[UBSan] Run all UBSan tests in 32-bit mode as well.

We build and support UBSan on 32-bit platforms. We should run tests
there as well. Fixes PR22683.

llvm-svn: 230662

compiler-rt/test/ubsan/CMakeLists.txt

@@ -1,18 +1,30 @@
 set(UBSAN_LIT_TESTS_DIR ${CMAKE_CURRENT_SOURCE_DIR})
 
-set(UBSAN_LIT_TEST_MODE "Standalone")
-configure_lit_site_cfg(
-  ${CMAKE_CURRENT_SOURCE_DIR}/lit.site.cfg.in
-  ${CMAKE_CURRENT_BINARY_DIR}/UbsanConfig/lit.site.cfg)
-set(UBSAN_TESTSUITES ${CMAKE_CURRENT_BINARY_DIR}/UbsanConfig)
-
-if(COMPILER_RT_HAS_ASAN)
-  set(UBSAN_LIT_TEST_MODE "AddressSanitizer")
+set(UBSAN_TESTSUITES)
+foreach(arch ${UBSAN_SUPPORTED_ARCH})
+  set(UBSAN_TEST_TARGET_ARCH ${arch})
+  if(${arch} MATCHES "arm|aarch64")
+    # This is only true if we're cross-compiling.
+    set(UBSAN_TEST_TARGET_CFLAGS ${COMPILER_RT_TEST_COMPILER_CFLAGS})
+  else()
+    get_target_flags_for_arch(${arch} UBSAN_TEST_TARGET_CFLAGS)
+  endif()
+  set(UBSAN_LIT_TEST_MODE "Standalone")
+  set(CONFIG_NAME ${UBSAN_LIT_TEST_MODE}-${arch})
   configure_lit_site_cfg(
     ${CMAKE_CURRENT_SOURCE_DIR}/lit.site.cfg.in
-    ${CMAKE_CURRENT_BINARY_DIR}/AsanConfig/lit.site.cfg)
-  list(APPEND UBSAN_TESTSUITES ${CMAKE_CURRENT_BINARY_DIR}/AsanConfig)
-endif()
+    ${CMAKE_CURRENT_BINARY_DIR}/${CONFIG_NAME}/lit.site.cfg)
+  list(APPEND UBSAN_TESTSUITES ${CMAKE_CURRENT_BINARY_DIR}/${CONFIG_NAME})
+
+  if(COMPILER_RT_HAS_ASAN)
+    set(UBSAN_LIT_TEST_MODE "AddressSanitizer")
+    set(CONFIG_NAME ${UBSAN_LIT_TEST_MODE}-${arch})
+    configure_lit_site_cfg(
+       ${CMAKE_CURRENT_SOURCE_DIR}/lit.site.cfg.in
+       ${CMAKE_CURRENT_BINARY_DIR}/${CONFIG_NAME}/lit.site.cfg)
+    list(APPEND UBSAN_TESTSUITES ${CMAKE_CURRENT_BINARY_DIR}/${CONFIG_NAME})
+  endif()
+endforeach()
 
 set(UBSAN_TEST_DEPS ${SANITIZER_COMMON_LIT_TEST_DEPS})
 if(NOT COMPILER_RT_STANDALONE_BUILD)
@@ -22,4 +34,4 @@ endif()
 add_lit_testsuite(check-ubsan "Running UndefinedBehaviorSanitizer tests"
   ${UBSAN_TESTSUITES}
   DEPENDS ${UBSAN_TEST_DEPS})
-set_target_properties(check-ubsan PROPERTIES FOLDER "UBSan unittests")
+set_target_properties(check-ubsan PROPERTIES FOLDER "UBSan tests")

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

@@ -26,6 +26,7 @@
 // FIXME: This test produces linker errors on Darwin.
 // XFAIL: darwin
 // REQUIRES: stable-runtime
+#include <new>
 
 extern "C" {
 const char *__ubsan_default_options() {
@@ -76,12 +77,15 @@ int main(int, char **argv) {
   (void)((T&)u).S::v();
 
   char Buffer[sizeof(U)] = {};
+  char TStorage[sizeof(T)];
   switch (argv[1][1]) {
   case '0':
     p = reinterpret_cast<T*>(Buffer);
     break;
   case 'S':
-    p = reinterpret_cast<T*>(new S);
+    // Make sure p points to the memory chunk of sufficient size to prevent ASan
+    // reports about out-of-bounds access.
+    p = reinterpret_cast<T*>(new(TStorage) S);
     break;
   case 'T':
     p = new T;

compiler-rt/test/ubsan/lit.common.cfg

@@ -17,7 +17,7 @@ config.test_source_root = os.path.dirname(__file__)
 # Choose between standalone and UBSan+ASan modes.
 ubsan_lit_test_mode = get_required_attr(config, 'ubsan_lit_test_mode')
 if ubsan_lit_test_mode == "Standalone":
-  config.name = 'UndefinedBehaviorSanitizer-Standalone'
+  config.name = 'UBSan-Standalone-' + config.target_arch
   config.available_features.add("ubsan-standalone")
   clang_ubsan_cflags = []
 elif ubsan_lit_test_mode == "AddressSanitizer":
@@ -25,7 +25,7 @@ elif ubsan_lit_test_mode == "AddressSanitizer":
     # ubsan-asan doesn't yet work on Darwin,
     # see http://llvm.org/bugs/show_bug.cgi?id=21112.
     config.unsupported = True
-  config.name = 'UndefinedBehaviorSanitizer-AddressSanitizer'
+  config.name = 'UBSan-ASan-' + config.target_arch
   config.available_features.add("ubsan-asan")
   clang_ubsan_cflags = ["-fsanitize=address"]
   config.environment['ASAN_OPTIONS'] = 'detect_leaks=0'

compiler-rt/test/ubsan/lit.site.cfg.in

@@ -3,6 +3,8 @@ lit_config.load_config(config, "@COMPILER_RT_BINARY_DIR@/test/lit.common.configu
 
 # Tool-specific config options.
 config.ubsan_lit_test_mode = "@UBSAN_LIT_TEST_MODE@"
+config.target_cflags = "@UBSAN_TEST_TARGET_CFLAGS@"
+config.target_arch = "@UBSAN_TEST_TARGET_ARCH@"
 
 # Load tool-specific config that would do the real work.
 lit_config.load_config(config, "@UBSAN_LIT_TESTS_DIR@/lit.common.cfg")