Index: clang-tools-extra/clang-tidy/bugprone/BugproneTidyModule.cpp
===================================================================
--- clang-tools-extra/clang-tidy/bugprone/BugproneTidyModule.cpp
+++ clang-tools-extra/clang-tidy/bugprone/BugproneTidyModule.cpp
@@ -38,6 +38,7 @@
 #include "ParentVirtualCallCheck.h"
 #include "PosixReturnCheck.h"
 #include "ReservedIdentifierCheck.h"
+#include "SignalInMultithreadedProgramCheck.h"
 #include "SignedCharMisuseCheck.h"
 #include "SizeofContainerCheck.h"
 #include "SizeofExpressionCheck.h"
@@ -128,6 +129,8 @@
         "bugprone-posix-return");
     CheckFactories.registerCheck<ReservedIdentifierCheck>(
         "bugprone-reserved-identifier");
+    CheckFactories.registerCheck<SignalInMultithreadedProgramCheck>(
+        "bugprone-signal-in-multithreaded-program");
     CheckFactories.registerCheck<SignedCharMisuseCheck>(
         "bugprone-signed-char-misuse");
     CheckFactories.registerCheck<SizeofContainerCheck>(
Index: clang-tools-extra/clang-tidy/bugprone/CMakeLists.txt
===================================================================
--- clang-tools-extra/clang-tidy/bugprone/CMakeLists.txt
+++ clang-tools-extra/clang-tidy/bugprone/CMakeLists.txt
@@ -33,6 +33,7 @@
   ParentVirtualCallCheck.cpp
   PosixReturnCheck.cpp
   ReservedIdentifierCheck.cpp
+  SignalInMultithreadedProgramCheck.cpp
   SignedCharMisuseCheck.cpp
   SizeofContainerCheck.cpp
   SizeofExpressionCheck.cpp
Index: clang-tools-extra/clang-tidy/bugprone/SignalInMultithreadedProgramCheck.h
===================================================================
--- /dev/null
+++ clang-tools-extra/clang-tidy/bugprone/SignalInMultithreadedProgramCheck.h
@@ -0,0 +1,47 @@
+//===--- SignalInMultithreadedProgramCheck.h - clang-tidy -------*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_SIGNALINMULTITHREADEDPROGRAMCHECK_H
+#define LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_SIGNALINMULTITHREADEDPROGRAMCHECK_H
+
+#include "../ClangTidyCheck.h"
+#include "clang/AST/ASTContext.h"
+#include "clang/ASTMatchers/ASTMatchFinder.h"
+#include <string>
+#include <vector>
+
+namespace clang {
+namespace tidy {
+namespace bugprone {
+
+/// Finds ``signal`` function calls when the program is multithreaded. The
+/// check considers the analyzed program multithreaded if it finds at least
+/// one function call of the following: ``thrd_create``, ``std::thread``, 
+/// ``boost::thread``, ``pthread_t``.
+///
+/// For the user-facing documentation see:
+/// http://clang.llvm.org/extra/clang-tidy/checks/bugprone-signal-in-multithreaded-program.html
+class SignalInMultithreadedProgramCheck : public ClangTidyCheck {
+public:
+  SignalInMultithreadedProgramCheck(StringRef Name, ClangTidyContext *Context)
+      : ClangTidyCheck(Name, Context),
+        ThreadList(Options.get(
+            "ThreadList", "thrd_create;::thread;boost::thread;pthread_t")) {}
+  void storeOptions(ClangTidyOptions::OptionMap &Opts) override;
+  void registerMatchers(ast_matchers::MatchFinder *Finder) override;
+  void check(const ast_matchers::MatchFinder::MatchResult &Result) override;
+
+private:
+  const std::string ThreadList;
+};
+
+} // namespace bugprone
+} // namespace tidy
+} // namespace clang
+
+#endif // LLVM_CLANG_TOOLS_EXTRA_CLANG_TIDY_BUGPRONE_SIGNALINMULTITHREADEDPROGRAMCHECK_H
Index: clang-tools-extra/clang-tidy/bugprone/SignalInMultithreadedProgramCheck.cpp
===================================================================
--- /dev/null
+++ clang-tools-extra/clang-tidy/bugprone/SignalInMultithreadedProgramCheck.cpp
@@ -0,0 +1,59 @@
+//===--- SignalInMultithreadedProgramCheck.cpp - clang-tidy ---------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#include "SignalInMultithreadedProgramCheck.h"
+#include "../utils/Matchers.h"
+#include "../utils/OptionsUtils.h"
+#include "clang/AST/ASTContext.h"
+#include "clang/ASTMatchers/ASTMatchFinder.h"
+
+using namespace clang::ast_matchers;
+using namespace clang::ast_matchers::internal;
+
+namespace clang {
+namespace tidy {
+namespace bugprone {
+
+Matcher<FunctionDecl> hasAnyListedName(const std::string &FunctionNames) {
+  const std::vector<std::string> NameList =
+      utils::options::parseStringList(FunctionNames);
+  return hasAnyName(std::vector<StringRef>(NameList.begin(), NameList.end()));
+}
+
+void SignalInMultithreadedProgramCheck::storeOptions(
+    ClangTidyOptions::OptionMap &Opts) {
+  Options.store(Opts, "ThreadList", ThreadList);
+}
+
+void SignalInMultithreadedProgramCheck::registerMatchers(MatchFinder *Finder) {
+  auto threadCall =
+      anyOf(hasDescendant(callExpr(ignoringImpCasts(hasDescendant(declRefExpr(
+                hasDeclaration(functionDecl(hasAnyListedName(ThreadList)))))))),
+            hasDescendant(varDecl(hasType(recordDecl(hasName("std::thread")))))
+
+      );
+  Finder->addMatcher(
+      callExpr(
+          ignoringImpCasts(hasDescendant(declRefExpr(hasDeclaration(
+              functionDecl(allOf(hasName("signal"), parameterCountIs(2),
+                                 hasParameter(0, hasType(isInteger())))))))),
+          hasAncestor(compoundStmt(threadCall)))
+          .bind("signal"),
+      this);
+}
+
+void SignalInMultithreadedProgramCheck::check(
+    const MatchFinder::MatchResult &Result) {
+  const auto *MatchedSignal = Result.Nodes.getNodeAs<CallExpr>("signal");
+  diag(MatchedSignal->getExprLoc(),
+       "signal function should not be called in a multithreaded program");
+}
+
+} // namespace bugprone
+} // namespace tidy
+} // namespace clang
Index: clang-tools-extra/clang-tidy/cert/CERTTidyModule.cpp
===================================================================
--- clang-tools-extra/clang-tidy/cert/CERTTidyModule.cpp
+++ clang-tools-extra/clang-tidy/cert/CERTTidyModule.cpp
@@ -11,6 +11,7 @@
 #include "../ClangTidyModuleRegistry.h"
 #include "../bugprone/BadSignalToKillThreadCheck.h"
 #include "../bugprone/ReservedIdentifierCheck.h"
+#include "../bugprone/SignalInMultithreadedProgramCheck.h"
 #include "../bugprone/SignedCharMisuseCheck.h"
 #include "../bugprone/SpuriouslyWakeUpFunctionsCheck.h"
 #include "../bugprone/UnhandledSelfAssignmentCheck.h"
@@ -86,6 +87,8 @@
 
     // C checkers
     // CON
+    CheckFactories.registerCheck<bugprone::SignalInMultithreadedProgramCheck>(
+        "cert-con37-c");
     CheckFactories.registerCheck<bugprone::SpuriouslyWakeUpFunctionsCheck>(
         "cert-con36-c");
     // DCL
Index: clang-tools-extra/docs/ReleaseNotes.rst
===================================================================
--- clang-tools-extra/docs/ReleaseNotes.rst
+++ clang-tools-extra/docs/ReleaseNotes.rst
@@ -107,6 +107,14 @@
 
   Checks for usages of identifiers reserved for use by the implementation.
 
+- New :doc:`bugprone-signal-in-multithreaded-program
+  <clang-tidy/checks/bugprone-signal-in-multithreaded-program>` check.
+
+  Finds ``signal`` function calls when the program is multithreaded. The
+  check considers the analyzed program multithreaded if it finds at least
+  one function call of the following: ``thrd_create``, ``std::thread``, 
+  ``boost::thread``, ``pthread_t``.
+
 - New :doc:`bugprone-suspicious-include
   <clang-tidy/checks/bugprone-suspicious-include>` check.
 
@@ -172,6 +180,11 @@
   :doc:`bugprone-spuriously-wake-up-functions
   <clang-tidy/checks/bugprone-spuriously-wake-up-functions>` was added.
 
+- New alias :doc:`cert-con37-c
+  <clang-tidy/checks/cert-con37-c>` to
+  :doc:`bugprone-signal-in-multithreaded-program
+  <clang-tidy/checks/bugprone-signal-in-multithreaded-program>` was added.
+
 - New alias :doc:`cert-con54-cpp
   <clang-tidy/checks/cert-con54-cpp>` to
   :doc:`bugprone-spuriously-wake-up-functions
Index: clang-tools-extra/docs/clang-tidy/checks/bugprone-signal-in-multithreaded-program.rst
===================================================================
--- /dev/null
+++ clang-tools-extra/docs/clang-tidy/checks/bugprone-signal-in-multithreaded-program.rst
@@ -0,0 +1,26 @@
+.. title:: clang-tidy - bugprone-signal-in-multithreaded-program
+
+bugprone-signal-in-multithreaded-program
+========================================
+
+Finds ``signal`` function calls when the program is multithreaded. The
+check considers the analyzed program multithreaded if it finds at least
+one function call of the following: ``thrd_create``, ``std::thread``, 
+``boost::thread``, ``pthread_t``.
+
+.. code-block:: c
+
+    signal(SIGUSR1, handler);
+    thrd_t tid;
+
+This check corresponds to the CERT C++ Coding Standard rule
+`CON37-C. Do not call signal() in a multithreaded program
+<https://wiki.sei.cmu.edu/confluence/display/c/CON37-C.+Do+not+call+signal%28%29+in+a+multithreaded+program>`_.
+
+Options
+-------
+
+.. option:: ThreadList
+
+   Semicolon-separated list of fully qualified names of thread call functions.
+   Defaults to ``thrd_create;::thread;boost::thread;pthread_t``.
Index: clang-tools-extra/docs/clang-tidy/checks/cert-con37-c.rst
===================================================================
--- /dev/null
+++ clang-tools-extra/docs/clang-tidy/checks/cert-con37-c.rst
@@ -0,0 +1,10 @@
+.. title:: clang-tidy - cert-con37-c
+.. meta::
+   :http-equiv=refresh: 5;URL=bugprone-signal-in-multithreaded-program.html
+
+cert-con37-c
+============
+
+The cert-con37-c check is an alias, please see
+`bugprone-signal-in-multithreaded-program <bugprone-signal-in-multithreaded-program.html>`_ 
+for more information.
Index: clang-tools-extra/docs/clang-tidy/checks/list.rst
===================================================================
--- clang-tools-extra/docs/clang-tidy/checks/list.rst
+++ clang-tools-extra/docs/clang-tidy/checks/list.rst
@@ -74,6 +74,7 @@
    `bugprone-parent-virtual-call <bugprone-parent-virtual-call.html>`_, "Yes"
    `bugprone-posix-return <bugprone-posix-return.html>`_, "Yes"
    `bugprone-reserved-identifier <bugprone-reserved-identifier.html>`_, "Yes"
+   `bugprone-signal-in-multithreaded-program <bugprone-signal-in-multithreaded-program.html>`_,
    `bugprone-signed-char-misuse <bugprone-signed-char-misuse.html>`_,
    `bugprone-sizeof-container <bugprone-sizeof-container.html>`_,
    `bugprone-sizeof-expression <bugprone-sizeof-expression.html>`_,
@@ -98,6 +99,7 @@
    `bugprone-unused-return-value <bugprone-unused-return-value.html>`_,
    `bugprone-use-after-move <bugprone-use-after-move.html>`_,
    `bugprone-virtual-near-miss <bugprone-virtual-near-miss.html>`_, "Yes"
+   `cert-con37-c <cert-con37-c.html>`_,
    `cert-dcl21-cpp <cert-dcl21-cpp.html>`_,
    `cert-dcl50-cpp <cert-dcl50-cpp.html>`_,
    `cert-dcl58-cpp <cert-dcl58-cpp.html>`_,
Index: clang-tools-extra/test/clang-tidy/checkers/bugprone-signal-in-multithreaded-program-config-std::thread.cpp
===================================================================
--- /dev/null
+++ clang-tools-extra/test/clang-tidy/checkers/bugprone-signal-in-multithreaded-program-config-std::thread.cpp
@@ -0,0 +1,39 @@
+// RUN: %check_clang_tidy %s bugprone-signal-in-multithreaded-program %t \
+// RUN: -config='{CheckOptions: \
+// RUN:  [{key: bugprone-signal-in-multithreaded-program.ThreadList, value: "::thread"}]}'
+
+typedef unsigned long int thrd_t;
+typedef int (*thrd_start_t)(void *);
+typedef int sig_atomic_t;
+#define SIGUSR1 30
+#define NULL 0
+
+void (*signal(int sig, void (*handler)(int)))(int);
+
+volatile sig_atomic_t flag = 0;
+
+void handler(int signum) {
+  flag = 1;
+}
+
+void threadFunction() {}
+
+namespace std {
+class thread {
+public:
+  thread() noexcept;
+  template <class Function, class... Args>
+  explicit thread(Function &&f, Args &&... args);
+  thread(const thread &) = delete;
+  thread(thread &&) noexcept;
+};
+} // namespace std
+
+int main(void) {
+  signal(SIGUSR1, handler);
+  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: signal function should not be called in a multithreaded program [bugprone-signal-in-multithreaded-program]
+
+  std::thread threadObj(threadFunction);
+
+  return 0;
+}
Index: clang-tools-extra/test/clang-tidy/checkers/bugprone-signal-in-multithreaded-program-config-thrd_create.cpp
===================================================================
--- /dev/null
+++ clang-tools-extra/test/clang-tidy/checkers/bugprone-signal-in-multithreaded-program-config-thrd_create.cpp
@@ -0,0 +1,38 @@
+// RUN: %check_clang_tidy %s bugprone-signal-in-multithreaded-program %t \
+// RUN: -config='{CheckOptions: \
+// RUN:  [{key: bugprone-signal-in-multithreaded-program.ThreadList, value: "thrd_create"}]}'
+
+typedef unsigned long int thrd_t;
+typedef int (*thrd_start_t)(void *);
+typedef int sig_atomic_t;
+#define SIGUSR1 30
+#define NULL 0
+
+void (*signal(int sig, void (*handler)(int)))(int);
+
+int thrd_create(thrd_t *thr, thrd_start_t func, void *arg) { return 0; };
+enum {
+  thrd_success = 0,
+};
+
+volatile sig_atomic_t flag = 0;
+
+void handler(int signum) {
+  flag = 1;
+}
+
+int func(void *data) {
+  while (!flag) {
+  }
+  return 0;
+}
+
+int main(void) {
+  signal(SIGUSR1, handler);
+  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: signal function should not be called in a multithreaded program [bugprone-signal-in-multithreaded-program]
+  thrd_t tid;
+
+  if (thrd_success != thrd_create(&tid, func, NULL)) {
+  }
+  return 0;
+}
Index: clang-tools-extra/test/clang-tidy/checkers/bugprone-signal-in-multithreaded-program-noconfig-std::thread.cpp
===================================================================
--- /dev/null
+++ clang-tools-extra/test/clang-tidy/checkers/bugprone-signal-in-multithreaded-program-noconfig-std::thread.cpp
@@ -0,0 +1,37 @@
+// RUN: %check_clang_tidy %s bugprone-signal-in-multithreaded-program %t
+
+typedef unsigned long int thrd_t;
+typedef int (*thrd_start_t)(void *);
+typedef int sig_atomic_t;
+#define SIGUSR1 30
+#define NULL 0
+
+void (*signal(int sig, void (*handler)(int)))(int);
+
+volatile sig_atomic_t flag = 0;
+
+void handler(int signum) {
+  flag = 1;
+}
+
+void threadFunction() {}
+
+namespace std {
+class thread {
+public:
+  thread() noexcept;
+  template <class Function, class... Args>
+  explicit thread(Function &&f, Args &&... args);
+  thread(const thread &) = delete;
+  thread(thread &&) noexcept;
+};
+} // namespace std
+
+int main(void) {
+  signal(SIGUSR1, handler);
+  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: signal function should not be called in a multithreaded program [bugprone-signal-in-multithreaded-program]
+
+  std::thread threadObj(threadFunction);
+
+  return 0;
+}
Index: clang-tools-extra/test/clang-tidy/checkers/bugprone-signal-in-multithreaded-program-noconfig-thrd_create.cpp
===================================================================
--- /dev/null
+++ clang-tools-extra/test/clang-tidy/checkers/bugprone-signal-in-multithreaded-program-noconfig-thrd_create.cpp
@@ -0,0 +1,36 @@
+// RUN: %check_clang_tidy %s bugprone-signal-in-multithreaded-program %t
+
+typedef unsigned long int thrd_t;
+typedef int (*thrd_start_t)(void *);
+typedef int sig_atomic_t;
+#define SIGUSR1 30
+#define NULL 0
+
+void (*signal(int sig, void (*handler)(int)))(int);
+
+int thrd_create(thrd_t *thr, thrd_start_t func, void *arg) { return 0; };
+enum {
+  thrd_success = 0,
+};
+
+volatile sig_atomic_t flag = 0;
+
+void handler(int signum) {
+  flag = 1;
+}
+
+int func(void *data) {
+  while (!flag) {
+  }
+  return 0;
+}
+
+int main(void) {
+  signal(SIGUSR1, handler);
+  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: signal function should not be called in a multithreaded program [bugprone-signal-in-multithreaded-program]
+  thrd_t tid;
+
+  if (thrd_success != thrd_create(&tid, func, NULL)) {
+  }
+  return 0;
+}