option(COMPILER_RT_BUILD_GWP_ASAN "Build GWP-ASan, and link it into SCUDO" ON)
mark_as_advanced(COMPILER_RT_BUILD_GWP_ASAN)
+set(COMPILER_RT_ASAN_SHADOW_SCALE ""
+ CACHE STRING "Override the shadow scale to be used in ASan runtime")
+
+if (NOT COMPILER_RT_ASAN_SHADOW_SCALE STREQUAL "")
+ # Check that the shadow scale value is valid.
+ if (NOT (COMPILER_RT_ASAN_SHADOW_SCALE GREATER -1 AND
+ COMPILER_RT_ASAN_SHADOW_SCALE LESS 8))
+ message(FATAL_ERROR "
+ Invalid ASan Shadow Scale '${COMPILER_RT_ASAN_SHADOW_SCALE}'.")
+ endif()
+
+ set(COMPILER_RT_ASAN_SHADOW_SCALE_LLVM_FLAG
+ -mllvm -asan-mapping-scale=${COMPILER_RT_ASAN_SHADOW_SCALE})
+ set(COMPILER_RT_ASAN_SHADOW_SCALE_DEFINITION
+ ASAN_SHADOW_SCALE=${COMPILER_RT_ASAN_SHADOW_SCALE})
+ set(COMPILER_RT_ASAN_SHADOW_SCALE_FLAG
+ -D${COMPILER_RT_ASAN_SHADOW_SCALE_DEFINITION})
+endif()
+
if(FUCHSIA)
set(COMPILER_RT_HWASAN_WITH_INTERCEPTORS_DEFAULT OFF)
else()
// || `[0x30000000, 0x35ffffff]` || LowShadow ||
// || `[0x00000000, 0x2fffffff]` || LowMem ||
-#define SHADOW_SCALE 3
-
+#if defined(ASAN_SHADOW_SCALE)
+static const u64 kDefaultShadowScale = ASAN_SHADOW_SCALE;
+#else
+static const u64 kDefaultShadowScale = 3;
+#endif
static const u64 kDefaultShadowSentinel = ~(uptr)0;
+#define SHADOW_SCALE kDefaultShadowScale
+
#if SANITIZER_FUCHSIA
# define SHADOW_OFFSET_CONST (0)
#elif SANITIZER_WORDSIZE == 32
set(ASAN_UNITTEST_COMMON_CFLAGS
${COMPILER_RT_UNITTEST_CFLAGS}
${COMPILER_RT_GTEST_CFLAGS}
+ ${COMPILER_RT_ASAN_SHADOW_SCALE_LLVM_FLAG}
-I${COMPILER_RT_SOURCE_DIR}/include
-I${COMPILER_RT_SOURCE_DIR}/lib
-I${COMPILER_RT_SOURCE_DIR}/lib/asan
# Use -D instead of definitions to please custom compile command.
list(APPEND ASAN_UNITTEST_COMMON_CFLAGS
+ ${COMPILER_RT_ASAN_SHADOW_SCALE_FLAG}
-DASAN_HAS_IGNORELIST=1
-DASAN_HAS_EXCEPTIONS=1
-DASAN_UAR=0
#define BAD_ACCESS(ptr, offset) \
EXPECT_TRUE(__asan_address_is_poisoned(ptr + offset))
+#if !defined(ASAN_SHADOW_SCALE) || ASAN_SHADOW_SCALE == 3
static const char* kUseAfterPoisonErrorMessage = "use-after-poison";
TEST(AddressSanitizerInterface, SimplePoisonMemoryRegionTest) {
BAD_ACCESS(array, 96);
free(array);
}
+#endif // !defined(ASAN_SHADOW_SCALE) || ASAN_SHADOW_SCALE == 3
TEST(AddressSanitizerInterface, PushAndPopWithPoisoningTest) {
// Vector of capacity 20