Index: lib/StaticAnalyzer/Core/ExprEngine.cpp
===================================================================
--- lib/StaticAnalyzer/Core/ExprEngine.cpp
+++ lib/StaticAnalyzer/Core/ExprEngine.cpp
@@ -2466,6 +2466,11 @@
 		      ProgramPoint::PostLValueKind);
     return;
   }
+  if (const auto* BD = dyn_cast<BindingDecl>(D)) {
+    // FIXME: proper support for bound declarations.
+    // For now, let's just prevent crashing.
+    return;
+  }
 
   llvm_unreachable("Support for this Decl not implemented.");
 }
Index: test/Analysis/structured_bindings.cc
===================================================================
--- /dev/null
+++ test/Analysis/structured_bindings.cc
@@ -0,0 +1,10 @@
+// RUN: %clang_analyze_cc1 -std=c++17 -analyzer-checker=core -verify %s
+
+// expected-no-diagnostics
+struct s { int a; };
+int foo() {
+    auto[a] = s{1}; // FIXME: proper modelling
+    if (a) {
+    }
+}
+