[UBSan] Use shared library for UBSan on OS X (compiler-rt part).

Summary:
Switch to shared library for UBSan. Add support for building
UBSan on OSX and iossim by cargo-culting ASan build rules.

Test Plan: regression test suite

Reviewers: zaks.anna, kubabrecka

Subscribers: llvm-commits

Differential Revision: http://reviews.llvm.org/D8473

llvm-svn: 233036

compiler-rt/CMakeLists.txt

@@ -304,7 +304,8 @@ if(APPLE)
   set(DARWIN_iossim_CFLAGS
     -mios-simulator-version-min=7.0 -isysroot ${IOSSIM_SDK_DIR})
   set(DARWIN_osx_LINKFLAGS -mmacosx-version-min=${SANITIZER_MIN_OSX_VERSION}
-     -stdlib=libc++)
+     -stdlib=libc++
+     -lc++abi)
   set(DARWIN_iossim_LINKFLAGS
     -Wl,-ios_simulator_version_min,7.0.0
     -mios-simulator-version-min=7.0

compiler-rt/lib/ubsan/CMakeLists.txt

@@ -22,13 +22,19 @@ set(UBSAN_CXXFLAGS ${SANITIZER_COMMON_CFLAGS})
 add_custom_target(ubsan)
 
 if(APPLE)
-  # Build universal binary on APPLE.
-  add_compiler_rt_osx_static_runtime(clang_rt.ubsan_osx
-    ARCH ${UBSAN_SUPPORTED_ARCH}
-    SOURCES ${UBSAN_SOURCES} ${UBSAN_CXX_SOURCES}
-            $<TARGET_OBJECTS:RTSanitizerCommon.osx>
-    CFLAGS ${UBSAN_CXXFLAGS})
-  add_dependencies(ubsan clang_rt.ubsan_osx)
+  foreach(os ${SANITIZER_COMMON_SUPPORTED_DARWIN_OS})
+    add_compiler_rt_darwin_object_library(RTUbsan ${os}
+      ARCH ${UBSAN_SUPPORTED_ARCH}
+      SOURCES ${UBSAN_SOURCES} ${UBSAN_CXX_SOURCES}
+      CFLAGS ${UBSAN_CXXFLAGS})
+
+    add_compiler_rt_darwin_dynamic_runtime(clang_rt.ubsan_${os}_dynamic ${os}
+      ARCH ${UBSAN_SUPPORTED_ARCH}
+      SOURCES $<TARGET_OBJECTS:RTUbsan.${os}>
+              $<TARGET_OBJECTS:RTSanitizerCommon.${os}>)
+
+    add_dependencies(ubsan clang_rt.ubsan_${os}_dynamic)
+  endforeach()
 else()
   # Build separate libraries for each target.
   foreach(arch ${UBSAN_SUPPORTED_ARCH})

compiler-rt/make/platform/clang_darwin.mk

@@ -119,8 +119,11 @@ UniversalArchs.asan_osx_dynamic := $(call CheckArches,i386 x86_64 x86_64h,asan_o
 Configs += asan_iossim_dynamic
 UniversalArchs.asan_iossim_dynamic := $(call CheckArches,i386 x86_64,asan_iossim_dynamic,$(IOSSIM_SDK))
 
-Configs += ubsan_osx
-UniversalArchs.ubsan_osx := $(call CheckArches,i386 x86_64 x86_64h,ubsan_osx,$(OSX_SDK))
+Configs += ubsan_osx_dynamic
+UniversalArchs.ubsan_osx_dynamic := $(call CheckArches,i386 x86_64 x86_64h,ubsan_osx_dynamic,$(OSX_SDK))
+
+Configs += ubsan_iossim_dynamic
+UniversalArchs.ubsan_iossim_dynamic := $(call CheckArches,i386 x86_64,ubsan_iossim_dynamic,$(IOSSIM_SDK))
 
 # Darwin 10.6 has a bug in cctools that makes it unable to use ranlib on our ARM
 # object files. If we are on that platform, strip out all ARM archs. We still
@@ -172,24 +175,33 @@ IOSSIM_DEPLOYMENT_ARGS += -isysroot $(IOSSIM_SDK)
 CFLAGS.eprintf		:= $(CFLAGS) $(OSX_DEPLOYMENT_ARGS)
 CFLAGS.10.4		:= $(CFLAGS) $(OSX_DEPLOYMENT_ARGS)
 
+SANITIZER_MACOSX_DEPLOYMENT_ARGS := -mmacosx-version-min=10.7
+SANITIZER_IOSSIM_DEPLOYMENT_ARGS := -mios-simulator-version-min=7.0 \
+  -isysroot $(IOSSIM_SDK)
+SANITIZER_CFLAGS := -fno-builtin -gline-tables-only
+
 CFLAGS.asan_osx_dynamic := \
-	$(CFLAGS) -mmacosx-version-min=10.7 \
+	$(CFLAGS) $(SANITIZER_MACOSX_DEPLOYMENT_ARGS) \
+	$(SANITIZER_CFLAGS) \
 	-stdlib=libc++ \
-	-fno-builtin \
-	-gline-tables-only \
 	-DMAC_INTERPOSE_FUNCTIONS=1 \
 	-DASAN_DYNAMIC=1
 
 CFLAGS.asan_iossim_dynamic := \
-	$(CFLAGS) -mios-simulator-version-min=7.0 \
-        -isysroot $(IOSSIM_SDK) \
-        -fno-builtin \
-	-gline-tables-only \
+	$(CFLAGS) $(SANITIZER_IOSSIM_DEPLOYMENT_ARGS) \
+  $(SANITIZER_CFLAGS) \
 	-DMAC_INTERPOSE_FUNCTIONS=1 \
 	-DASAN_DYNAMIC=1
 
-CFLAGS.ubsan_osx := $(CFLAGS) -mmacosx-version-min=10.6 \
-	-fno-builtin
+CFLAGS.ubsan_osx_dynamic := \
+	$(CFLAGS) $(SANITIZER_MACOSX_DEPLOYMENT_ARGS) \
+	$(SANITIZER_CFLAGS) \
+	-stdlib=libc++
+
+CFLAGS.ubsan_iossim_dynamic := \
+	$(CFLAGS) $(SANITIZER_IOSSIM_DEPLOYMENT_ARGS) \
+  $(SANITIZER_CFLAGS)
+
 
 CFLAGS.ios.i386		:= $(CFLAGS) $(IOSSIM_DEPLOYMENT_ARGS)
 CFLAGS.ios.x86_64	:= $(CFLAGS) $(IOSSIM_DEPLOYMENT_ARGS)
@@ -220,24 +232,29 @@ CFLAGS.profile_ios.armv7k := $(CFLAGS) $(IOS_DEPLOYMENT_ARGS)
 CFLAGS.profile_ios.armv7s := $(CFLAGS) $(IOS_DEPLOYMENT_ARGS)
 CFLAGS.profile_ios.arm64  := $(CFLAGS) $(IOS6_DEPLOYMENT_ARGS)
 
-# Configure the asan_osx_dynamic library to be built shared.
+SANITIZER_LDFLAGS := -undefined dynamic_lookup
+
 SHARED_LIBRARY.asan_osx_dynamic := 1
-LDFLAGS.asan_osx_dynamic := -lc++ -undefined dynamic_lookup -install_name @rpath/libclang_rt.asan_osx_dynamic.dylib \
-  -mmacosx-version-min=10.7
+LDFLAGS.asan_osx_dynamic := -lc++ $(SANITIZER_LDFLAGS) -install_name @rpath/libclang_rt.asan_osx_dynamic.dylib \
+  $(SANITIZER_MACOSX_DEPLOYMENT_ARGS)
 
-# Configure the asan_iossim_dynamic library to be built shared.
 SHARED_LIBRARY.asan_iossim_dynamic := 1
-# configure+make uses Clang, so we're using isysroot instead of --sysroot
-# or -Wl,-syslibroot.
-LDFLAGS.asan_iossim_dynamic := -undefined dynamic_lookup -install_name @rpath/libclang_rt.asan_iossim_dynamic.dylib \
-  -Wl,-ios_simulator_version_min,7.0.0 \
-  -mios-simulator-version-min=7.0 -isysroot $(IOSSIM_SDK)
+LDFLAGS.asan_iossim_dynamic := $(SANITIZER_LDFLAGS) -install_name @rpath/libclang_rt.asan_iossim_dynamic.dylib \
+  -Wl,-ios_simulator_version_min,7.0.0 $(SANITIZER_IOSSIM_DEPLOYMENT_ARGS)
+
+SHARED_LIBRARY.ubsan_osx_dynamic := 1
+LDFLAGS.ubsan_osx_dynamic := -lc++ $(SANITIZER_LDFLAGS) -install_name @rpath/libclang_rt.ubsan_osx_dynamic.dylib \
+  $(SANITIZER_MACOSX_DEPLOYMENT_ARGS)
+
+SHARED_LIBRARY.ubsan_iossim_dynamic := 1
+LDFLAGS.ubsan_iossim_dynamic := $(SANITIZER_LDFLAGS) -install_name @rpath/libclang_rt.ubsan_iossim_dynamic.dylib \
+  -Wl,-ios_simulator_version_min,7.0.0 $(SANITIZER_IOSSIM_DEPLOYMENT_ARGS)
 
 ifneq ($(OSX_SDK),)
 CFLAGS.asan_osx_dynamic += -isysroot $(OSX_SDK)
 LDFLAGS.asan_osx_dynamic += -isysroot $(OSX_SDK)
-CFLAGS.ubsan_osx += -isysroot $(OSX_SDK)
-LDFLAGS.ubsan_osx += -isysroot $(OSX_SDK)
+CFLAGS.ubsan_osx_dynamic += -isysroot $(OSX_SDK)
+LDFLAGS.ubsan_osx_dynamic += -isysroot $(OSX_SDK)
 endif
 
 FUNCTIONS.eprintf := eprintf
@@ -260,15 +277,18 @@ FUNCTIONS.profile_ios := $(FUNCTIONS.profile_osx)
 FUNCTIONS.asan_osx_dynamic := $(AsanFunctions) $(AsanCXXFunctions) \
                               $(InterceptionFunctions) \
                               $(SanitizerCommonFunctions) \
-	                      $(AsanDynamicFunctions)
+                              $(AsanDynamicFunctions)
 
 FUNCTIONS.asan_iossim_dynamic := $(AsanFunctions) $(AsanCXXFunctions) \
                                  $(InterceptionFunctions) \
                                  $(SanitizerCommonFunctions) \
-	                         $(AsanDynamicFunctions)
+                                 $(AsanDynamicFunctions)
+
+FUNCTIONS.ubsan_osx_dynamic := $(UbsanFunctions) $(UbsanCXXFunctions) \
+                               $(SanitizerCommonFunctions)
 
-FUNCTIONS.ubsan_osx := $(UbsanFunctions) $(UbsanCXXFunctions) \
-                       $(SanitizerCommonFunctions)
+FUNCTIONS.ubsan_iossim_dynamic := $(UbsanFunctions) $(UbsanCXXFunctions) \
+                                  $(SanitizerCommonFunctions)
 
 CCKEXT_PROFILE_FUNCTIONS := \
 	InstrProfiling \

compiler-rt/test/ubsan/TestCases/TypeCheck/vptr-virtual-base.cpp

@@ -1,9 +1,6 @@
 // RUN: %clangxx -frtti -fsanitize=vptr -fno-sanitize-recover=vptr -g %s -O3 -o %t
 // RUN: not %run %t 2>&1 | FileCheck %s
 
-// FIXME: This test produces linker errors on Darwin.
-// XFAIL: darwin
-
 struct S { virtual int f() { return 0; } };
 struct T : virtual S {};