Fix -fno-rtti -fexceptions by forcing the emission of (non-"builtin") RTTI

when used by the exceptions routines.  Fixes PR 6974.

llvm-svn: 102684

1 files changed, 48 insertions, 0 deletions

diff --git a/clang/test/CodeGenCXX/exceptions-no-rtti.cpp b/clang/test/CodeGenCXX/exceptions-no-rtti.cpp
new file mode 100644
index 00000000000..c26abb26af9
--- /dev/null
+++ b/clang/test/CodeGenCXX/exceptions-no-rtti.cpp
@@ -0,0 +1,48 @@
+// RUN: %clang_cc1 -fno-rtti -fexceptions %s -triple=x86_64-apple-darwin10 -emit-llvm -o - | FileCheck %s
+
+// CHECK: @_ZTIN5test11AE = weak_odr constant
+// CHECK: @_ZTIN5test11BE = weak_odr constant
+// CHECK: @_ZTIN5test11CE = weak_odr constant
+// CHECK: @_ZTIN5test11DE = weak_odr constant
+// CHECK: @_ZTIPN5test11DE = weak_odr constant {{.*}} @_ZTIN5test11DE
+
+// PR6974: this shouldn't crash
+namespace test0 {
+  class err {};
+
+  void f(void) {
+    try {
+    } catch (err &) {
+    }
+  }
+}
+
+namespace test1 {
+  // These classes have key functions defined out-of-line.
+  // Under normal circumstances, we wouldn't generate RTTI for them;
+  // under -fno-rtti, we generate RTTI only when required by EH.
+  class A { virtual void foo(); };
+  class B { virtual void foo(); };
+  class C { virtual void foo(); };
+  class D { virtual void foo(); };
+
+  void opaque();
+
+  void test0() {
+    throw A();
+  }
+
+  void test1() throw(B) {
+    opaque();
+  }
+
+  void test2() {
+    try {
+      opaque();
+    } catch (C&) {}
+  }
+
+  void test3(D *ptr) {
+    throw ptr;
+  };
+}