1 files changed, 32 insertions, 0 deletions
diff --git a/test/ubsan/TestCases/Integer/uadd-overflow.cpp b/test/ubsan/TestCases/Integer/uadd-overflow.cpp
new file mode 100644
index 000000000000..7a96880fe636
--- /dev/null
+++ b/test/ubsan/TestCases/Integer/uadd-overflow.cpp
@@ -0,0 +1,32 @@
+// RUN: %clangxx -DADD_I32 -fsanitize=unsigned-integer-overflow %s -o %t && %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-ADD_I32
+// RUN: %clangxx -DADD_I64 -fsanitize=unsigned-integer-overflow %s -o %t && %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-ADD_I64
+// RUN: %clangxx -DADD_I128 -fsanitize=unsigned-integer-overflow %s -o %t && %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-ADD_I128
+
+#include <stdint.h>
+#include <stdio.h>
+
+int main() {
+  // These promote to 'int'.
+  (void)(uint8_t(0xff) + uint8_t(0xff));
+  (void)(uint16_t(0xf0fff) + uint16_t(0x0fff));
+
+#ifdef ADD_I32
+  uint32_t k = 0x87654321;
+  k += 0xedcba987;
+  // CHECK-ADD_I32: uadd-overflow.cpp:[[@LINE-1]]:5: runtime error: unsigned integer overflow: 2271560481 + 3989547399 cannot be represented in type 'unsigned int'
+#endif
+
+#ifdef ADD_I64
+  (void)(uint64_t(10000000000000000000ull) + uint64_t(9000000000000000000ull));
+  // CHECK-ADD_I64: 10000000000000000000 + 9000000000000000000 cannot be represented in type 'unsigned {{long( long)?}}'
+#endif
+
+#ifdef ADD_I128
+# ifdef __SIZEOF_INT128__
+  (void)((__uint128_t(1) << 127) + (__uint128_t(1) << 127));
+# else
+  puts("__int128 not supported");
+# endif
+  // CHECK-ADD_I128: {{0x80000000000000000000000000000000 \+ 0x80000000000000000000000000000000 cannot be represented in type 'unsigned __int128'|__int128 not supported}}
+#endif
+}