From: Richard Trieu <rtrieu@google.com>
Date: Sat, 11 Nov 2017 00:54:25 +0000 (+0000)
Subject: Handle lambda captures of variable length arrays in profiling and printing.
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=b947cc35e20b4818236c04ea5a9268e713e5c0ad;p=clang

Handle lambda captures of variable length arrays in profiling and printing.

From http://reviews.llvm.org/D4368 these cases were thought to not be reachable
and the checks removed before the rest of the code was committed in r216649.
However, these cases are reachable and the checks are added back.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@317957 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/AST/StmtPrinter.cpp b/lib/AST/StmtPrinter.cpp
index 371d3e181d..09092743f0 100644
--- a/lib/AST/StmtPrinter.cpp
+++ b/lib/AST/StmtPrinter.cpp
@@ -2232,6 +2232,9 @@ void StmtPrinter::VisitLambdaExpr(LambdaExpr *Node) {
                                  CEnd = Node->explicit_capture_end();
        C != CEnd;
        ++C) {
+    if (C->capturesVLAType())
+      continue;
+
     if (NeedComma)
       OS << ", ";
     NeedComma = true;
diff --git a/lib/AST/StmtProfile.cpp b/lib/AST/StmtProfile.cpp
index 9acd79bc2c..6cc77f682e 100644
--- a/lib/AST/StmtProfile.cpp
+++ b/lib/AST/StmtProfile.cpp
@@ -1590,6 +1590,9 @@ StmtProfiler::VisitLambdaExpr(const LambdaExpr *S) {
   for (LambdaExpr::capture_iterator C = S->explicit_capture_begin(),
                                  CEnd = S->explicit_capture_end();
        C != CEnd; ++C) {
+    if (C->capturesVLAType())
+      continue;
+
     ID.AddInteger(C->getCaptureKind());
     switch (C->getCaptureKind()) {
     case LCK_StarThis:
diff --git a/test/SemaCXX/cxx11-ast-print.cpp b/test/SemaCXX/cxx11-ast-print.cpp
index 9c617af4e9..17dcbcb3f7 100644
--- a/test/SemaCXX/cxx11-ast-print.cpp
+++ b/test/SemaCXX/cxx11-ast-print.cpp
@@ -55,4 +55,8 @@ struct B : A {
 ;
 // CHECK-NOT: ;
 
+void g(int n) {
+  int buffer[n];     // CHECK: int buffer[n];
+  [&buffer]() {}();  // CHECK: [&buffer]
+}