Index: clang/docs/LibASTMatchersReference.html
===================================================================
--- clang/docs/LibASTMatchersReference.html
+++ clang/docs/LibASTMatchersReference.html
@@ -7298,6 +7298,16 @@
 </pre></td></tr>
 
 
+<tr><td>Matcher&lt;<a href="https://clang.llvm.org/doxygen/classclang_1_1CaseStmt.html">CaseStmt</a>&gt;</td><td class="name" onclick="toggle('hasSubstatement0')"><a name="hasSubstatement0Anchor">hasSubstatement</a></td><td>Matcher&lt;<a href="https://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>&gt; InnerMatcher</td></tr>
+<tr><td colspan="4" class="doc" id="hasSubstatement0"><pre>Matches the substatement associated with a case statement.
+
+Given
+  switch (1) { case 1: break; case 2: return; break; default: return; break; }
+caseStmt(hasSubstatement(returnStmt()))
+  matches "case 2: return;"
+</pre></td></tr>
+
+
 <tr><td>Matcher&lt;<a href="https://clang.llvm.org/doxygen/classclang_1_1CastExpr.html">CastExpr</a>&gt;</td><td class="name" onclick="toggle('hasSourceExpression0')"><a name="hasSourceExpression0Anchor">hasSourceExpression</a></td><td>Matcher&lt;<a href="https://clang.llvm.org/doxygen/classclang_1_1Expr.html">Expr</a>&gt; InnerMatcher</td></tr>
 <tr><td colspan="4" class="doc" id="hasSourceExpression0"><pre>Matches if the cast's source expression
 or opaque value's source expression matches the given matcher.
@@ -7653,6 +7663,16 @@
 </pre></td></tr>
 
 
+<tr><td>Matcher&lt;<a href="https://clang.llvm.org/doxygen/classclang_1_1DefaultStmt.html">DefaultStmt</a>&gt;</td><td class="name" onclick="toggle('hasSubstatement1')"><a name="hasSubstatement1Anchor">hasSubstatement</a></td><td>Matcher&lt;<a href="https://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>&gt; InnerMatcher</td></tr>
+<tr><td colspan="4" class="doc" id="hasSubstatement1"><pre>Matches the substatement associated with a default statement.
+
+Given
+  switch (1) { case 1: break; case 2: return; break; default: return; break; }
+defaultStmt(hasSubstatement(returnStmt()))
+  matches "default: return;"
+</pre></td></tr>
+
+
 <tr><td>Matcher&lt;<a href="https://clang.llvm.org/doxygen/classclang_1_1DoStmt.html">DoStmt</a>&gt;</td><td class="name" onclick="toggle('hasBody0')"><a name="hasBody0Anchor">hasBody</a></td><td>Matcher&lt;<a href="https://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>&gt; InnerMatcher</td></tr>
 <tr><td colspan="4" class="doc" id="hasBody0"><pre></pre></td></tr>
 
@@ -8359,6 +8379,17 @@
 </pre></td></tr>
 
 
+<tr><td>Matcher&lt;<a href="https://clang.llvm.org/doxygen/classclang_1_1LabelStmt.html">LabelStmt</a>&gt;</td><td class="name" onclick="toggle('hasSubstatement2')"><a name="hasSubstatement2Anchor">hasSubstatement</a></td><td>Matcher&lt;<a href="https://clang.llvm.org/doxygen/classclang_1_1Stmt.html">Stmt</a>&gt; InnerMatcher</td></tr>
+<tr><td colspan="4" class="doc" id="hasSubstatement2"><pre>Matches the substatement associated with a label statement.
+
+Given
+  foo: return;
+  bar: break;
+labelStmt(hasSubstatement(breakStmt()))
+  matches "bar: break;"
+</pre></td></tr>
+
+
 <tr><td>Matcher&lt;<a href="https://clang.llvm.org/doxygen/classclang_1_1LambdaCapture.html">LambdaCapture</a>&gt;</td><td class="name" onclick="toggle('capturesVar0')"><a name="capturesVar0Anchor">capturesVar</a></td><td>Matcher&lt;<a href="https://clang.llvm.org/doxygen/classclang_1_1VarDecl.html">VarDecl</a>&gt; InnerMatcher</td></tr>
 <tr><td colspan="4" class="doc" id="capturesVar0"><pre>Matches a `LambdaCapture` that refers to the specified `VarDecl`. The
 `VarDecl` can be a separate variable that is captured by value or
Index: clang/include/clang/ASTMatchers/ASTMatchers.h
===================================================================
--- clang/include/clang/ASTMatchers/ASTMatchers.h
+++ clang/include/clang/ASTMatchers/ASTMatchers.h
@@ -2429,6 +2429,7 @@
 /// Matches co_await expressions where the type of the promise is dependent
 extern const internal::VariadicDynCastAllOfMatcher<Stmt, DependentCoawaitExpr>
     dependentCoawaitExpr;
+
 /// Matches co_yield expressions.
 ///
 /// Given
@@ -7716,6 +7717,29 @@
   return InnerMatcher.matches(*Node.getLHS(), Finder, Builder);
 }
 
+/// Matches the substatement associated with a case, default or label statement.
+///
+/// Given
+/// \code
+///   switch (1) { case 1: break; case 2: return; break; default: return; break;
+///   }
+///   foo: return;
+///   bar: break;
+/// \endcode
+///
+/// caseStmt(hasSubstmt(returnStmt()))
+///   matches "case 2: return;"
+/// defaultStmt(hasSubstmt(returnStmt()))
+///   matches "default: return;"
+/// labelStmt(hasSubstmt(breakStmt()))
+///   matches "bar: break;"
+AST_POLYMORPHIC_MATCHER_P(hasSubstatement,
+                          AST_POLYMORPHIC_SUPPORTED_TYPES(CaseStmt, DefaultStmt,
+                                                          LabelStmt),
+                          internal::Matcher<Stmt>, InnerMatcher) {
+  return InnerMatcher.matches(*Node.getSubStmt(), Finder, Builder);
+}
+
 /// Matches declaration that has a given attribute.
 ///
 /// Given
Index: clang/lib/ASTMatchers/Dynamic/Registry.cpp
===================================================================
--- clang/lib/ASTMatchers/Dynamic/Registry.cpp
+++ clang/lib/ASTMatchers/Dynamic/Registry.cpp
@@ -66,7 +66,7 @@
 
 #define REGISTER_MATCHER(name)                                                 \
   registerMatcher(#name, internal::makeMatcherAutoMarshall(                    \
-                             ::clang::ast_matchers::name, #name));
+                             ::clang::ast_matchers::name, #name))
 
 #define REGISTER_MATCHER_OVERLOAD(name)                                        \
   registerMatcher(#name,                                                       \
@@ -143,7 +143,7 @@
   REGISTER_MATCHER(atomicType);
   REGISTER_MATCHER(attr);
   REGISTER_MATCHER(autoType);
-  REGISTER_MATCHER(autoreleasePoolStmt)
+  REGISTER_MATCHER(autoreleasePoolStmt);
   REGISTER_MATCHER(binaryConditionalOperator);
   REGISTER_MATCHER(binaryOperator);
   REGISTER_MATCHER(binaryOperation);
@@ -355,6 +355,7 @@
   REGISTER_MATCHER(hasSpecializedTemplate);
   REGISTER_MATCHER(hasStaticStorageDuration);
   REGISTER_MATCHER(hasStructuredBlock);
+  REGISTER_MATCHER(hasSubstatement);
   REGISTER_MATCHER(hasSyntacticForm);
   REGISTER_MATCHER(hasTargetDecl);
   REGISTER_MATCHER(hasTemplateArgument);
Index: clang/unittests/ASTMatchers/ASTMatchersTraversalTest.cpp
===================================================================
--- clang/unittests/ASTMatchers/ASTMatchersTraversalTest.cpp
+++ clang/unittests/ASTMatchers/ASTMatchersTraversalTest.cpp
@@ -145,6 +145,23 @@
     HasDescendantVariableI));
 }
 
+TEST_P(ASTMatchersTest, HasCaseSubstmt) {
+  EXPECT_TRUE(matches(
+      "void f() { switch (1) { case 1: return; break; default: break; } }",
+      traverse(TK_AsIs, caseStmt(hasSubstatement(returnStmt())))));
+}
+
+TEST_P(ASTMatchersTest, HasDefaultSubstmt) {
+  EXPECT_TRUE(matches(
+      "void f() { switch (1) { case 1: return; break; default: break; } }",
+      traverse(TK_AsIs, defaultStmt(hasSubstatement(breakStmt())))));
+}
+
+TEST_P(ASTMatchersTest, HasLabelSubstmt) {
+  EXPECT_TRUE(matches("void f() { while (1) { bar: break; foo: return; } }",
+                      traverse(TK_AsIs, labelStmt(hasSubstatement(breakStmt())))));
+}
+
 TEST(TypeMatcher, MatchesClassType) {
   TypeMatcher TypeA = hasDeclaration(recordDecl(hasName("A")));