diff options
| author | Vedant Kumar <vsk@apple.com> | 2017-10-14 01:23:30 +0000 |
|---|---|---|
| committer | Vedant Kumar <vsk@apple.com> | 2017-10-14 01:23:30 +0000 |
| commit | 94cbcd43babae9b83e826f25ee8aa21069c53d94 (patch) | |
| tree | 4304c545ee1e103b64dd3591a1a58b0bedb09073 /test/CodeGenCXX/catch-undef-behavior.cpp | |
| parent | 4318ef1cb398b9b72aea287a815c09cfe68a2b27 (diff) | |
[ubsan] Don't emit function signatures for non-static member functions
The function sanitizer only checks indirect calls through function
pointers. This excludes all non-static member functions (constructor
calls, calls through thunks, etc. all use a separate code path). Don't
emit function signatures for functions that won't be checked.
Apart from cutting down on code size, this should fix a regression on
Linux caused by r313096. For context, see the mailing list discussion:
r313096 - [ubsan] Function Sanitizer: Don't require writable text segments
Testing: check-clang, check-ubsan
Differential Revision: https://reviews.llvm.org/D38913
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@315786 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGenCXX/catch-undef-behavior.cpp')
| -rw-r--r-- | test/CodeGenCXX/catch-undef-behavior.cpp | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/test/CodeGenCXX/catch-undef-behavior.cpp b/test/CodeGenCXX/catch-undef-behavior.cpp index aa3da1071d..e828753898 100644 --- a/test/CodeGenCXX/catch-undef-behavior.cpp +++ b/test/CodeGenCXX/catch-undef-behavior.cpp @@ -426,6 +426,66 @@ void indirect_function_call(void (*p)(int)) { p(42); } +namespace FunctionSanitizerVirtualCalls { +struct A { + virtual void f() {} + virtual void g() {} + void h() {} +}; + +struct B : virtual A { + virtual void b() {} + virtual void f(); + void g() final {} + static void q() {} +}; + +void B::f() {} + +void force_irgen() { + A a; + a.g(); + a.h(); + + B b; + b.f(); + b.b(); + b.g(); + B::q(); +} + +// CHECK-LABEL: define void @_ZN29FunctionSanitizerVirtualCalls1B1fEv +// CHECK-NOT: prologue +// +// CHECK-LABEL: define void @_ZTv0_n24_N29FunctionSanitizerVirtualCalls1B1fEv +// CHECK-NOT: prologue +// +// CHECK-LABEL: define void @_ZN29FunctionSanitizerVirtualCalls11force_irgenEv() +// CHECK: prologue +// +// CHECK-LABEL: define linkonce_odr void @_ZN29FunctionSanitizerVirtualCalls1AC1Ev +// CHECK-NOT: prologue +// +// CHECK-LABEL: define linkonce_odr void @_ZN29FunctionSanitizerVirtualCalls1A1gEv +// CHECK-NOT: prologue +// +// CHECK-LABEL: define linkonce_odr void @_ZN29FunctionSanitizerVirtualCalls1A1hEv +// CHECK-NOT: prologue +// +// CHECK-LABEL: define linkonce_odr void @_ZN29FunctionSanitizerVirtualCalls1BC1Ev +// CHECK-NOT: prologue +// +// CHECK-LABEL: define linkonce_odr void @_ZN29FunctionSanitizerVirtualCalls1B1bEv +// CHECK-NOT: prologue +// +// CHECK-LABEL: define linkonce_odr void @_ZN29FunctionSanitizerVirtualCalls1B1gEv +// CHECK-NOT: prologue +// +// CHECK-LABEL: define linkonce_odr void @_ZN29FunctionSanitizerVirtualCalls1B1qEv +// CHECK: prologue + +} + namespace UpcastPointerTest { struct S {}; struct T : S { double d; }; |