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--- a/tools/clang/include/clang/Sema/ScopeInfo.h
+++ b/tools/clang/include/clang/Sema/ScopeInfo.h
@@ -560,6 +560,7 @@
void markUsed(bool IsODRUse) { (IsODRUse ? ODRUsed : NonODRUsed) = true; }
VarDecl *getVariable() const {
+ assert(isVariableCapture());
return VarAndNestedAndThis.getPointer();
}
--- a/tools/clang/lib/Sema/SemaLambda.cpp
+++ b/tools/clang/lib/Sema/SemaLambda.cpp
@@ -1481,6 +1481,9 @@
if (CaptureHasSideEffects(From))
return;
+ if (From.isVLATypeCapture())
+ return;
+
auto diag = Diag(From.getLocation(), diag::warn_unused_lambda_capture);
if (From.isThisCapture())
diag << "'this'";
--- a/tools/clang/test/SemaCXX/warn-unused-lambda-capture.cpp
+++ b/tools/clang/test/SemaCXX/warn-unused-lambda-capture.cpp
@@ -191,3 +191,12 @@
void test_use_template() {
test_templated<int>(); // expected-note{{in instantiation of function template specialization 'test_templated<int>' requested here}}
}
+
+namespace pr35555 {
+int a;
+void b() {
+ int c[a];
+ auto vla_used = [&c] { return c[0]; };
+ auto vla_unused = [&c] {}; // expected-warning{{lambda capture 'c' is not used}}
+}
+} // namespace pr35555
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