[clang-tidy][NFC] Split bugprone-exception-escape tests

Split tests files into noexcept and throw().
This is preparation for a C++20 support in this check.

Reviewed By: carlosgalvezp

Differential Revision: https://reviews.llvm.org/D148458

Author: PiotrZSL

clang-tools-extra/test/clang-tidy/checkers/bugprone/exception-escape-throw.cpp

@@ -0,0 +1,31 @@
+// RUN: %check_clang_tidy -std=c++11,c++14 %s bugprone-exception-escape %t -- -- -fexceptions
+
+void throwing_throw_nothing() throw() {
+// CHECK-MESSAGES: :[[@LINE-1]]:6: warning: an exception may be thrown in function 'throwing_throw_nothing' which should not throw exceptions
+  throw 1;
+}
+
+void explicit_int_thrower() throw(int);
+
+void implicit_int_thrower() {
+  throw 5;
+}
+
+void indirect_implicit() throw() {
+// CHECK-MESSAGES: :[[@LINE-1]]:6: warning: an exception may be thrown in function 'indirect_implicit' which should not throw exceptions
+  implicit_int_thrower();
+}
+
+void indirect_explicit() throw() {
+// CHECK-MESSAGES: :[[@LINE-1]]:6: warning: an exception may be thrown in function 'indirect_explicit' which should not throw exceptions
+  explicit_int_thrower();
+}
+
+struct super_throws {
+  super_throws() throw(int) { throw 42; }
+};
+
+struct sub_throws : super_throws {
+  sub_throws() throw() : super_throws() {}
+  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: an exception may be thrown in function 'sub_throws' which should not throw exceptions
+};

clang-tools-extra/test/clang-tidy/checkers/bugprone/exception-escape.cpp

@@ -32,11 +32,6 @@ void throwing_noexcept() noexcept {
   throw 1;
 }
 
-void throwing_throw_nothing() throw() {
-    // CHECK-MESSAGES: :[[@LINE-1]]:6: warning: an exception may be thrown in function 'throwing_throw_nothing' which should not throw exceptions
-  throw 1;
-}
-
 void throw_and_catch() noexcept {
   // CHECK-MESSAGES-NOT: :[[@LINE-1]]:6: warning: an exception may be thrown in function 'throw_and_catch' which should not throw exceptions
   try {
@@ -557,7 +552,9 @@ void implicit_int_thrower() {
   throw 1;
 }
 
-void explicit_int_thrower() throw(int);
+void explicit_int_thrower() noexcept(false) {
+  throw 1;
+}
 
 void indirect_implicit() noexcept {
   // CHECK-MESSAGES: :[[@LINE-1]]:6: warning: an exception may be thrown in function 'indirect_implicit' which should not throw exceptions
@@ -676,15 +673,6 @@ struct sub_throws : super_throws {
   // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: an exception may be thrown in function 'sub_throws' which should not throw exceptions
 };
 
-struct super_throws_again {
-  super_throws_again() throw(int);
-};
-
-struct sub_throws_again : super_throws_again {
-  sub_throws_again() noexcept : super_throws_again() {}
-  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: an exception may be thrown in function 'sub_throws_again' which should not throw exceptions
-};
-
 struct init_member_throws {
   super_throws s;