From 222e2a7620e6520ffaf4fc4e69d79c18da31542e Mon Sep 17 00:00:00 2001 From: "Zancanaro; Carlo" Date: Mon, 24 Sep 2012 09:58:17 +1000 Subject: Add the clang library to the repo (with some of my changes, too). --- clang/test/PCH/chain-implicit-definition.cpp | 39 ++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 clang/test/PCH/chain-implicit-definition.cpp (limited to 'clang/test/PCH/chain-implicit-definition.cpp') diff --git a/clang/test/PCH/chain-implicit-definition.cpp b/clang/test/PCH/chain-implicit-definition.cpp new file mode 100644 index 0000000..245e8f9 --- /dev/null +++ b/clang/test/PCH/chain-implicit-definition.cpp @@ -0,0 +1,39 @@ +// no PCH +// RUN: %clang_cc1 -emit-llvm-only -include %s -include %s %s +// with PCH +// RUN: %clang_cc1 -emit-llvm-only -chain-include %s -chain-include %s %s +#if !defined(PASS1) +#define PASS1 + +// A base with a virtual dtor. +struct A { + virtual ~A(); +}; + +// A derived class with an implicit virtual dtor. +struct B : A { + // Key function to suppress vtable definition. + virtual void virt(); +}; + +#elif !defined(PASS2) +#define PASS2 + +// Further derived class that requires ~B(). +// Causes definition of ~B(), but it was lost when saving PCH. +struct C : B { + C(); + ~C() {} +}; + +#else + +void foo() { + // Variable that requires ~C(). + C c; +} + +// VTable placement would again cause definition of ~B(), hiding the bug, +// if not for B::virt(), which suppresses the placement. + +#endif -- cgit v1.2.3