Add test for UBSan trap frame recognizer

Author: anthonyhatran

lldb/test/Shell/Recognizer/Inputs/ubsan_add_overflow.cpp

@@ -0,0 +1,8 @@
+#include <limits.h>
+
+int main() {
+  volatile int a = INT_MAX;
+  volatile int b = 1;
+  volatile int c = a + b;
+  return c;
+}

lldb/test/Shell/Recognizer/ubsan_add_overflow.test

@@ -0,0 +1,17 @@
+# REQUIRES: clang
+
+# RUN: %clang_host -g -O0 %S/Inputs/ubsan_add_overflow.cpp -o %t.out \
+# RUN: -fsanitize=signed-integer-overflow -fsanitize-trap=signed-integer-overflow
+
+# RUN: %lldb -b -s %s %t.out | FileCheck %s
+
+run
+# CHECK: thread #{{.*}} stop reason = Undefined Behavior Sanitizer: Integer addition overflowed
+
+frame info
+# CHECK: frame #{{.*}}`main at ubsan_add_overflow.cpp
+
+frame recognizer info 0
+# CHECK: frame 0 is recognized by Verbose Trap StackFrame Recognizer
+
+quit