Disable caching of visibility.
The testcase in pr14929 shows that this is extremely hard to do. If we choose
to apply the attribute, that causes the visibility of some decls to change and
that can happen really late (during codegen).
Current gcc warns and ignores the attribute in this testcase with a warning.
This suggest that the correct solution is to find a point in the compilation
where we can compute the visibility and
* assert it was never computed before
* reject any attempts to compute it again in the future (with warnings).
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@172305 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGenCXX/visibility-inlines-hidden.cpp b/test/CodeGenCXX/visibility-inlines-hidden.cpp
index 0681add..e5bc743 100644
--- a/test/CodeGenCXX/visibility-inlines-hidden.cpp
+++ b/test/CodeGenCXX/visibility-inlines-hidden.cpp
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -triple i386-unknown-unknown -fvisibility-inlines-hidden -emit-llvm -o - %s -O2 -disable-llvm-optzns | FileCheck %s
+// RUN: %clang_cc1 -triple i386-unknown-unknown -std=c++11 -fvisibility-inlines-hidden -emit-llvm -o - %s -O2 -disable-llvm-optzns | FileCheck %s
// The trickery with optimization in the run line is to get IR
// generation to emit available_externally function bodies, but not
@@ -147,3 +147,18 @@
template <int Idx_nocapture> void Op() {
}
}
+
+namespace test6 {
+ // just don't crash.
+ template <typename T>
+ void f(T x) {
+ }
+ struct C {
+ static void g() {
+ f([](){});
+ }
+ };
+ void g() {
+ C::g();
+ }
+}
diff --git a/test/CodeGenCXX/visibility.cpp b/test/CodeGenCXX/visibility.cpp
index 0145039..a196dda 100644
--- a/test/CodeGenCXX/visibility.cpp
+++ b/test/CodeGenCXX/visibility.cpp
@@ -1112,3 +1112,47 @@
// CHECK-HIDDEN: define linkonce_odr hidden void @_ZN6test604testINS_1bENS_1aEEEvv
}
}
+
+namespace test61 {
+ template <typename T1>
+ struct Class1
+ {
+ void f1() { f2(); }
+ inline void f2();
+ };
+ template<>
+ inline void Class1<int>::f2()
+ {
+ }
+ void g(Class1<int> *x) {
+ x->f1();
+ }
+}
+namespace test61 {
+ // Just test that we don't crash. Currently we apply this attribute. Current
+ // gcc issues a warning about it being unused since "the type is already
+ // defined". We should probably do the same.
+ template class __attribute__ ((visibility("hidden"))) Class1<int>;
+}
+
+namespace test62 {
+ template <typename T1>
+ struct Class1
+ {
+ void f1() { f2(); }
+ inline void f2() {}
+ };
+ template<>
+ inline void Class1<int>::f2()
+ {
+ }
+ void g(Class1<int> *x) {
+ x->f2();
+ }
+}
+namespace test62 {
+ template class __attribute__ ((visibility("hidden"))) Class1<int>;
+ // Just test that we don't crash. Currently we apply this attribute. Current
+ // gcc issues a warning about it being unused since "the type is already
+ // defined". We should probably do the same.
+}