Instantiate exception specifications when instantiating function types (other

than the type of a function declaration). We previously didn't instantiate
these at all! This also covers the pathological case where the only mention of
a parameter pack is within the exception specification; this gives us a second
way (other than alias templates) to reach the horrible state where a type
contains an unexpanded pack, but its canonical type does not.

llvm-svn: 217995

1 files changed, 20 insertions, 1 deletions

diff --git a/clang/test/SemaTemplate/instantiate-exception-spec.cpp b/clang/test/SemaTemplate/instantiate-exception-spec.cpp
index 993ee8dfae1..d3411722283 100644
--- a/clang/test/SemaTemplate/instantiate-exception-spec.cpp
+++ b/clang/test/SemaTemplate/instantiate-exception-spec.cpp
@@ -1,5 +1,7 @@
-// RUN: %clang_cc1 -fsyntax-only -verify %s
+// RUN: %clang_cc1 -fexceptions -fcxx-exceptions -verify %s -DERRORS
+// RUN: %clang_cc1 -fexceptions -fcxx-exceptions -emit-llvm-only %s
 
+#ifdef ERRORS
 template<typename T> void f1(T*) throw(T); // expected-error{{incomplete type 'Incomplete' is not allowed in exception specification}}
 struct Incomplete; // expected-note{{forward}}
 
@@ -7,3 +9,20 @@ void test_f1(Incomplete *incomplete_p, int *int_p) {
   f1(int_p);
   f1(incomplete_p); // expected-note{{instantiation of}}
 }
+#endif
+
+template<typename T> void f(void (*p)() throw(T)) {
+#ifdef ERRORS
+  void (*q)() throw(char) = p; // expected-error {{target exception spec}}
+
+  extern void (*p2)() throw(T);
+  void (*q2)() throw(char) = p2; // expected-error {{target exception spec}}
+
+  extern void (*p3)() throw(char);
+  void (*q3)() throw(T) = p3; // expected-error {{target exception spec}}
+
+  void (*q4)() throw(T) = p2; // ok
+#endif
+  p();
+}
+void g() { f<int>(0); } // expected-note {{instantiation of}}