std::string>* errors) override;

diff --git a/src/node_report_module.cc b/src/node_report_module.cc
@@ -131,13 +131,13 @@ static void SetSignal(const FunctionCallbackInfo<Value>& info) {
 static void ShouldReportOnFatalError(const FunctionCallbackInfo<Value>& info) {
   Environment* env = Environment::GetCurrent(info);
   info.GetReturnValue().Set(
-      env->isolate_data()->options()->report_on_fatalerror);
+      node::per_process::cli_options->report_on_fatalerror);
 }
 
 static void SetReportOnFatalError(const FunctionCallbackInfo<Value>& info) {
   Environment* env = Environment::GetCurrent(info);
   CHECK(info[0]->IsBoolean());
-  env->isolate_data()->options()->report_on_fatalerror = info[0]->IsTrue();
+  node::per_process::cli_options->report_on_fatalerror = info[0]->IsTrue();
 }
 
 static void ShouldReportOnSignal(const FunctionCallbackInfo<Value>& info) {

diff --git a/test/report/test-report-fatal-error.js b/test/report/test-report-fatal-error.js
@@ -20,17 +20,26 @@ if (process.argv[2] === 'child') {
   const helper = require('../common/report.js');
   const tmpdir = require('../common/tmpdir');
   tmpdir.refresh();
-  const spawn = require('child_process').spawn;
-  const args = ['--report-on-fatalerror',
-                '--max-old-space-size=20',
-                __filename,
-                'child'];
-  const child = spawn(process.execPath, args, { cwd: tmpdir.path });
-  child.on('exit', common.mustCall((code) => {
-    assert.notStrictEqual(code, 0, 'Process exited unexpectedly');
-    const reports = helper.findReports(child.pid, tmpdir.path);
-    assert.strictEqual(reports.length, 1);
-    const report = reports[0];
-    helper.validate(report);
-  }));
+  const spawnSync = require('child_process').spawnSync;
+  let args = ['--report-on-fatalerror',
+              '--max-old-space-size=20',
+              __filename,
+              'child'];
+
+  let child = spawnSync(process.execPath, args, { cwd: tmpdir.path });
+
+  assert.notStrictEqual(child.status, 0, 'Process exited unexpectedly');
+  let reports = helper.findReports(child.pid, tmpdir.path);
+  assert.strictEqual(reports.length, 1);
+  const report = reports[0];
+  helper.validate(report);
+
+  args = ['--max-old-space-size=20',
+          __filename,
+          'child'];
+
+  child = spawnSync(process.execPath, args, { cwd: tmpdir.path });
+  assert.notStrictEqual(child.status, 0, 'Process exited unexpectedly');
+  reports = helper.findReports(child.pid, tmpdir.path);
+  assert.strictEqual(reports.length, 0);
 }