[asan] Add more dynamic CRT mode tests

Only tests using %clang_cl_asan were using the dynamic CRT before this.
The unit tests and lit tests using %clangxx_asan were using the static
CRT. Many cross-platform tests fail with the dynamic CRT, so I had to
add win32-(static|dynamic)-asan lit features.

Also deletes some redundant tests in TestCases/Windows that started
failing with this switch.

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@285821 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 27 insertions, 2 deletions

diff --git a/lib/asan/tests/CMakeLists.txt b/lib/asan/tests/CMakeLists.txt
index 94febc0c7..3e56763a8 100644
--- a/lib/asan/tests/CMakeLists.txt
+++ b/lib/asan/tests/CMakeLists.txt
@@ -222,6 +222,23 @@ macro(add_asan_tests_for_arch_and_kind arch kind)
                  ${ASAN_UNITTEST_INSTRUMENTED_CFLAGS} -ObjC ${ARGN})
   endif()
 
+  if (MSVC)
+    # With the MSVC CRT, the choice between static and dynamic CRT is made at
+    # compile time with a macro. Simulate the effect of passing /MD to clang-cl.
+    set(ASAN_INST_DYNAMIC_TEST_OBJECTS)
+    foreach(src ${ASAN_INST_TEST_SOURCES})
+      asan_compile(ASAN_INST_DYNAMIC_TEST_OBJECTS ${src} ${arch} ${kind}
+        ${ASAN_UNITTEST_INSTRUMENTED_CFLAGS} -D_MT -D_DLL ${ARGN})
+    endforeach()
+    # Clang links the static CRT by default. Override that to use the dynamic
+    # CRT.
+    set(ASAN_DYNAMIC_UNITTEST_INSTRUMENTED_LINKFLAGS
+      ${ASAN_DYNAMIC_UNITTEST_INSTRUMENTED_LINKFLAGS}
+      -Wl,-nodefaultlib:libcmt,-defaultlib:msvcrt,-defaultlib:oldnames)
+  else()
+    set(ASAN_INST_DYNAMIC_TEST_OBJECTS ${ASAN_INST_TEST_OBJECTS})
+  endif()
+
   # Create the 'default' folder where ASAN tests are produced.
   if(CMAKE_CONFIGURATION_TYPES)
     foreach(build_mode ${CMAKE_CONFIGURATION_TYPES})
@@ -247,7 +264,7 @@ macro(add_asan_tests_for_arch_and_kind arch kind)
 
     add_asan_test(AsanDynamicUnitTests "Asan-${arch}${kind}-Dynamic-Test"
                   ${arch} ${kind} SUBDIR "dynamic"
-                  OBJECTS ${ASAN_INST_TEST_OBJECTS}
+                  OBJECTS ${ASAN_INST_DYNAMIC_TEST_OBJECTS}
                   LINKFLAGS ${ASAN_DYNAMIC_UNITTEST_INSTRUMENTED_LINKFLAGS})
   endif()
 
diff --git a/lib/asan/tests/asan_str_test.cc b/lib/asan/tests/asan_str_test.cc
index 0b86702c4..c790088f8 100644
--- a/lib/asan/tests/asan_str_test.cc
+++ b/lib/asan/tests/asan_str_test.cc
@@ -127,7 +127,15 @@ TEST(AddressSanitizer, StrNLenOOBTest) {
 }
 #endif  // SANITIZER_TEST_HAS_STRNLEN
 
-TEST(AddressSanitizer, StrDupOOBTest) {
+// This test fails with the WinASan dynamic runtime because we fail to intercept
+// strdup.
+#if defined(_MSC_VER) && defined(_DLL)
+#define MAYBE_StrDupOOBTest DISABLED_StrDupOOBTest
+#else
+#define MAYBE_StrDupOOBTest StrDupOOBTest
+#endif
+
+TEST(AddressSanitizer, MAYBE_StrDupOOBTest) {
   size_t size = Ident(42);
   char *str = MallocAndMemsetString(size);
   char *new_str;