From c185aa7d925ea21a08951798bd3980e93d2caf35 Mon Sep 17 00:00:00 2001
From: David Majnemer <david.majnemer@gmail.com>
Date: Fri, 27 Sep 2013 04:14:12 +0000
Subject: Sema: Respect -fdelayed-template-parsing when parsing constexpr
 functions

Functions declared as constexpr must have their parsing delayed in
-fdelayed-template-parsing mode so as not to upset later template
instantiation.

N.B. My reading of the standard makes it seem like delayed template
parsing is at odds with constexpr.  We may want to make refinements in
other places in clang to make constexpr play nicer with this feature.

This fixes PR17334.

llvm-svn: 191484
---
 clang/test/Parser/DelayedTemplateParsing.cpp | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'clang/test/Parser/DelayedTemplateParsing.cpp')

diff --git a/clang/test/Parser/DelayedTemplateParsing.cpp b/clang/test/Parser/DelayedTemplateParsing.cpp
index 3e429d41162..201fe1b466d 100644
--- a/clang/test/Parser/DelayedTemplateParsing.cpp
+++ b/clang/test/Parser/DelayedTemplateParsing.cpp
@@ -102,3 +102,15 @@ namespace rdar11700604 {
   };
 }
 
+namespace PR17334 {
+
+template <typename = void> struct ArrayRef {
+  constexpr ArrayRef() {}
+};
+template <typename = void> void CreateConstInBoundsGEP2_32() {
+  ArrayRef<> IdxList;
+}
+void LLVMBuildStructGEP() { CreateConstInBoundsGEP2_32(); }
+
+}
+
-- 
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